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Gaspar AS, Silva NA, Ferreira AM, Nunes RG. Repeatability of Open-MOLLI: An open-source inversion recovery myocardial T1 mapping sequence for fast prototyping. Magn Reson Med 2024; 92:741-750. [PMID: 38523462 DOI: 10.1002/mrm.30080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 01/27/2024] [Accepted: 02/20/2024] [Indexed: 03/26/2024]
Abstract
PURPOSE To develop an open-source prototype of myocardial T1 mapping (Open-MOLLI) to improve accessibility to cardiac T1 mapping and evaluate its repeatability. With Open-MOLLI, we aim to enable faster implementation and testing of sequence modifications and to facilitate inter-scanner and cross-vendor reproducibility studies. METHODS Open-MOLLI is an inversion-recovery sequence using a balanced SSFP (bSSFP) readout, with inversion and triggering schemes based on the 5(3)3 MOLLI sequence, developed in Pulseq. Open-MOLLI and MOLLI sequences were acquired in the ISMRM/NIST phantom and 21 healthy volunteers. In 18 of those subjects, Open-MOLLI and MOLLI were repeated in the same session (test-retest). RESULTS Phantom T1 values were comparable between methods, specifically for the vial with reference T1 value most similar to healthy myocardium T1 (T1vial3 = 1027 ms): T1MOLLI = 1011 ± 24 ms versus T1Open-MOLLI = 1009 ± 20 ms. In vivo T1 estimates were similar between Open-MOLLI and MOLLI (T1MOLLI = 1004 ± 33 ms vs. T1Open-MOLLI = 998 ± 52 ms), with a mean difference of -17 ms (p = 0.20), despite noisier Open-MOLLI weighted images and maps. Repeatability measures were slightly higher for Open-MOLLI (RCMOLLI = 3.0% vs. RCOpen-MOLLI = 4.4%). CONCLUSION The open-source sequence Open-MOLLI can be used for T1 mapping in vivo with similar mean T1 values to the MOLLI method. Open-MOLLI increases the accessibility to cardiac T1 mapping, providing also a base sequence to which further improvements can easily be added and tested.
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Affiliation(s)
- Andreia S Gaspar
- Instituto de Sistemas e Robótica-Lisboa and Departamento de Bioengenharia, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - Nuno A Silva
- Hospital da Luz Learning Health, Luz Saúde, Lisboa, Portugal
| | - António M Ferreira
- Serviço de Cardiologia, Hospital de Santa Cruz, Centro Hospitalar Lisboa Ocidental, Lisboa, Portugal
- Unidade de Imagiologia Cardíaca Avançada, Hospital da Luz, Lisboa, Portugal
| | - Rita G Nunes
- Instituto de Sistemas e Robótica-Lisboa and Departamento de Bioengenharia, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
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Gonçalves A, Moutinho E, Santos A, Teixeira T. Myocardial native T1 mapping at 3T cardiac magnetic resonance-closing the full-vendor reporting cycle of normal values. Clin Radiol 2024; 79:473-478. [PMID: 38582631 DOI: 10.1016/j.crad.2024.02.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 01/26/2024] [Accepted: 02/21/2024] [Indexed: 04/08/2024]
Abstract
AIM Cardiac magnetic resonance is currently an indispensable tool in the diagnosis of cardiac pathologies, with mapping techniques being one of the most recent advances in this area. T1 mapping is a robust tool that uses the T1 magnetic relaxation time as a quantitative marker of myocardial tissue composition. However, multiple T1 mapping sequences are used, and data comparing them, especially on different vendors, is limited. This study aims to determine the T1 relaxation values in the cardiac muscle of healthy individuals using GE's Discovery 3T scanner, allowing the use of the T1 mapping technique in patients on a sustained basis. MATERIAL AND METHODS Thirty-one healthy volunteers were submitted to T1 mapping at 3T magnetic resonance imaging (MRI) equipment, with 3 being excluded from the analysis (54% women; mean age: 39.2 ± 13.9 years). The MOLLI 5(3)3 sequence was used, acquiring one short axis slice at midventricular level. Native T1 values were presented as means (± standard deviation), and t-student independent samples tests evaluated gender differences in T1 values. RESULTS The results show an average global native T1 value of 1193 ± 39 ms, with women's values being statistically higher than men (1211 ± 40 vs 1173 ± 27 ms, respectively, p<0.006). Gender remained the only determinant of native T1 times on a multiple linear regression model that included age, ejection fraction, and T2 status. CONCLUSION This study has established one of the few native T1 values for a 3T GE Discovery scanner that are on par with those already reported by other vendors for a similar sequence, closing the circle in full-vendor reporting.
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Affiliation(s)
| | | | - A Santos
- Atrys Advanced Medical Centre, Portugal
| | - T Teixeira
- Atrys Advanced Medical Centre, Portugal.
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Peverill RE, Lin KY, Fogel MA, Cheung MMH, Moir WS, Corben LA, Cahoon G, Delatycki MB. Insights into the effects of Friedreich ataxia on the left ventricle using T1 mapping and late gadolinium enhancement. PLoS One 2024; 19:e0303969. [PMID: 38814901 PMCID: PMC11139319 DOI: 10.1371/journal.pone.0303969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Accepted: 05/04/2024] [Indexed: 06/01/2024] Open
Abstract
BACKGROUND The left ventricular (LV) changes which occur in Friedreich ataxia (FRDA) are incompletely understood. METHODS Cardiac magnetic resonance (CMR) imaging was performed using a 1.5T scanner in subjects with FRDA who are homozygous for an expansion of an intron 1 GAA repeat in the FXN gene. Standard measurements were performed of LV mass (LVM), LV end-diastolic volume (LVEDV) and LV ejection fraction (LVEF). Native T1 relaxation time and the extracellular volume fraction (ECV) were utilised as markers of left ventricular (LV) diffuse myocardial fibrosis and late gadolinium enhancement (LGE) was utilised as a marker of LV replacement fibrosis. FRDA genetic severity was assessed using the shorter FXN GAA repeat length (GAA1). RESULTS There were 93 subjects with FRDA (63 adults, 30 children, 54% males), 9 of whom had a reduced LVEF (<55%). A LVEDV below the normal range was present in 39%, a LVM above the normal range in 22%, and an increased LVM/LVEDV ratio in 89% subjects. In adults with a normal LVEF, there was an independent positive correlation of LVM with GAA1, and a negative correlation with age, but no similar relationships were seen in children. GAA1 was positively correlated with native T1 time in both adults and children, and with ECV in adults, all these associations independent of LVM and LVEDV. LGE was present in 21% of subjects, including both adults and children, and subjects with and without a reduced LVEF. None of GAA1, LVM or LVEDV were predictors of LGE. CONCLUSION An association between diffuse interstitial LV myocardial fibrosis and genetic severity in FRDA was present independently of FRDA-related LV structural changes. Localised replacement fibrosis was found in a minority of subjects with FRDA and was not associated with LV structural change or FRDA genetic severity in subjects with a normal LVEF.
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Affiliation(s)
- Roger E. Peverill
- Monash Cardiovascular Research Centre, MonashHeart and Department of Medicine (School of Clinical Sciences at Monash Health), Monash University and Monash Health, Clayton, Victoria, Australia
| | - Kimberly Y. Lin
- Division of Cardiology, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania, United States of America
| | - Mark A. Fogel
- Division of Cardiology, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania, United States of America
| | - Michael M. H. Cheung
- Department of Cardiology, Royal Children’s Hospital, Parkville, Victoria, Australia
- Department of Paediatrics, University of Melbourne, Parkville, Victoria, Australia
- Heart Research Group, Murdoch Children’s Research Institute, Parkville, Victoria, Australia
| | - W. Stuart Moir
- Monash Cardiovascular Research Centre, MonashHeart and Department of Medicine (School of Clinical Sciences at Monash Health), Monash University and Monash Health, Clayton, Victoria, Australia
| | - Louise A. Corben
- Bruce Lefroy Centre for Genetic Health Research, Murdoch Children’s Research Institute, Parkville, Victoria, Australia
| | - Glenn Cahoon
- Department of Cardiology, Royal Children’s Hospital, Parkville, Victoria, Australia
| | - Martin B. Delatycki
- Bruce Lefroy Centre for Genetic Health Research, Murdoch Children’s Research Institute, Parkville, Victoria, Australia
- Victorian Clinical Genetics Services, Parkville, Victoria, Australia
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Humayra S, Yahya N, Ning CJ, Mir IA, Mohamed AL, Manan HA. Systematic review of cardiovascular magnetic resonance imaging T1 and T2 mapping in patients with Takotsubo syndrome. Heliyon 2024; 10:e29755. [PMID: 38707280 PMCID: PMC11068528 DOI: 10.1016/j.heliyon.2024.e29755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 03/24/2024] [Accepted: 04/15/2024] [Indexed: 05/07/2024] Open
Abstract
Background Current imaging advancements quantify the use of cardiovascular magnetic resonance (CMR) derived T1 and T2 tissue characterization as robust indicators for cardiomyopathies, but limited literature exists on its clinical application in Takotsubo syndrome (TTS). This systematic review evaluated the T1 and T2 parametric mapping to delineate the current diagnostic and prognostic CMR imaging outcomes in TTS. Methods A comprehensive literature search until October 2023 was performed on ScienceDirect, PubMed, Web of Science, and Cochrane Library by two independent reviewers adhering to the PRISMA framework. The Newcastle-Ottawa Scale (NOS) was used to evaluate the methodological quality of studies. Results Out of 198 results, 8 studies were included in this qualitative synthesis, accounting for a total population of 399 subjects (TTS = 201, controls = 175, acute myocarditis = 14, and acute regional myocardial oedema without infarction = 9). Approximately 50.4 % were TTS patients aged between 61 and 73 years, whereof, females (n = 181, 90.0 %) and apical variants (n = 180, 89.6 %) were significantly higher, and emotional stressor (n = 42; 20.9 %) was more prevalent than physical (n = 27; 13.4 %). The NOS identified 62.5 % of studies as moderate and 37.5 % as high quality. Parametric tissue mapping revealed significantly prolonged T1 and T2 relaxation times at 1.5T and 3T respectively in TTS (1053-1164 msec, 1292-1438 msec; and 56-67 msec, 60-90 msec) with higher extracellular volume (ECV) fraction (29-36 %), compared to healthy subjects (944-1211 msec, 1189-1251 msec; and 46-54 msec, 32-68 msec; 23-29 %) and myocarditis (1058 msec, 60 msec). Other significant myocardial abnormalities included increased left ventricular (LV) end-systolic and diastolic volume and reduced global longitudinal strain. Overall, myocardial oedema, altered LV mass and strain, and worse LV systolic function, with higher native T1, T2, and ECV values were consistent. Conclusions Future research with substantially larger clinical trials is vital to explore the CMR imaging findings in diverse TTS patient cohorts and correlate the T1 and T2 mapping outcomes with demographic/clinical covariates. CMR is a valuable imaging tool for TTS diagnosis and prognostication. T1 and T2 parametric mapping facilitates the quantification of oedema, inflammation, and myocardial injury in Takotsubo.
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Affiliation(s)
- Syeda Humayra
- Makmal Pemprosesan Imej Kefungsian (Functional Image Processing Laboratory), Department of Radiology, University Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, 56000, Cheras, Kuala Lumpur, Malaysia
| | - Noorazrul Yahya
- Diagnostic Imaging & Radiotherapy Program, School of Diagnostic & Applied Health Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, 50300, Jalan Raja Muda Abdul Aziz, Kuala Lumpur, Malaysia
| | - Chai Jia Ning
- Makmal Pemprosesan Imej Kefungsian (Functional Image Processing Laboratory), Department of Radiology, University Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, 56000, Cheras, Kuala Lumpur, Malaysia
- Department of Radiology and Intervention, Hospital Pakar Kanak-Kanak (UKM Specialist Children's Hospital), Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, 56000, Kuala Lumpur, Malaysia
| | - Imtiyaz Ali Mir
- Department of Physiotherapy, M Kandiah Faculty of Medicine and Health Sciences, Universiti Tunku Abdul Rahman, Kajang, 43000, Selangor, Malaysia
- Faculty of Health Sciences, Lincoln University College, Petaling Jaya, 47301, Selangor, Malaysia
| | - Abdul Latiff Mohamed
- Faculty of Medicine, University of Cyberjaya, Persiaran Bestari, Cyber 11, 63000, Cyberjaya, Selangor, Malaysia
| | - Hanani Abdul Manan
- Makmal Pemprosesan Imej Kefungsian (Functional Image Processing Laboratory), Department of Radiology, University Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, 56000, Cheras, Kuala Lumpur, Malaysia
- Department of Radiology and Intervention, Hospital Pakar Kanak-Kanak (UKM Specialist Children's Hospital), Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, 56000, Kuala Lumpur, Malaysia
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Viezzer D, Hadler T, Gröschel J, Ammann C, Blaszczyk E, Kolbitsch C, Hufnagel S, Kranzusch-Groß R, Lange S, Schulz-Menger J. Post-hoc standardisation of parametric T1 maps in cardiovascular magnetic resonance imaging: a proof-of-concept. EBioMedicine 2024; 102:105055. [PMID: 38490103 PMCID: PMC10951905 DOI: 10.1016/j.ebiom.2024.105055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 02/28/2024] [Accepted: 02/28/2024] [Indexed: 03/17/2024] Open
Abstract
BACKGROUND In cardiovascular magnetic resonance imaging parametric T1 mapping lacks universally valid reference values. This limits its extensive use in the clinical routine. The aim of this work was the introduction of our self-developed Magnetic Resonance Imaging Software for Standardization (MARISSA) as a post-hoc standardisation approach. METHODS Our standardisation approach minimises the bias of confounding parameters (CPs) on the base of regression models. 214 healthy subjects with 814 parametric T1 maps were used for training those models on the CPs: age, gender, scanner and sequence. The training dataset included both sex, eleven different scanners and eight different sequences. The regression model type and four other adjustable standardisation parameters were optimised among 240 tested settings to achieve the lowest coefficient of variation, as measure for the inter-subject variability, in the mean T1 value across the healthy test datasets (HTE, N = 40, 156 T1 maps). The HTE were then compared to 135 patients with left ventricular hypertrophy including hypertrophic cardiomyopathy (HCM, N = 112, 121 T1 maps) and amyloidosis (AMY, N = 24, 24 T1 maps) after applying the best performing standardisation pipeline (BPSP) to evaluate the diagnostic accuracy. FINDINGS The BPSP reduced the COV of the HTE from 12.47% to 5.81%. Sensitivity and specificity reached 95.83% / 91.67% between HTE and AMY, 71.90% / 72.44% between HTE and HCM, and 87.50% / 98.35% between HCM and AMY. INTERPRETATION Regarding the BPSP, MARISSA enabled the comparability of T1 maps independently of CPs while keeping the discrimination of healthy and patient groups as found in literature. FUNDING This study was supported by the BMBF / DZHK.
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Affiliation(s)
- Darian Viezzer
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, ECRC Experimental and Clinical Research Center, Lindenberger Weg 80, 13125 Berlin, Germany; Working Group on Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center, A Joint Cooperation Between the Charité - Universitätsmedizin Berlin and the Max-Delbrück-Center for Molecular Medicine, Berlin, Germany; DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany.
| | - Thomas Hadler
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, ECRC Experimental and Clinical Research Center, Lindenberger Weg 80, 13125 Berlin, Germany; Working Group on Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center, A Joint Cooperation Between the Charité - Universitätsmedizin Berlin and the Max-Delbrück-Center for Molecular Medicine, Berlin, Germany; DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Jan Gröschel
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, ECRC Experimental and Clinical Research Center, Lindenberger Weg 80, 13125 Berlin, Germany; Working Group on Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center, A Joint Cooperation Between the Charité - Universitätsmedizin Berlin and the Max-Delbrück-Center for Molecular Medicine, Berlin, Germany; DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Clemens Ammann
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, ECRC Experimental and Clinical Research Center, Lindenberger Weg 80, 13125 Berlin, Germany; Working Group on Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center, A Joint Cooperation Between the Charité - Universitätsmedizin Berlin and the Max-Delbrück-Center for Molecular Medicine, Berlin, Germany; DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Edyta Blaszczyk
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, ECRC Experimental and Clinical Research Center, Lindenberger Weg 80, 13125 Berlin, Germany; Working Group on Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center, A Joint Cooperation Between the Charité - Universitätsmedizin Berlin and the Max-Delbrück-Center for Molecular Medicine, Berlin, Germany
| | - Christoph Kolbitsch
- Physikalisch-Technische Bundesanstalt (PTB), Braunschweig and Berlin, Germany
| | - Simone Hufnagel
- Physikalisch-Technische Bundesanstalt (PTB), Braunschweig and Berlin, Germany
| | - Riccardo Kranzusch-Groß
- Universitätsklinikum Schleswig-Holstein, Klinik für Radiologie und Nuklearmedizin, Lübeck, Germany
| | - Steffen Lange
- Hochschule Darmstadt (University of Applied Sciences), Faculty for Computer Sciences, Darmstadt, Germany
| | - Jeanette Schulz-Menger
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, ECRC Experimental and Clinical Research Center, Lindenberger Weg 80, 13125 Berlin, Germany; Working Group on Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center, A Joint Cooperation Between the Charité - Universitätsmedizin Berlin and the Max-Delbrück-Center for Molecular Medicine, Berlin, Germany; DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany; Helios Hospital Berlin-Buch, Department of Cardiology and Nephrology, Berlin, Germany
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Kennedy KG, Ghugre NR, Roifman I, Qi X, Saul K, McCrindle BW, Macgowan CK, MacIntosh BJ, Goldstein BI. Impaired coronary microvascular reactivity in youth with bipolar disorder. Psychol Med 2024; 54:1196-1206. [PMID: 37905407 DOI: 10.1017/s0033291723003021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
BACKGROUND Cardiovascular disease (CVD) is excessively prevalent and premature in bipolar disorder (BD), even after controlling for traditional cardiovascular risk factors. The increased risk of CVD in BD may be subserved by microvascular dysfunction. We examined coronary microvascular function in relation to youth BD. METHODS Participants were 86 youth, ages 13-20 years (n = 39 BD, n = 47 controls). Coronary microvascular reactivity (CMVR) was assessed using quantitative T2 magnetic resonance imaging during a validated breathing-paradigm. Quantitative T2 maps were acquired at baseline, following 60-s of hyperventilation, and every 10-s thereafter during a 40-s breath-hold. Left ventricular structure and function were evaluated based on 12-15 short- and long-axis cardiac-gated cine images. A linear mixed-effects model that controlled for age, sex, and body mass index assessed for between-group differences in CMVR (time-by-group interaction). RESULTS The breathing-paradigm induced a significant time-related increase in T2 relaxation time for all participants (i.e. CMVR; β = 0.36, p < 0.001). CMVR was significantly lower in BD v. controls (β = -0.11, p = 0.002). Post-hoc analyses found lower T2 relaxation time in BD youth after 20-, 30-, and 40 s of breath-holding (d = 0.48, d = 0.72, d = 0.91, respectively; all pFDR < 0.01). Gross left ventricular structure and function (e.g. mass, ejection fraction) were within normal ranges and did not differ between groups. CONCLUSION Youth with BD showed evidence of subclinically impaired coronary microvascular function, despite normal gross cardiac structure and function. These results converge with prior findings in adults with major depressive disorder and post-traumatic stress disorder. Future studies integrating larger samples, prospective follow-up, and blood-based biomarkers are warranted.
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Affiliation(s)
- Kody G Kennedy
- Centre for Youth Bipolar Disorder, Centre for Addiction and Mental Health, Toronto, ON, Canada
- Department of Pharmacology, University of Toronto, Toronto, ON, Canada
| | - Nilesh R Ghugre
- Schulich Heart Research Program, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
| | - Idan Roifman
- Schulich Heart Research Program, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - Xiuling Qi
- Schulich Heart Research Program, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - Kayla Saul
- Schulich Heart Research Program, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - Brian W McCrindle
- Division of Pediatric Cardiology, Hospital for Sick Children, Toronto, ON, Canada
- Department of Pediatrics, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Christopher K Macgowan
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
- Division of Translational Medicine, The Hospital for Sick Children, Toronto, ON, Canada
| | - Bradley J MacIntosh
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
- Hurvitz Brain Sciences, Sunnybrook Research Institute, Toronto, ON, Canada
- Computational Radiology & Artificial Intelligence (CRAI) unit, Department of Radiology and Nuclear Medicine, Oslo University Hospital, Oslo, Norway
| | - Benjamin I Goldstein
- Centre for Youth Bipolar Disorder, Centre for Addiction and Mental Health, Toronto, ON, Canada
- Department of Pharmacology, University of Toronto, Toronto, ON, Canada
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Thomas KE, Lukaschuk E, Shanmuganathan M, Kitt JA, Popescu IA, Neubauer S, Piechnik SK, Ferreira VM. Misclassification of females and males in cardiovascular magnetic resonance parametric mapping: the importance of sex-specific normal ranges for diagnosis of health vs. disease. Eur Heart J Cardiovasc Imaging 2024; 25:339-346. [PMID: 37788638 PMCID: PMC10883727 DOI: 10.1093/ehjci/jead247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/31/2023] [Accepted: 09/24/2023] [Indexed: 10/05/2023] Open
Abstract
AIMS Cardiovascular magnetic resonance parametric mapping enables non-invasive quantitative myocardial tissue characterization. Human myocardium has normal ranges of T1 and T2 values, deviation from which may indicate disease or change in physiology. Normal myocardial T1 and T2 values are affected by biological sex. Consequently, normal ranges created with insufficient numbers of each sex may result in sampling biases, misclassification of healthy values vs. disease, and even misdiagnoses. In this study, we investigated the impact of using male normal ranges for classifying female cases as normal or abnormal (and vice versa). METHODS AND RESULTS One hundred and forty-two healthy volunteers (male and female) were scanned on two Siemens 3T MR systems, providing averaged global myocardial T1 and T2 values on a per-subject basis. The Monte Carlo method was used to generate simulated normal ranges from these values to estimate the statistical accuracy of classifying healthy female or male cases correctly as 'normal' when using sex-specific vs. mixed-sex normal ranges. The normal male and female T1- and T2-mapping values were significantly different by sex, after adjusting for age and heart rate. CONCLUSION Using 15 healthy volunteers who are not sex specific to establish a normal range resulted in a typical misclassification of up to 36% of healthy females and 37% of healthy males as having abnormal T1 values and up to 16% of healthy females and 12% of healthy males as having abnormal T2 values. This paper highlights the potential adverse impact on diagnostic accuracy that can occur when local normal ranges contain insufficient numbers of both sexes. Sex-specific reference ranges should thus be routinely adopted in clinical practice.
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Affiliation(s)
- Katharine E Thomas
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, Oxford Centre for Clinical Magnetic Resonance Research (OCMR), University of Oxford, Level 0, John Radcliffe Hospital, Headley Way, Oxford OX3 9DU, UK
| | - Elena Lukaschuk
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, Oxford Centre for Clinical Magnetic Resonance Research (OCMR), University of Oxford, Level 0, John Radcliffe Hospital, Headley Way, Oxford OX3 9DU, UK
| | - Mayooran Shanmuganathan
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, Oxford Centre for Clinical Magnetic Resonance Research (OCMR), University of Oxford, Level 0, John Radcliffe Hospital, Headley Way, Oxford OX3 9DU, UK
| | - Jamie A Kitt
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, Oxford Centre for Clinical Magnetic Resonance Research (OCMR), University of Oxford, Level 0, John Radcliffe Hospital, Headley Way, Oxford OX3 9DU, UK
| | - Iulia A Popescu
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, Oxford Centre for Clinical Magnetic Resonance Research (OCMR), University of Oxford, Level 0, John Radcliffe Hospital, Headley Way, Oxford OX3 9DU, UK
| | - Stefan Neubauer
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, Oxford Centre for Clinical Magnetic Resonance Research (OCMR), University of Oxford, Level 0, John Radcliffe Hospital, Headley Way, Oxford OX3 9DU, UK
| | - Stefan K Piechnik
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, Oxford Centre for Clinical Magnetic Resonance Research (OCMR), University of Oxford, Level 0, John Radcliffe Hospital, Headley Way, Oxford OX3 9DU, UK
| | - Vanessa M Ferreira
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, Oxford Centre for Clinical Magnetic Resonance Research (OCMR), University of Oxford, Level 0, John Radcliffe Hospital, Headley Way, Oxford OX3 9DU, UK
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Dalmer A, Meinel FG, Böttcher B, Manzke M, Lorbeer R, Weber MA, Baeßler B, Klemenz AC. Native myocardial T1 mapping: influence of spatial resolution on quantitative results and reproducibility. Quant Imaging Med Surg 2024; 14:20-30. [PMID: 38223095 PMCID: PMC10784086 DOI: 10.21037/qims-23-943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 09/28/2023] [Indexed: 01/16/2024]
Abstract
Background Myocardial mapping techniques can be used to quantitatively assess alterations in myocardial tissue properties. This study aims to evaluate the influence of spatial resolution on quantitative results and reproducibility of native myocardial T1 mapping in cardiac magnetic resonance imaging (MRI). Methods In this cross-sectional study with prospective data collection between October 2019 and February 2020, 50 healthy adults underwent two identical cardiac MRI examinations in the radiology department on the same day. T1 mapping was performed using a MOLLI 5(3)3 sequence with higher (1.4 mm × 1.4 mm) and lower (1.9 mm × 1.9 mm) in-plane spatial resolution. Global quantitative results of T1 mapping were compared between high-resolution and low-resolution acquisitions using paired t-test. Intra-class correlation coefficient (ICC) and Bland-Altman statistics (absolute and percentage differences as means ± SD) were used for assessing test-retest reproducibility. Results There was no significant difference between global quantitative results acquired with high vs. low-resolution T1 mapping. The reproducibility of global T1 values was good for high-resolution (ICC: 0.88) and excellent for low-resolution T1 mapping (ICC: 0.95, P=0.003). In subgroup analyses, inferior test-retest reproducibility was observed for high spatial resolution in women compared to low spatial resolution (ICC: 0.71 vs. 0.91, P=0.001) and heart rates >77 bpm (ICC: 0.53 vs. 0.88, P=0.004). Apical segments had higher T1 values and variability compared to other segments. Regional T1 values for basal (ICC: 0.81 vs. 0.89, P=0.023) and apical slices (ICC: 0.86 vs. 0.92, P=0.024) showed significantly higher reproducibility in low-resolution compared to high-resolution acquisitions but without differences for midventricular slice (ICC: 0.91 vs. 0.92, P=0.402). Conclusions Based on our data, we recommend a spatial resolution on the order of 1.9 mm × 1.9 mm for native myocardial T1 mapping using a MOLLI 5(3)3 sequence at 1.5 T particularly in individuals with higher heart rates and women.
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Affiliation(s)
- Antonia Dalmer
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Centre Rostock, Rostock, Germany
| | - Felix G. Meinel
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Centre Rostock, Rostock, Germany
| | - Benjamin Böttcher
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Centre Rostock, Rostock, Germany
| | - Mathias Manzke
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Centre Rostock, Rostock, Germany
| | - Roberto Lorbeer
- Department of Radiology, Ludwig-Maximilian University, Munich, Germany
| | - Marc-André Weber
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Centre Rostock, Rostock, Germany
| | - Bettina Baeßler
- Institute of Diagnostic and Interventional Radiology, University Hospital Wuerzburg, Wuerzburg, Germany
| | - Ann-Christin Klemenz
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Centre Rostock, Rostock, Germany
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9
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Xu Z, Li W, Wang J, Wang F, Sun B, Xiang S, Luo X, Meng Y, Wang X, Wang X, Song J, Zhang M, Xu D, Zhou X, Ju Z, Sun J, Han Y, Chen Y. Reference ranges of myocardial T1 and T2 mapping in healthy Chinese adults: a multicenter 3T cardiovascular magnetic resonance study. J Cardiovasc Magn Reson 2023; 25:64. [PMID: 37968645 PMCID: PMC10652608 DOI: 10.1186/s12968-023-00974-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 10/20/2023] [Indexed: 11/17/2023] Open
Abstract
BACKGROUND Although reference ranges of T1 and T2 mapping are well established for cardiovascular magnetic resonance (CMR) at 1.5T, data for 3T are still lacking. The objective of this study is to establish reference ranges of myocardial T1 and T2 based on a large multicenter cohort of healthy Chinese adults at 3T CMR. METHODS A total of 1015 healthy Chinese adults (515 men, age range: 19-87 years) from 11 medical centers who underwent CMR using 3T Siemens scanners were prospectively enrolled. T1 mapping was performed with a motion-corrected modified Look-Locker inversion recovery sequence using a 5(3)3 scheme. T2 mapping images were acquired using T2-prepared fast low-angle shot sequence. T1 and T2 relaxation times were quantified for each slice and each myocardial segment. The T1 mapping and extracellular volume standardization (T1MES) phantom was used for quality assurance at each center prior to subject scanning. RESULTS The phantom analysis showed strong consistency of spin echo, T1 mapping, and T2 mapping among centers. In the entire cohort, global T1 and T2 reference values were 1193 ± 34 ms and 36 ± 2.5 ms. Global T1 and T2 values were higher in females than in males (T1: 1211 ± 29 ms vs. 1176 ± 30 ms, p < 0.001; T2: 37 ± 2.3 ms vs. 35 ± 2.5 ms, p < 0.001). There were statistical differences in global T2 across age groups (p < 0.001), but not in global T1. Linear regression showed no correlation between age and global T1 or T2 values. In males, positive correlation was found between heart rate and global T1 (r = 0.479, p < 0.001). CONCLUSIONS Using phantom-validated imaging sequences, we provide reference ranges for myocardial T1 and T2 values on 3T scanners in healthy Chinese adults, which can be applied across participating sites. Trial registration URL: http://www.chictr.org.cn/index.aspx . Unique identifier: ChiCTR1900025518. Registration name: 3T magnetic resonance myocardial quantitative imaging standardization and reference value study: a multi-center clinical study.
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Affiliation(s)
- Ziqian Xu
- Department of Cardiology, West China Hospital, Sichuan University, Guoxue Xiang No. 37, Guo Xue Road, Chengdu, 610041, Sichuan, People's Republic of China
- Department of Radiology, West China Hospital, Sichuan University, Guoxue Xiang No. 37, Chengdu, 610041, Sichuan, People's Republic of China
| | - Weihao Li
- Department of Cardiology, West China Hospital, Sichuan University, Guoxue Xiang No. 37, Guo Xue Road, Chengdu, 610041, Sichuan, People's Republic of China
| | - Jiaqi Wang
- Department of Cardiology, West China Hospital, Sichuan University, Guoxue Xiang No. 37, Guo Xue Road, Chengdu, 610041, Sichuan, People's Republic of China
| | - Fei Wang
- Department of Radiology, Anqing Municipal Hospital, Renmin Road No. 352, Yingjiang District, Anqing, 246003, Anhui, People's Republic of China
| | - Bin Sun
- Department of Radiology, Fujian Medical University Union Hospital, Xinquan Road No. 29, Fuzhou, 350001, Fujian, People's Republic of China
| | - Shifeng Xiang
- Department of Radiology, Handan Central Hospital, Cong Taipei Road No. 59, Handan, 056002, Hebei, People's Republic of China
| | - Xiao Luo
- Department of Radiology, Maanshan People's Hospital, Hubei Road No. 45, Huashan District, Maanshan, 243099, Anhui, People's Republic of China
| | - Yanfeng Meng
- Department of Radiology, Taiyuan Central Hospital, East Sandao Lane No. 5, Jiefang North Road, Xinghualing District, Taiyuan, 030009, Shanxi, People's Republic of China
| | - Xiang Wang
- Department of Radiology, Wuhan Central Hospital, Shengli Street No. 26, Jiangan District, Wuhan, 430014, Hubei, People's Republic of China
| | - Ximing Wang
- Department of Radiology, Shandong Provincial Hospital, Jingwuwei Seventh Road No. 324, Huaiyin District, Jinan, 250021, Shandong, People's Republic of China
| | - Jianxun Song
- Department of Radiology, Shenzhen Baoan People's Hospital, Longjing 2nd Road No. 118, Xinan Street, Baoan District, Shenzhen, 518101, Guangdong, People's Republic of China
| | - Min Zhang
- Department of Radiology, Beijing Hospital, Dongdan Dahua Road No. 1, Dongcheng District, Beijing, 100005, People's Republic of China
| | - Dinghu Xu
- Department of Radiology, Nanjing Jiangning Hospital, Hushan Road No. 169, Jiangning District, Nanjing, 211199, Jiangsu, People's Republic of China
| | - Xiaoyue Zhou
- MR Collaboration, Siemens Healthineers Ltd, Shanghai, People's Republic of China
| | - Zhiguo Ju
- College of Medical Imaging, Shanghai University of Medicine & Health Science, Shanghai, People's Republic of China
| | - Jiayu Sun
- Department of Radiology, West China Hospital, Sichuan University, Guoxue Xiang No. 37, Chengdu, 610041, Sichuan, People's Republic of China
| | - Yuchi Han
- Cardiovascular Division, The Ohio State Wexner Medical Center, Columbus, OH, USA
| | - Yucheng Chen
- Department of Cardiology, West China Hospital, Sichuan University, Guoxue Xiang No. 37, Guo Xue Road, Chengdu, 610041, Sichuan, People's Republic of China.
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10
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Gröschel J, Trauzeddel RF, Müller M, von Knobelsdorff-Brenkenhoff F, Viezzer D, Hadler T, Blaszczyk E, Daud E, Schulz-Menger J. Multi-site comparison of parametric T1 and T2 mapping: healthy travelling volunteers in the Berlin research network for cardiovascular magnetic resonance (BER-CMR). J Cardiovasc Magn Reson 2023; 25:47. [PMID: 37574535 PMCID: PMC10424349 DOI: 10.1186/s12968-023-00954-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 07/10/2023] [Indexed: 08/15/2023] Open
Abstract
BACKGROUND Parametric mapping sequences in cardiovascular magnetic resonance (CMR) allow for non-invasive myocardial tissue characterization. However quantitative myocardial mapping is still limited by the need for local reference values. Confounders, such as field strength, vendors and sequences, make intersite comparisons challenging. This exploratory study aims to assess whether multi-site studies that control confounding factors provide first insights whether parametric mapping values are within pre-defined tolerance ranges across scanners and sites. METHODS A cohort of 20 healthy travelling volunteers was prospectively scanned at three sites with a 3 T scanner from the same vendor using the same scanning protocol and acquisition scheme. A Modified Look-Locker inversion recovery sequence (MOLLI) for T1 and a fast low-angle shot sequence (FLASH) for T2 were used. At one site a scan-rescan was performed to assess the intra-scanner reproducibility. All acquired T1- and T2-mappings were analyzed in a core laboratory using the same post-processing approach and software. RESULTS After exclusion of one volunteer due to an accidentally diagnosed cardiac disease, T1- and T2-maps of 19 volunteers showed no significant differences between the 3 T sites (mean ± SD [95% confidence interval] for global T1 in ms: site I: 1207 ± 32 [1192-1222]; site II: 1207 ± 40 [1184-1225]; site III: 1219 ± 26 [1207-1232]; p = 0.067; for global T2 in ms: site I: 40 ± 2 [39-41]; site II: 40 ± 1 [39-41]; site III 39 ± 2 [39-41]; p = 0.543). CONCLUSION Parametric mapping results displayed initial hints at a sufficient similarity between sites when confounders, such as field strength, vendor diversity, acquisition schemes and post-processing analysis are harmonized. This finding needs to be confirmed in a powered clinical trial. Trial registration ISRCTN14627679 (retrospectively registered).
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Affiliation(s)
- Jan Gröschel
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, ECRC Experimental and Clinical Research Center, Lindenberger Weg 80, 13125, Berlin, Germany
- Working Group On Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center, a joint cooperation between Charité Medical Faculty and the Max-Delbrück Center for Molecular Medicine, Lindenberger Weg 80, 13125, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Ralf-Felix Trauzeddel
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, ECRC Experimental and Clinical Research Center, Lindenberger Weg 80, 13125, Berlin, Germany
- Working Group On Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center, a joint cooperation between Charité Medical Faculty and the Max-Delbrück Center for Molecular Medicine, Lindenberger Weg 80, 13125, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
- Department of Anaesthesiology and Intensive Care Medicine, Campus Benjamin Franklin, Charité, Universitätsmedizin Berlin, corporate member of Freie Universität Berlin Und Humboldt-Universität Zu Berlin, Berlin, Germany
| | - Maximilian Müller
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, ECRC Experimental and Clinical Research Center, Lindenberger Weg 80, 13125, Berlin, Germany
- Working Group On Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center, a joint cooperation between Charité Medical Faculty and the Max-Delbrück Center for Molecular Medicine, Lindenberger Weg 80, 13125, Berlin, Germany
| | - Florian von Knobelsdorff-Brenkenhoff
- Working Group On Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center, a joint cooperation between Charité Medical Faculty and the Max-Delbrück Center for Molecular Medicine, Lindenberger Weg 80, 13125, Berlin, Germany
- KIZ, Kardiologie im Zentrum, Eisenmannstr. 4, 80331, Munich, Deutschland
| | - Darian Viezzer
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, ECRC Experimental and Clinical Research Center, Lindenberger Weg 80, 13125, Berlin, Germany
- Working Group On Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center, a joint cooperation between Charité Medical Faculty and the Max-Delbrück Center for Molecular Medicine, Lindenberger Weg 80, 13125, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Thomas Hadler
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, ECRC Experimental and Clinical Research Center, Lindenberger Weg 80, 13125, Berlin, Germany
- Working Group On Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center, a joint cooperation between Charité Medical Faculty and the Max-Delbrück Center for Molecular Medicine, Lindenberger Weg 80, 13125, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Edyta Blaszczyk
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, ECRC Experimental and Clinical Research Center, Lindenberger Weg 80, 13125, Berlin, Germany
- Working Group On Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center, a joint cooperation between Charité Medical Faculty and the Max-Delbrück Center for Molecular Medicine, Lindenberger Weg 80, 13125, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Elias Daud
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, ECRC Experimental and Clinical Research Center, Lindenberger Weg 80, 13125, Berlin, Germany
- Working Group On Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center, a joint cooperation between Charité Medical Faculty and the Max-Delbrück Center for Molecular Medicine, Lindenberger Weg 80, 13125, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
- The Cardiology Department, Galilee Medical Center, Azrieli Faculty of Medicine Bar-Ilan University, Nahariya, Safed, Israel
| | - Jeanette Schulz-Menger
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, ECRC Experimental and Clinical Research Center, Lindenberger Weg 80, 13125, Berlin, Germany.
- Working Group On Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center, a joint cooperation between Charité Medical Faculty and the Max-Delbrück Center for Molecular Medicine, Lindenberger Weg 80, 13125, Berlin, Germany.
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany.
- Department of Cardiology and Nephrology, HELIOS Hospital Berlin-Buch, Berlin, Germany.
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11
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Telle Å, Bargellini C, Chahine Y, Del Álamo JC, Akoum N, Boyle PM. Personalized biomechanical insights in atrial fibrillation: opportunities & challenges. Expert Rev Cardiovasc Ther 2023; 21:817-837. [PMID: 37878350 PMCID: PMC10841537 DOI: 10.1080/14779072.2023.2273896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 10/18/2023] [Indexed: 10/26/2023]
Abstract
INTRODUCTION Atrial fibrillation (AF) is an increasingly prevalent and significant worldwide health problem. Manifested as an irregular atrial electrophysiological activation, it is associated with many serious health complications. AF affects the biomechanical function of the heart as contraction follows the electrical activation, subsequently leading to reduced blood flow. The underlying mechanisms behind AF are not fully understood, but it is known that AF is highly correlated with the presence of atrial fibrosis, and with a manifold increase in risk of stroke. AREAS COVERED In this review, we focus on biomechanical aspects in atrial fibrillation, current and emerging use of clinical images, and personalized computational models. We also discuss how these can be used to provide patient-specific care. EXPERT OPINION Understanding the connection betweenatrial fibrillation and atrial remodeling might lead to valuable understanding of stroke and heart failure pathophysiology. Established and emerging imaging modalities can bring us closer to this understanding, especially with continued advancements in processing accuracy, reproducibility, and clinical relevance of the associated technologies. Computational models of cardiac electromechanics can be used to glean additional insights on the roles of AF and remodeling in heart function.
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Affiliation(s)
- Åshild Telle
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - Clarissa Bargellini
- Department of Mechanical Engineering, University of Washington, Seattle, WA, USA
| | - Yaacoub Chahine
- Division of Cardiology, University of Washington, Seattle, WA, USA
| | - Juan C Del Álamo
- Department of Mechanical Engineering, University of Washington, Seattle, WA, USA
- Center for Cardiovascular Biology, University of Washington, Seattle, WA, USA
| | - Nazem Akoum
- Department of Bioengineering, University of Washington, Seattle, WA, USA
- Division of Cardiology, University of Washington, Seattle, WA, USA
| | - Patrick M Boyle
- Department of Bioengineering, University of Washington, Seattle, WA, USA
- Center for Cardiovascular Biology, University of Washington, Seattle, WA, USA
- Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA, USA
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12
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Bustin A, Witschey WRT, van Heeswijk RB, Cochet H, Stuber M. Magnetic resonance myocardial T1ρ mapping : Technical overview, challenges, emerging developments, and clinical applications. J Cardiovasc Magn Reson 2023; 25:34. [PMID: 37331930 DOI: 10.1186/s12968-023-00940-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 05/15/2023] [Indexed: 06/20/2023] Open
Abstract
The potential of cardiac magnetic resonance to improve cardiovascular care and patient management is considerable. Myocardial T1-rho (T1ρ) mapping, in particular, has emerged as a promising biomarker for quantifying myocardial injuries without exogenous contrast agents. Its potential as a contrast-agent-free ("needle-free") and cost-effective diagnostic marker promises high impact both in terms of clinical outcomes and patient comfort. However, myocardial T1ρ mapping is still at a nascent stage of development and the evidence supporting its diagnostic performance and clinical effectiveness is scant, though likely to change with technological improvements. The present review aims at providing a primer on the essentials of myocardial T1ρ mapping, and to describe the current range of clinical applications of the technique to detect and quantify myocardial injuries. We also delineate the important limitations and challenges for clinical deployment, including the urgent need for standardization, the evaluation of bias, and the critical importance of clinical testing. We conclude by outlining technical developments to be expected in the future. If needle-free myocardial T1ρ mapping is shown to improve patient diagnosis and prognosis, and can be effectively integrated in cardiovascular practice, it will fulfill its potential as an essential component of a cardiac magnetic resonance examination.
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Affiliation(s)
- Aurelien Bustin
- IHU LIRYC, Electrophysiology and Heart Modeling Institute, Université de Bordeaux, INSERM, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, Avenue du Haut Lévêque, 33604, Pessac, France.
- Department of Cardiovascular Imaging, Hôpital Cardiologique du Haut-Lévêque, CHU de Bordeaux, Avenue de Magellan, 33604, Pessac, France.
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.
| | | | - Ruud B van Heeswijk
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Hubert Cochet
- IHU LIRYC, Electrophysiology and Heart Modeling Institute, Université de Bordeaux, INSERM, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, Avenue du Haut Lévêque, 33604, Pessac, France
- Department of Cardiovascular Imaging, Hôpital Cardiologique du Haut-Lévêque, CHU de Bordeaux, Avenue de Magellan, 33604, Pessac, France
| | - Matthias Stuber
- IHU LIRYC, Electrophysiology and Heart Modeling Institute, Université de Bordeaux, INSERM, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, Avenue du Haut Lévêque, 33604, Pessac, France
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
- Center for Biomedical Imaging (CIBM), Lausanne, Switzerland
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13
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Topriceanu CC, Fornasiero M, Seo H, Webber M, Keenan KE, Stupic KF, Bruehl R, Ittermann B, Price K, McGrath L, Pang W, Hughes AD, Nezafat R, Kellman P, Pierce I, Moon JC, Captur G. Developing a medical device-grade T 2 phantom optimized for myocardial T 2 mapping by cardiovascular magnetic resonance. J Cardiovasc Magn Reson 2023; 25:19. [PMID: 36935515 PMCID: PMC10026458 DOI: 10.1186/s12968-023-00926-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 01/26/2023] [Indexed: 03/21/2023] Open
Abstract
INTRODUCTION A long T2 relaxation time can reflect oedema, and myocardial inflammation when combined with increased plasma troponin levels. Cardiovascular magnetic resonance (CMR) T2 mapping therefore has potential to provide a key diagnostic and prognostic biomarkers. However, T2 varies by scanner, software, and sequence, highlighting the need for standardization and for a quality assurance system for T2 mapping in CMR. AIM To fabricate and assess a phantom dedicated to the quality assurance of T2 mapping in CMR. METHOD A T2 mapping phantom was manufactured to contain 9 T1 and T2 (T1|T2) tubes to mimic clinically relevant native and post-contrast T2 in myocardium across the health to inflammation spectrum (i.e., 43-74 ms) and across both field strengths (1.5 and 3 T). We evaluated the phantom's structural integrity, B0 and B1 uniformity using field maps, and temperature dependence. Baseline reference T1|T2 were measured using inversion recovery gradient echo and single-echo spin echo (SE) sequences respectively, both with long repetition times (10 s). Long-term reproducibility of T1|T2 was determined by repeated T1|T2 mapping of the phantom at baseline and at 12 months. RESULTS The phantom embodies 9 internal agarose-containing T1|T2 tubes doped with nickel di-chloride (NiCl2) as the paramagnetic relaxation modifier to cover the clinically relevant spectrum of myocardial T2. The tubes are surrounded by an agarose-gel matrix which is doped with NiCl2 and packed with high-density polyethylene (HDPE) beads. All tubes at both field strengths, showed measurement errors up to ≤ 7.2 ms [< 14.7%] for estimated T2 by balanced steady-state free precession T2 mapping compared to reference SE T2 with the exception of the post-contrast tube of ultra-low T1 where the deviance was up to 16 ms [40.0%]. At 12 months, the phantom remained free of air bubbles, susceptibility, and off-resonance artifacts. The inclusion of HDPE beads effectively flattened the B0 and B1 magnetic fields in the imaged slice. Independent temperature dependency experiments over the 13-38 °C range confirmed the greater stability of shorter vs longer T1|T2 tubes. Excellent long-term (12-month) reproducibility of measured T1|T2 was demonstrated across both field strengths (all coefficients of variation < 1.38%). CONCLUSION The T2 mapping phantom demonstrates excellent structural integrity, B0 and B1 uniformity, and reproducibility of its internal tube T1|T2 out to 1 year. This device may now be mass-produced to support the quality assurance of T2 mapping in CMR.
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Affiliation(s)
- Constantin-Cristian Topriceanu
- Barts Heart Center, Barts Health NHS Trust, West Smithfield, London, ECIA 7BE, UK
- Institute of Cardiovascular Science, University College London, Huntley Street, London, WC1E 6DD, UK
- Medical Research Council Unit for Lifelong Health and Ageing at UCL, 1-19 Torrington Place, London, WC1E 7HB, UK
| | | | - Han Seo
- Department of Cardiology, Center for Inherited Heart Muscle Conditions, Royal Free London NHS Foundation Trust, Pond Street, London, NW3 2QG, UK
| | - Matthew Webber
- Barts Heart Center, Barts Health NHS Trust, West Smithfield, London, ECIA 7BE, UK
- Institute of Cardiovascular Science, University College London, Huntley Street, London, WC1E 6DD, UK
- Department of Cardiology, Center for Inherited Heart Muscle Conditions, Royal Free London NHS Foundation Trust, Pond Street, London, NW3 2QG, UK
- Medical Research Council Unit for Lifelong Health and Ageing at UCL, 1-19 Torrington Place, London, WC1E 7HB, UK
| | - Kathryn E Keenan
- National Institute of Standards and Technology (NIST), 325 Broadway, Boulder, CO, 80305, USA
| | - Karl F Stupic
- National Institute of Standards and Technology (NIST), 325 Broadway, Boulder, CO, 80305, USA
| | - Rüdiger Bruehl
- Physikalisch-Technische Bundesanstalt (PTB), Abbestraße 2-12, 10587, Berlin, Germany
| | - Bernd Ittermann
- Physikalisch-Technische Bundesanstalt (PTB), Abbestraße 2-12, 10587, Berlin, Germany
| | - Kirsty Price
- UCL Bloomsbury Center for Clinical Phenotyping, London, WC1E 6HX, UK
| | - Louise McGrath
- UCL Bloomsbury Center for Clinical Phenotyping, London, WC1E 6HX, UK
| | - Wenjie Pang
- Resonance Health (RH), 141 Burswood Road, Burswood, WA, 6100, Australia
| | - Alun D Hughes
- Institute of Cardiovascular Science, University College London, Huntley Street, London, WC1E 6DD, UK
- Medical Research Council Unit for Lifelong Health and Ageing at UCL, 1-19 Torrington Place, London, WC1E 7HB, UK
| | - Reza Nezafat
- Department of Medicine (Cardiovascular Division), Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Ave, Boston, MA, 02215, USA
| | - Peter Kellman
- National Heart, Lung and Blood Institute, National Institutes of Health (NIH), Rockville Pike, Bethesda, MD, 20892, USA
| | - Iain Pierce
- Barts Heart Center, Barts Health NHS Trust, West Smithfield, London, ECIA 7BE, UK
- Institute of Cardiovascular Science, University College London, Huntley Street, London, WC1E 6DD, UK
| | - James C Moon
- Barts Heart Center, Barts Health NHS Trust, West Smithfield, London, ECIA 7BE, UK
- Institute of Cardiovascular Science, University College London, Huntley Street, London, WC1E 6DD, UK
| | - Gabriella Captur
- Institute of Cardiovascular Science, University College London, Huntley Street, London, WC1E 6DD, UK.
- Department of Cardiology, Center for Inherited Heart Muscle Conditions, Royal Free London NHS Foundation Trust, Pond Street, London, NW3 2QG, UK.
- Medical Research Council Unit for Lifelong Health and Ageing at UCL, 1-19 Torrington Place, London, WC1E 7HB, UK.
- Institute of Cardiovascular Science, Consultant Cardiologist in Inherited Heart Muscle Conditions, University College London, Gower Street, London, WC1E 6BT, UK.
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Amirrajab S, Khalil YA, Lorenz C, Weese J, Pluim J, Breeuwer M. A Framework for Simulating Cardiac MR Images With Varying Anatomy and Contrast. IEEE TRANSACTIONS ON MEDICAL IMAGING 2023; 42:726-738. [PMID: 36260571 DOI: 10.1109/tmi.2022.3215798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
One of the limiting factors for the development and adoption of novel deep-learning (DL) based medical image analysis methods is the scarcity of labeled medical images. Medical image simulation and synthesis can provide solutions by generating ample training data with corresponding ground truth labels. Despite recent advances, generated images demonstrate limited realism and diversity. In this work, we develop a flexible framework for simulating cardiac magnetic resonance (MR) images with variable anatomical and imaging characteristics for the purpose of creating a diversified virtual population. We advance previous works on both cardiac MR image simulation and anatomical modeling to increase the realism in terms of both image appearance and underlying anatomy. To diversify the generated images, we define parameters: 1)to alter the anatomy, 2) to assign MR tissue properties to various tissue types, and 3) to manipulate the image contrast via acquisition parameters. The proposed framework is optimized to generate a substantial number of cardiac MR images with ground truth labels suitable for downstream supervised tasks. A database of virtual subjects is simulated and its usefulness for aiding a DL segmentation method is evaluated. Our experiments show that training completely with simulated images can perform comparable with a model trained with real images for heart cavity segmentation in mid-ventricular slices. Moreover, such data can be used in addition to classical augmentation for boosting the performance when training data is limited, particularly by increasing the contrast and anatomical variation, leading to better regularization and generalization. The database is publicly available at https://osf.io/bkzhm/ and the simulation code will be available at https://github.com/sinaamirrajab/CMRI.
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15
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Cardiac inflammation and fibrosis patterns in systemic sclerosis, evaluated by magnetic resonance imaging: An update. Semin Arthritis Rheum 2023; 58:152126. [PMID: 36434895 DOI: 10.1016/j.semarthrit.2022.152126] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 10/18/2022] [Accepted: 10/24/2022] [Indexed: 11/19/2022]
Abstract
Systemic sclerosis (SSc) presents high morbidity/mortality, due to internal organ fibrosis, including the heart. Cardiac magnetic resonance (CMR) can perform myocardial function and tissue characterization in the same examination. The Lake Louise criteria (LLC) can identify recent myocardial inflammation using CMR. Abnormal values include: (a) myocardial over skeletal muscle ratio in STIRT2-W images >2, (b) early gadolinium enhancement values >4, (c) epicardial/intramyocardial late gadolinium enhancement (LGE). The diagnosis of myocarditis using LLC is considered if 2/3 criteria are positive. Parametric imaging including T2, native T1 mapping and extracellular volume fraction (ECV) has been recently used to diagnose inflammatory cardiomyopathy. According to expert recommendations, myocarditis should be considered if at least 2 indices, one T2 and one T1 parameter are positive, whereas native T1 mapping and ECV assess diffuse fibrosis or oedema, even in the absence of LGE. Moreover, transmural/subendocardial fibrosis following the distribution of coronary arteries and diffuse subendocardial fibrosis not related with epicardial coronary arteries are indicative of epicardial and micro-vascular coronary artery disease, respectively. To conclude, CMR can identify acute/active myocardial inflammation and myocardial infarction using classic and parametric indices in parallel with ventricular function evaluation.
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16
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Kositanurit W, Theerasuwipakorn N, Vorasettakarnkij Y, Ponkanist K, Lerdkhonsan C, Tumkosit M, Wendell DC, Chattranukulchai P. Reference values of myocardial native T1 and extracellular volume in patients without structural heart disease and had negative 3T cardiac magnetic resonance adenosine stress test. INTERNATIONAL JOURNAL OF CARDIOLOGY. HEART & VASCULATURE 2023; 45:101181. [PMID: 36793331 PMCID: PMC9923153 DOI: 10.1016/j.ijcha.2023.101181] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 01/19/2023] [Accepted: 01/24/2023] [Indexed: 01/31/2023]
Abstract
Background To establish the reference values of native T1 and extracellular volume (ECV) in patients without structural heart disease and had a negative adenosine stress 3T cardiac magnetic resonance. Methods Short-axis T1 mapping images were acquired using a modified Look-Locker inversion recovery technique before and after administration of 0.15 mmol/kg gadobutrol to calculate both native T1 and ECV. To compare the agreement between measurement strategies, regions of interest (ROI) were drawn in all 16 segments then averaged to represent mean global native T1. Additionally, an ROI was drawn in the mid-ventricular septum on the same image to represent the mid-ventricular septal native T1. Results Fifty-one patients (mean 65 years, 65 % women) were included. Mean global native T1 averaged from all 16 segments and a mid-ventricular septal native T1 were not significantly different (1221.2 ± 35.2 vs 1228.4 ± 43.7 ms, p = 0.21). Men had lower mean global native T1 (1195 ± 29.8 vs 1235.5 ± 29.4 ms, p < 0.001) than women. Both mean global and mid-ventricular septal native T1 were not correlated with age (r = 0.21, p = 0.13 and r = 0.18, p = 0.19, respectively). The calculated ECV was 26.6 ± 2.7 %, which was not influenced by either gender or age. Conclusions We report the first study to validate the native T1 and ECV reference ranges, factors influencing T1, and the validation across measurement methods in older Asian patients without structural heart disease and had a negative adenosine stress test. These references allow for better detection of abnormal myocardial tissue characteristics in clinical practice.
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Affiliation(s)
- Weerapat Kositanurit
- Department of Physiology, Faculty of Medicine, Chulalongkorn University, King Chulalongkorn Memorial Hospital, Bangkok 10330, Thailand
| | - Nonthikorn Theerasuwipakorn
- Division of Cardiovascular Medicine, Faculty of Medicine, Chulalongkorn University, Cardiac Center, King Chulalongkorn Memorial Hospital, Bangkok 10330, Thailand
| | - Yongkasem Vorasettakarnkij
- Division of Hospital and Ambulatory Medicine, Faculty of Medicine, Chulalongkorn University, King Chulalongkorn Memorial Hospital, Bangkok 10330, Thailand
| | - Kanokvalee Ponkanist
- Department of Radiology, Faculty of Medicine, Chulalongkorn University, King Chulalongkorn Memorial Hospital, Bangkok 10330, Thailand
| | - Chonthicha Lerdkhonsan
- Department of Radiology, Faculty of Medicine, Chulalongkorn University, King Chulalongkorn Memorial Hospital, Bangkok 10330, Thailand
| | - Monravee Tumkosit
- Department of Radiology, Faculty of Medicine, Chulalongkorn University, King Chulalongkorn Memorial Hospital, Bangkok 10330, Thailand
| | - David C. Wendell
- Duke Cardiovascular Magnetic Resonance Center, Division of Cardiology, Duke University Medical Center, Durham, NC 27708, USA
| | - Pairoj Chattranukulchai
- Division of Cardiovascular Medicine, Faculty of Medicine, Chulalongkorn University, Cardiac Center, King Chulalongkorn Memorial Hospital, Bangkok 10330, Thailand
- Corresponding author at: Division of Cardiovascular Medicine, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Cardiac Center, King Chulalongkorn Memorial Hospital, 1873 Rama IV Road, Pathumwan, Bangkok 10330, Thailand.
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Cardiovascular magnetic resonance for the evaluation of patients with cardiovascular disease: An overview of current indications, limitations, and procedures. Hellenic J Cardiol 2023; 70:53-64. [PMID: 36706867 DOI: 10.1016/j.hjc.2023.01.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 01/05/2023] [Accepted: 01/12/2023] [Indexed: 01/25/2023] Open
Abstract
Cardiovascular disease (CVD) is the most common cause of morbidity/mortality worldwide. Early diagnosis is the key to improve CVD prognosis, and cardiovascular imaging plays a crucial role in this direction. Echocardiography is the most commonly used imaging modality. However, the need for early diagnosis/treatment favors the development of modalities providing information about tissue characterization beyond echocardiography. In this context, the rapid evolution of cardiovascular magnetic resonance (CMR) led to the coexistence of cardiologists and radiologists in the CMR field. Our aim was to provide an overview of indications, sequences, and reporting of CMR findings in various CVDs. The indications/limitations of CMR as well as the pathophysiological significance of various sequences in adult/pediatric CVDs are presented and discussed in detail. The role of CMR indices in the evaluation of the most common clinical scenarios in cardiology and their impact on CVD diagnosis/prognosis were analyzed in detail. Additionally, the comparison of CMR versus other imaging modalities is also discussed. Finally, future research directions are presented. CMR can provide cardiac tissue characterization and biventricular/biatrial functional assessment in the same examination, allowing for early and accurate identification of important subclinical abnormalities, before clinically overt CVD takes place.
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18
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Yamagata K, Yamagata LM, Abela M, Portanier Mifsud C, Micallef LA, Reichmuth L, Borg A. Native T1 and T2 reference values for maltese healthy cohort. Int J Cardiovasc Imaging 2023; 39:153-159. [PMID: 36598695 DOI: 10.1007/s10554-022-02709-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 08/05/2022] [Indexed: 01/07/2023]
Abstract
Cardiac Magnetic Resonance (CMR) is increasingly being used for diagnosing various cardiac conditions. Parametric mapping enables quantitative myocardial characterization by directly measuring myocardial T1 and T2 values. However, reference values of parametric mapping are not standardized across different vendors and scanners, causing drawbacks for clinical implementation of this technique across different sites. We assessed the reference ranges of native T1 and T2 values in a healthy Maltese cohort to establish a local parametric mapping service. Healthy subjects [n = 51; mean age 36.0 (range 19-59) years] with normal cardiac function on CMR were recruited. Subjects underwent uniform parametric mapping pulse sequences [MOLLI 5b(3b)3b for native T1 mapping, and gradient echo single shot FLASH readout for T2 mapping] on a 3 T Siemens MAGNETOM Vida scanner. Native T1 and T2 values were measured by placing a region of interest within the interventricular septum at midventricular level. Intra- and inter-observer variability were assessed using Bland-Altman plots. Mean ± 1.96 SD was used as a reference range. Mean native T1 and T2 values were 1200.1 ± 30.7 ms and 39.5 ± 1.8 ms, respectively. There was no significant bias in repeated measurements by the same and different observers. For the first time in Malta, we established the native T1 and T2 parametric mapping reference values for healthy Caucasian Maltese individuals. This will assist cardiologists to establish diagnosis, disease progression, and response to treatment of various myocardial diseases locally.
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Affiliation(s)
- Kentaro Yamagata
- Department of Cardiology, Mater Dei Hospital, Triq Dun Karm, Cardiac Medical Ward, L-Imsida, MSD2090, Malta.
| | - Lara Marie Yamagata
- Department of Cardiology, Mater Dei Hospital, Triq Dun Karm, Cardiac Medical Ward, L-Imsida, MSD2090, Malta
| | - Mark Abela
- Department of Cardiology, Mater Dei Hospital, Triq Dun Karm, Cardiac Medical Ward, L-Imsida, MSD2090, Malta
| | | | | | - Luise Reichmuth
- Department of Radiology, Mater Dei Hospital, L-Imsida, Malta
| | - Alexander Borg
- Department of Cardiology, Mater Dei Hospital, Triq Dun Karm, Cardiac Medical Ward, L-Imsida, MSD2090, Malta
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19
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Micek M, Aebisher D, Surówka J, Bartusik-Aebisher D, Madera M. Applications of T 1 and T 2 relaxation time calculation in tissue differentiation and cancer diagnostics-a systematic literature review. Front Oncol 2022; 12:1010643. [PMID: 36531030 PMCID: PMC9749890 DOI: 10.3389/fonc.2022.1010643] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 10/31/2022] [Indexed: 01/07/2024] Open
Abstract
INTRODUCTION The purpose of this review was to summarize current applications of non-contrast-enhanced quantitative magnetic resonance imaging (qMRI) in tissue differentiation, considering healthy tissues as well as comparisons of malignant and benign samples. The analysis concentrates mainly on the epithelium and epithelial breast tissue, especially breast cancer. METHODS A systematic review has been performed based on current recommendations by publishers and foundations. An exhaustive overview of currently used techniques and their potential in medical sciences was obtained by creating a search strategy and explicit inclusion and exclusion criteria. RESULTS AND DISCUSSION PubMed and Elsevier (Scopus & Science Direct) search was narrowed down to studies reporting T1 or T2 values of human tissues, resulting in 404 initial candidates, out of which roughly 20% were found relevant and fitting the review criteria. The nervous system, especially the brain, and connective tissue such as cartilage were the most frequently analyzed, while the breast remained one of the most uncommon subjects of studies. There was little agreement between published T1 or T2 values, and methodologies and experimental setups differed strongly. Few contemporary (after 2000) resources have been identified that were dedicated to studying the relaxation times of tissues and their diagnostic applications. Most publications concentrate on recommended diagnostic standards, for example, breast acquisition of T1- or T2-weighted images using gadolinium-based contrast agents. Not enough data is available yet to decide how repeatable or reliable analysis of relaxation times is in diagnostics, so it remains mainly a research topic. So far, qMRI might be recommended as a diagnostic help providing general insight into the nature of lesions (benign vs. malignant). However, additional means are generally necessary to differentiate between specific lesion types.
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Affiliation(s)
| | - David Aebisher
- Department of Photomedicine and Physical Chemistry, Medical College of The University of Rzeszow, Rzeszow, Poland
| | | | - Dorota Bartusik-Aebisher
- Department of Biochemistry and General Chemistry, Medical College of The University of Rzeszow, Rzeszow, Poland
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20
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Shaw M, Ojha V, Ganga KP, Malhi AS, Chandrashekhara SH, Kumar S, Khan MA, Jagia P, Sharma S. Reference values of myocardial native T1 and T2 mapping values in normal Indian population at 1.5 Tesla scanner. THE INTERNATIONAL JOURNAL OF CARDIOVASCULAR IMAGING 2022; 38:2403-2411. [PMID: 36434341 DOI: 10.1007/s10554-022-02648-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Accepted: 05/09/2022] [Indexed: 11/30/2022]
Abstract
T1 and T2 mapping techniques on cardiovascular magnetic resonance (CMR) provide insights into the myocardial tissue characterisation. We sought to establish the normal reference values of native T1 and T2 mapping in Indian population which can be used subsequently in clinical practice for addressing various cardiac pathologies. This prospective study included consecutive healthy volunteers (18-60 years) who underwent CMR on a 1.5 Tesla scanner using standard protocol. T1 mapping sequence was performed using MOLLI sequence with two different flip angles (FA) (35° and 50°). T2 mapping was performed using a hybrid gradient and spin-echo sequence sequence with two different FA (70° and 12°). Images were analysed with ROIs drawn in all the 16 AHA myocardial segments. 50 volunteers (average age-34 years, males-72%) were included. All the scans were normal. The mean T1 value at 35-degree FA was 946.86 + 14.16 ms and at 50-degree FA was 941.60 + 11.89 ms. The mean T2 mapping value at 70-degree FA was 45.67 + 1.39 ms and at 12-degree FA was 45.61 + 1.47 ms. The mapping values were not statistically different between males and females (all p > 0.2). The T1 and T2 mapping values did not show any significant correlation with LVEF, age, BMI or heart rate (all r < 0.33). The T1 mapping values significantly differ at 35- and 50-degree FAs (p = 0.002). The results establish the normal reference T1 and T2 mapping value for Indian population in institutes using the same protocol and parameters at 1.5 Tesla and may guide future research.
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Affiliation(s)
- Manish Shaw
- Department of Cardiovascular Radiology and Endovascular Interventions, Cardiothoracic and Neurosciences Centre, All India Institute of Medical Sciences, Room 10A, New Delhi, 110029, India
| | - Vineeta Ojha
- Department of Cardiovascular Radiology and Endovascular Interventions, Cardiothoracic and Neurosciences Centre, All India Institute of Medical Sciences, Room 10A, New Delhi, 110029, India
| | - Kartik P Ganga
- Department of Cardiovascular Radiology and Endovascular Interventions, Cardiothoracic and Neurosciences Centre, All India Institute of Medical Sciences, Room 10A, New Delhi, 110029, India
| | - Amarindar Singh Malhi
- Department of Cardiovascular Radiology and Endovascular Interventions, Cardiothoracic and Neurosciences Centre, All India Institute of Medical Sciences, Room 10A, New Delhi, 110029, India
| | - S H Chandrashekhara
- Department of Cardiovascular Radiology and Endovascular Interventions, Cardiothoracic and Neurosciences Centre, All India Institute of Medical Sciences, Room 10A, New Delhi, 110029, India
| | - Sanjeev Kumar
- Department of Cardiovascular Radiology and Endovascular Interventions, Cardiothoracic and Neurosciences Centre, All India Institute of Medical Sciences, Room 10A, New Delhi, 110029, India
| | - Maroof Ahmad Khan
- Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Priya Jagia
- Department of Cardiovascular Radiology and Endovascular Interventions, Cardiothoracic and Neurosciences Centre, All India Institute of Medical Sciences, Room 10A, New Delhi, 110029, India.
| | - Sanjiv Sharma
- Department of Cardiovascular Radiology and Endovascular Interventions, Cardiothoracic and Neurosciences Centre, All India Institute of Medical Sciences, Room 10A, New Delhi, 110029, India
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21
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Mavrogeni S, Pepe A, Nijveldt R, Ntusi N, Sierra-Galan LM, Bratis K, Wei J, Mukherjee M, Markousis-Mavrogenis G, Gargani L, Sade LE, Ajmone-Marsan N, Seferovic P, Donal E, Nurmohamed M, Cerinic MM, Sfikakis P, Kitas G, Schwitter J, Lima JAC, Dawson D, Dweck M, Haugaa KH, Keenan N, Moon J, Stankovic I, Donal E, Cosyns B. Cardiovascular magnetic resonance in autoimmune rheumatic diseases: a clinical consensus document by the European Association of Cardiovascular Imaging. Eur Heart J Cardiovasc Imaging 2022; 23:e308-e322. [PMID: 35808990 DOI: 10.1093/ehjci/jeac134] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 06/21/2022] [Indexed: 11/12/2022] Open
Abstract
Autoimmune rheumatic diseases (ARDs) involve multiple organs including the heart and vasculature. Despite novel treatments, patients with ARDs still experience a reduced life expectancy, partly caused by the higher prevalence of cardiovascular disease (CVD). This includes CV inflammation, rhythm disturbances, perfusion abnormalities (ischaemia/infarction), dysregulation of vasoreactivity, myocardial fibrosis, coagulation abnormalities, pulmonary hypertension, valvular disease, and side-effects of immunomodulatory therapy. Currently, the evaluation of CV involvement in patients with ARDs is based on the assessment of cardiac symptoms, coupled with electrocardiography, blood testing, and echocardiography. However, CVD may not become overt until late in the course of the disease, thus potentially limiting the therapeutic window for intervention. More recently, cardiovascular magnetic resonance (CMR) has allowed for the early identification of pathophysiologic structural/functional alterations that take place before the onset of clinically overt CVD. CMR allows for detailed evaluation of biventricular function together with tissue characterization of vessels/myocardium in the same examination, yielding a reliable assessment of disease activity that might not be mirrored by blood biomarkers and other imaging modalities. Therefore, CMR provides diagnostic information that enables timely clinical decision-making and facilitates the tailoring of treatment to individual patients. Here we review the role of CMR in the early and accurate diagnosis of CVD in patients with ARDs compared with other non-invasive imaging modalities. Furthermore, we present a consensus-based decision algorithm for when a CMR study could be considered in patients with ARDs, together with a standardized study protocol. Lastly, we discuss the clinical implications of findings from a CMR examination.
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Affiliation(s)
- S Mavrogeni
- Onassis Cardiac Surgery Center, Leof. Andrea Siggrou 356, Kallithea 176 74, Greece.,Exercise Physiology and Sport Medicine Clinic, Center for Adolescent Medicine and UNESCO Chair in Adolescent Health Care, First Department of Pediatrics, School of Medicine, National and Kapodistrian University of Athens, Aghia Sophia Children's Hospital, 115 27 Athens, Greece
| | - A Pepe
- Institute of Radiology, Department of Medicine, University of Padua, 35122 Padua, Italy
| | - R Nijveldt
- Department of Cardiology, Radboud University Medical Center, 6525 GA, Nijmegen, the Netherlands
| | - N Ntusi
- University of Cape Town & Groote Schuur Hospital, City of Cape Town, 7700 Western Cape, South Africa
| | - L M Sierra-Galan
- Department of Cardiology, American British Cowdray Medical Center, 05330 Mexico City, Mexico
| | - K Bratis
- Department of Cardiology, Manchester Royal Infirmary, Manchester M13 9WL, UK
| | - J Wei
- Barbra Streisand Women's Heart Center, Cedars-Sinai Smidt Heart Institute, Los Angeles, CA 90048, USA.,Preventive and Rehabilitative Cardiac Center, Cedars-Sinai Smidt Heart Institute, Los Angeles, CA 90048, USA
| | - M Mukherjee
- Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | | | - L Gargani
- Department of Surgical, Medical and Molecular Pathology and Critical Care Medicine, University of Pisa, 56126 Pisa, Italy
| | - L E Sade
- University of Pittsburgh, University of Pittsburgh Medical Center, Heart and Vascular Institute, Pittsburgh, PA 15260, USA.,Department of Cardiology, Baskent University, 06790 Ankara, Turkey
| | - N Ajmone-Marsan
- Department of Cardiology, Leiden University Medical Center, 2311 EZ Leiden, the Netherlands
| | - P Seferovic
- Department of Cardiology, Belgrade University, 11000 Belgrade, Serbia
| | - E Donal
- Université RENNES-1, CHU, 35000 Rennes, France
| | - M Nurmohamed
- Amsterdam Rheumatology Immunology Center, Amsterdam University Medical Centers, 1105 AZ, Amsterdam, the Netherlands
| | - M Matucci Cerinic
- Experimental and Clinical Medicine, Division of Internal Medicine and Rheumatology, Azienda Ospedaliera Universitaria Careggi, University of Florence, 50121 Florence, Italy.,Unit of Immunology, Rheumatology, Allergy and Rare Diseases (UnIRAR), IRCCS, San Raffaele Hospital, 20132 Milan, Italy
| | - P Sfikakis
- First Department of Propeudeutic and Internal medicine, Laikon Hospital, Athens University Medical School, 115 27 Athens, Greece
| | - G Kitas
- Arthritis Research UK Epidemiology Unit, Manchester University, Manchester M13 9PL, UK
| | - J Schwitter
- Lausanne University Hospital, CHUV, CH-1011 Lausanne, Switzerland.,Faculty of Biology and Medicine, University of Lausanne, 1015 UniL, Switzerland.,Director CMR Center of the University Hospital Lausanne, CHUV, CH-1011 Lausanne, Switzerland
| | - J A C Lima
- Division of Cardiology, Department of Medicine, Johns Hopkins Hospital, Baltimore, MD 21287, USA
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22
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Topriceanu CC, Pierce I, Moon JC, Captur G. T 2 and T 2⁎ mapping and weighted imaging in cardiac MRI. Magn Reson Imaging 2022; 93:15-32. [PMID: 35914654 DOI: 10.1016/j.mri.2022.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 07/20/2022] [Accepted: 07/20/2022] [Indexed: 11/29/2022]
Abstract
Cardiac imaging is progressing from simple imaging of heart structure and function to techniques visualizing and measuring underlying tissue biological changes that can potentially define disease and therapeutic options. These techniques exploit underlying tissue magnetic relaxation times: T1, T2 and T2*. Initial weighting methods showed myocardial heterogeneity, detecting regional disease. Current methods are now fully quantitative generating intuitive color maps that do not only expose regionality, but also diffuse changes - meaning that between-scan comparisons can be made to define disease (compared to normal) and to monitor interval change (compared to old scans). T1 is now familiar and used clinically in multiple scenarios, yet some technical challenges remain. T2 is elevated with increased tissue water - oedema. Should there also be blood troponin elevation, this oedema likely reflects inflammation, a key biological process. T2* falls in the presence of magnetic/paramagnetic materials - practically, this means it measures tissue iron, either after myocardial hemorrhage or in myocardial iron overload. This review discusses how T2 and T2⁎ imaging work (underlying physics, innovations, dependencies, performance), current and emerging use cases, quality assurance processes for global delivery and future research directions.
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Affiliation(s)
- Constantin-Cristian Topriceanu
- Cardiac MRI Unit, Barts Heart Centre, West Smithfield, London, UK; UCL Institute of Cardiovascular Science, University College London, London, UK; UCL MRC Unit for Lifelong Health and Ageing, University College London, London, UK
| | - Iain Pierce
- Cardiac MRI Unit, Barts Heart Centre, West Smithfield, London, UK; UCL Institute of Cardiovascular Science, University College London, London, UK
| | - James C Moon
- Cardiac MRI Unit, Barts Heart Centre, West Smithfield, London, UK; UCL Institute of Cardiovascular Science, University College London, London, UK
| | - Gabriella Captur
- Cardiac MRI Unit, Barts Heart Centre, West Smithfield, London, UK; UCL Institute of Cardiovascular Science, University College London, London, UK; UCL MRC Unit for Lifelong Health and Ageing, University College London, London, UK; The Royal Free Hospital, Centre for Inherited Heart Muscle Conditions, Cardiology Department, Pond Street, Hampstead, London, UK.
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23
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O'Brien AT, Gil KE, Varghese J, Simonetti OP, Zareba KM. T2 mapping in myocardial disease: a comprehensive review. J Cardiovasc Magn Reson 2022; 24:33. [PMID: 35659266 PMCID: PMC9167641 DOI: 10.1186/s12968-022-00866-0] [Citation(s) in RCA: 53] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 04/27/2022] [Indexed: 12/20/2022] Open
Abstract
Cardiovascular magnetic resonance (CMR) is considered the gold standard imaging modality for myocardial tissue characterization. Elevated transverse relaxation time (T2) is specific for increased myocardial water content, increased free water, and is used as an index of myocardial edema. The strengths of quantitative T2 mapping lie in the accurate characterization of myocardial edema, and the early detection of reversible myocardial disease without the use of contrast agents or ionizing radiation. Quantitative T2 mapping overcomes the limitations of T2-weighted imaging for reliable assessment of diffuse myocardial edema and can be used to diagnose, stage, and monitor myocardial injury. Strong evidence supports the clinical use of T2 mapping in acute myocardial infarction, myocarditis, heart transplant rejection, and dilated cardiomyopathy. Accumulating data support the utility of T2 mapping for the assessment of other cardiomyopathies, rheumatologic conditions with cardiac involvement, and monitoring for cancer therapy-related cardiac injury. Importantly, elevated T2 relaxation time may be the first sign of myocardial injury in many diseases and oftentimes precedes symptoms, changes in ejection fraction, and irreversible myocardial remodeling. This comprehensive review discusses the technical considerations and clinical roles of myocardial T2 mapping with an emphasis on expanding the impact of this unique, noninvasive tissue parameter.
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Affiliation(s)
- Aaron T O'Brien
- Ohio University Heritage College of Osteopathic Medicine, Athens, Ohio, USA
| | - Katarzyna E Gil
- Department of Internal Medicine, Division of Cardiovascular Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - Juliet Varghese
- Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, Ohio, USA
| | - Orlando P Simonetti
- Department of Internal Medicine, Division of Cardiovascular Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
- Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, Ohio, USA
- Department of Radiology, The Ohio State University, Columbus, Ohio, USA
| | - Karolina M Zareba
- Department of Internal Medicine, Division of Cardiovascular Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA.
- Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, Ohio, USA.
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24
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Teh I, Romero R. WA, Boyle J, Coll‐Font J, Dall'Armellina E, Ennis DB, Ferreira PF, Kalra P, Kolipaka A, Kozerke S, Lohr D, Mongeon F, Moulin K, Nguyen C, Nielles‐Vallespin S, Raterman B, Schreiber LM, Scott AD, Sosnovik DE, Stoeck CT, Tous C, Tunnicliffe EM, Weng AM, Croisille P, Viallon M, Schneider JE. Validation of cardiac diffusion tensor imaging sequences: A multicentre test-retest phantom study. NMR IN BIOMEDICINE 2022; 35:e4685. [PMID: 34967060 PMCID: PMC9285553 DOI: 10.1002/nbm.4685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 11/19/2021] [Accepted: 12/24/2021] [Indexed: 05/23/2023]
Abstract
Cardiac diffusion tensor imaging (DTI) is an emerging technique for the in vivo characterisation of myocardial microstructure, and there is a growing need for its validation and standardisation. We sought to establish the accuracy, precision, repeatability and reproducibility of state-of-the-art pulse sequences for cardiac DTI among 10 centres internationally. Phantoms comprising 0%-20% polyvinylpyrrolidone (PVP) were scanned with DTI using a product pulsed gradient spin echo (PGSE; N = 10 sites) sequence, and a custom motion-compensated spin echo (SE; N = 5) or stimulated echo acquisition mode (STEAM; N = 5) sequence suitable for cardiac DTI in vivo. A second identical scan was performed 1-9 days later, and the data were analysed centrally. The average mean diffusivities (MDs) in 0% PVP were (1.124, 1.130, 1.113) x 10-3 mm2 /s for PGSE, SE and STEAM, respectively, and accurate to within 1.5% of reference data from the literature. The coefficients of variation in MDs across sites were 2.6%, 3.1% and 2.1% for PGSE, SE and STEAM, respectively, and were similar to previous studies using only PGSE. Reproducibility in MD was excellent, with mean differences in PGSE, SE and STEAM of (0.3 ± 2.3, 0.24 ± 0.95, 0.52 ± 0.58) x 10-5 mm2 /s (mean ± 1.96 SD). We show that custom sequences for cardiac DTI provide accurate, precise, repeatable and reproducible measurements. Further work in anisotropic and/or deforming phantoms is warranted.
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Affiliation(s)
- Irvin Teh
- Leeds Institute of Cardiovascular and Metabolic MedicineUniversity of LeedsLeedsUK
| | - William A. Romero R.
- Univ Lyon, INSA‐Lyon, Université Claude Bernard Lyon 1UJM‐Saint Etienne, CNRS, Inserm, CREATIS UMR 5220, U1294, F‐42023Saint EtienneFrance
| | - Jordan Boyle
- School of Mechanical EngineeringUniversity of LeedsLeedsUK
| | - Jaume Coll‐Font
- Cardiovascular Research Center and A. A. Martinos Center for Biomedical ImagingMassachusetts General Hospital and Harvard Medical SchoolBostonMassachusettsUSA
| | - Erica Dall'Armellina
- Leeds Institute of Cardiovascular and Metabolic MedicineUniversity of LeedsLeedsUK
| | - Daniel B. Ennis
- Division of RadiologyVA Palo Alto Health Care SystemPalo AltoCaliforniaUSA
- Department of RadiologyStanford UniversityStanfordCaliforniaUSA
| | - Pedro F. Ferreira
- Cardiovascular Magnetic Resonance UnitThe Royal Brompton and Harefield NHS Foundation TrustLondonUK
- National Heart and Lung InstituteImperial College LondonLondonUK
| | - Prateek Kalra
- Department of RadiologyThe Ohio State University Wexner Medical CenterColumbusOhioUSA
| | - Arunark Kolipaka
- Department of RadiologyThe Ohio State University Wexner Medical CenterColumbusOhioUSA
| | - Sebastian Kozerke
- Institute for Biomedical EngineeringUniversity and ETH ZurichZurichSwitzerland
| | - David Lohr
- Department of Cardiovascular ImagingComprehensive Heart Failure CenterWürzburgGermany
| | | | - Kévin Moulin
- Department of RadiologyStanford UniversityStanfordCaliforniaUSA
| | - Christopher Nguyen
- Cardiovascular Research Center and A. A. Martinos Center for Biomedical ImagingMassachusetts General Hospital and Harvard Medical SchoolBostonMassachusettsUSA
| | - Sonia Nielles‐Vallespin
- Cardiovascular Magnetic Resonance UnitThe Royal Brompton and Harefield NHS Foundation TrustLondonUK
- National Heart and Lung InstituteImperial College LondonLondonUK
| | - Brian Raterman
- Department of RadiologyThe Ohio State University Wexner Medical CenterColumbusOhioUSA
| | - Laura M. Schreiber
- Department of Cardiovascular ImagingComprehensive Heart Failure CenterWürzburgGermany
| | - Andrew D. Scott
- Cardiovascular Magnetic Resonance UnitThe Royal Brompton and Harefield NHS Foundation TrustLondonUK
- National Heart and Lung InstituteImperial College LondonLondonUK
| | - David E. Sosnovik
- Cardiovascular Research Center and A. A. Martinos Center for Biomedical ImagingMassachusetts General Hospital and Harvard Medical SchoolBostonMassachusettsUSA
| | - Christian T. Stoeck
- Institute for Biomedical EngineeringUniversity and ETH ZurichZurichSwitzerland
| | - Cyril Tous
- Department of Radiology, Radiation‐Oncology and Nuclear Medicine and Institute of Biomedical EngineeringUniversité de MontréalMontréalCanada
| | - Elizabeth M. Tunnicliffe
- Radcliffe Department of MedicineUniversity of OxfordOxfordUK
- Oxford NIHR Biomedical Research CentreOxfordUK
| | - Andreas M. Weng
- Department of Diagnostic and Interventional RadiologyUniversity Hospital WürzburgWürzburgGermany
| | - Pierre Croisille
- Univ Lyon, INSA‐Lyon, Université Claude Bernard Lyon 1UJM‐Saint Etienne, CNRS, Inserm, CREATIS UMR 5220, U1294, F‐42023Saint EtienneFrance
| | - Magalie Viallon
- Univ Lyon, INSA‐Lyon, Université Claude Bernard Lyon 1UJM‐Saint Etienne, CNRS, Inserm, CREATIS UMR 5220, U1294, F‐42023Saint EtienneFrance
| | - Jürgen E. Schneider
- Leeds Institute of Cardiovascular and Metabolic MedicineUniversity of LeedsLeedsUK
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25
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Li S, Mou A, Li X, Guo Y, Song Q, Liu A, Li Z. Myocardium microcirculation study in a healthy Chinese population using 3.0-T cardiac magnetic resonance intravoxel incoherent motion imaging. Acta Radiol 2022; 63:596-605. [PMID: 33887964 DOI: 10.1177/02841851211006311] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Intravoxel incoherent motion imaging (IVIM) can non-invasively evaluate diffusion and microvascular perfusion. PURPOSE To explore the myocardium microcirculation of a healthy Chinese population by using cardiac magnetic resonance (CMR) IVIM. MATERIAL AND METHODS A total of 80 healthy volunteers (44 men, 36 women) who underwent 3.0-T CMR examination were enrolled. All participants had cardiac cine imaging and short-axis CMR-IVIM of the left ventricle (LV) using multiple b-values. The consistency of the IVIM parameters was assessed by intraclass correlation coefficient (ICC) and the Bland-Altman test. Spearman correlation analysis was performed between IVIM parameters and age, and body mass index (BMI). The differences of IVIM parameters were analyzed between gender and different ages. RESULTS LV end-diastolic volume (EDV), end-systolic volume (ESV), LVmass, cardiac output (CO), and BMI in the male group were higher than those in the female group (P<0.05). IVIM parameters had good intra-observer and inter-observer consistency (≥0.75). Bland-Altman analysis also showed good intra-observer and inter-observer consistency. ADCfast decreased with increasing female age (rs = -0.37; P = 0.01), while IVIM parameters had no correlation with BMI regardless of sex. ADCfast in the female group had a statistical difference between different age groups. The ADCslow and f in the male group were lower than those in the female group (P<0.05); however, there was no statistical difference in ADCfast between genders. CONCLUSION IVIM parameters in healthy Chinese volunteers provided good consistency. There was a negative correlation between ADCfast and age in the female group.
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Affiliation(s)
- Shilan Li
- Department of Radiology, The First Affiliated Hospital of Dalian Medical University, Dalian City, Liaoning Province, PR China
| | - Anna Mou
- Department of Radiology, Affiliated Hospital of Medical School, University of Electronic Science and Technology of China, Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital, PR China
| | - Xin Li
- Department of Radiology, The First Affiliated Hospital of Dalian Medical University, Dalian City, Liaoning Province, PR China
| | - Yan Guo
- GE Healthcare, Shenyang City, Liaoning Province, PR China
| | - Qingwei Song
- Department of Radiology, The First Affiliated Hospital of Dalian Medical University, Dalian City, Liaoning Province, PR China
| | - Ailian Liu
- Department of Radiology, The First Affiliated Hospital of Dalian Medical University, Dalian City, Liaoning Province, PR China
| | - Zhiyong Li
- Department of Radiology, The First Affiliated Hospital of Dalian Medical University, Dalian City, Liaoning Province, PR China
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26
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Ghavamian A, Liu C, Kang B, Yuan X, Wang X, Gao L, Zhao X. Liver T1 relaxation time of the 'normal liver' in healthy Asians: measurement with MOLLI and B 1-corrected VFA methods at 3T. Br J Radiol 2022; 95:20211008. [PMID: 35324344 PMCID: PMC10993984 DOI: 10.1259/bjr.20211008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 01/15/2022] [Accepted: 02/02/2022] [Indexed: 01/01/2023] Open
Abstract
OBJECTIVES Liver T1 is a potential magnetic resonance imaging biomarker for liver diseases. This study aimed to determine the T1 relaxation time of the normal liver (PDFF<5%) in healthy Asian volunteers using modified look-locker inversion recovery (MOLLI) and B1 inhomogeneity-corrected variable flip angle (B1-corrected VFA). METHODS 60 healthy Asian volunteers without focal or diffuse liver disease underwent a liver scan at 3T magnetic resonance. Proton density fat fraction (PDFF) and liver stiffness measurements were applied for the quantification of liver fat and fibrosis. T1 mapping was performed with MOLLI and B1-corrected VFA sequences. Bland-Altman, linear regression, Student t-test, and one-way analysis of variance were used for statistical analysis. RESULTS The mean T1 relaxation times of the whole liver were 901 ± 34 ms by MOLLI, and 948 ± 29 ms by B1-corrected VFA in healthy volunteers. There was a strong correlation (r = 0.86, p < 0.0001) for liver T1 between two T1 mapping methods. There were significant differences between the right and left lobes in liver T1 relaxation times using both methods (p < 0.05). Gender and Asian ethnic disparities had no impact on liver T1 relaxation times. CONCLUSION T1 relaxation times of the normal liver (PDFF<5%) in healthy volunteers were established by MOLLI and B1-corrected VFA T1 mapping methods at 3T. It may provide suitable and robust baseline values for the assessment of liver diseases. ADVANCES IN KNOWLEDGE Gender and Asian ethnic disparities do not impact liver T1 relaxation time measurements.
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Affiliation(s)
- Armin Ghavamian
- Department of Radiology, Shandong Provincial Hospital, Cheeloo
College of Medicine, Shandong University,
Shandong, China
| | - Cuihong Liu
- Department of Radiology, Shandong Provincial Hospital, Cheeloo
College of Medicine, Shandong University,
Shandong, China
- Shandong Provincial Hospital Affiliated to Shandong First
Medical University, Shandong University,
Shandong, China
| | - Bing Kang
- Shandong Provincial Hospital Affiliated to Shandong First
Medical University, Shandong University,
Shandong, China
| | - Xianshun Yuan
- Shandong Provincial Hospital Affiliated to Shandong First
Medical University, Shandong University,
Shandong, China
| | - Ximing Wang
- Department of Radiology, Shandong Provincial Hospital, Cheeloo
College of Medicine, Shandong University,
Shandong, China
- Shandong Provincial Hospital Affiliated to Shandong First
Medical University, Shandong University,
Shandong, China
| | - Ling Gao
- Department of Endocrinology, Shandong Provincial Hospital
affiliated to Shandong University, Shandong Clinical Medical Center of
Endocrinology and Metabolism, Institute of Endocrinology and Metabolism,
Shandong Academy of Clinical Medicine,
Shandong, China
| | - Xinya Zhao
- Department of Radiology, Shandong Provincial Hospital, Cheeloo
College of Medicine, Shandong University,
Shandong, China
- Shandong Provincial Hospital Affiliated to Shandong First
Medical University, Shandong University,
Shandong, China
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27
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Canale ML, Coviello K, Solarino G, Del Meglio J, Simonetti F, Venturini E, Camerini A, Maurea N, Bisceglia I, Tessa C, Casolo G. Case Series: Recovery of Chemotherapy-Related Acute Heart Failure by the Combined Use of Sacubitril Valsartan and Wearable Cardioverter Defibrillator: A Novel Winning Combination in Cardio-Oncology. Front Cardiovasc Med 2022; 9:801143. [PMID: 35299980 PMCID: PMC8923038 DOI: 10.3389/fcvm.2022.801143] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 01/24/2022] [Indexed: 11/28/2022] Open
Abstract
Effective anticancer treatments have dramatically improved the outcome of patients with cancer, but cardiac toxicity reduces their clinical efficacy in a non-negligible percentage of patients. Sacubitril/valsartan is a new paradigm in the treatment of chronic heart failure, with a reduced ejection fraction due to the enhancement of natriuretic peptides' properties when coupled with a blocking effect on the angiotensin II type 1 (AT1) receptors. As with other clinical conditions of heart failure with potentially reversible declines in cardiac function, a wearable cardioverter defibrillator (WCD) is a valid tool for protection against sudden death until recovery occurs. We report a case series of four patients with chemotherapy-related acute cardiac failure with severely reduced cardiac function. They were successfully treated with sacubitril/valsartan while being protected from malignant arrhythmias using a wearable cardioverter defibrillator until the recovery of cardiac function. Sacubitril/valsartan was confirmed to be effective in anthracycline-related cardiac toxicity and the wearable cardioverter defibrillator should be considered as a support tool even in the oncology patient.
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Affiliation(s)
- Maria Laura Canale
- Division of Cardiology, Azienda USL Toscana Nord-Ovest, Versilia Hospital, Lido di Camaiore, Italy
- *Correspondence: Maria Laura Canale
| | - Katia Coviello
- Division of Cardiology, Azienda USL Toscana Nord-Ovest, Versilia Hospital, Lido di Camaiore, Italy
| | - Gianluca Solarino
- Division of Cardiology, Azienda USL Toscana Nord-Ovest, Versilia Hospital, Lido di Camaiore, Italy
| | - Jacopo Del Meglio
- Division of Cardiology, Azienda USL Toscana Nord-Ovest, Versilia Hospital, Lido di Camaiore, Italy
| | - Federico Simonetti
- Hematology, Azienda USL Toscana Nord-Ovest, Versilia Hospital, Lido di Camaiore, Italy
| | - Elio Venturini
- Cardiac Rehabilitation Unit, Azienda USL Toscana Nord-Ovest, Civil Hospital, Cecina, Italy
| | - Andrea Camerini
- Medical Oncology, Azienda USL Toscana Nord-Ovest, Versilia Hospital, Lido di Camaiore, Italy
| | - Nicola Maurea
- S.C. Cardiologia, Istituto Nazionale Tumori, IRCCS Fondazione G. Pascale, Naples, Italy
| | - Irma Bisceglia
- Servizi Cardiologici Integrati, Azienda Ospedaliera San Camillo-Forlanini, Rome, Italy
| | - Carlo Tessa
- Division of Radiology, Azienda USL Toscana Nord-Ovest, Nuovo Ospedale Apuano, Massa, Italy
| | - Giancarlo Casolo
- Division of Cardiology, Azienda USL Toscana Nord-Ovest, Versilia Hospital, Lido di Camaiore, Italy
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Snel GJH, van den Boomen M, Hurtado-Ortiz K, Slart RHJA, van Deursen VM, Nguyen CT, Sosnovik DE, Dierckx RAJO, Velthuis BK, Borra RJH, Prakken NHJ. Cardiac Alterations on 3T MRI in Young Adults With Sedentary Lifestyle-Related Risk Factors. Front Cardiovasc Med 2022; 9:840790. [PMID: 35274012 PMCID: PMC8902075 DOI: 10.3389/fcvm.2022.840790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 01/18/2022] [Indexed: 12/04/2022] Open
Abstract
Background Young adult populations with the sedentary lifestyle-related risk factors overweight, hypertension, and type 2 diabetes (T2D) are growing, and associated cardiac alterations could overlap early findings in non-ischemic cardiomyopathy on cardiovascular MRI. We aimed to investigate cardiac morphology, function, and tissue characteristics for these cardiovascular risk factors. Methods Non-athletic non-smoking asymptomatic adults aged 18-45 years were prospectively recruited and underwent 3Tesla cardiac MRI. Multivariate linear regression was performed to investigate independent associations of risk factor-related parameters with cardiac MRI values. Results We included 311 adults (age, 32 ± 7 years; men, 49%). Of them, 220 subjects had one or multiple risk factors, while 91 subjects were free of risk factors. For overweight, increased body mass index (per SD = 5.3 kg/m2) was associated with increased left ventricular (LV) mass (+7.3 g), biventricular higher end-diastolic (LV, +8.6 ml), and stroke volumes (SV; +5.0 ml), higher native T1 (+7.3 ms), and lower extracellular volume (ECV, -0.38%), whereas the higher waist-hip ratio was associated with lower biventricular volumes. Regarding hypertension, increased systolic blood pressure (per SD = 14 mmHg) was associated with increased LV mass (+6.9 g), higher LV ejection fraction (EF; +1.0%), and lower ECV (-0.48%), whereas increased diastolic blood pressure was associated with lower LV EF. In T2D, increased HbA1c (per SD = 9.0 mmol/mol) was associated with increased LV mass (+2.2 g), higher right ventricular end-diastolic volume (+3.2 ml), and higher ECV (+0.27%). Increased heart rate was linked with decreased LV mass, lower biventricular volumes, and lower T2 values. Conclusions Young asymptomatic adults with overweight, hypertension, and T2D show subclinical alterations in cardiac morphology, function, and tissue characteristics. These alterations should be considered in cardiac MRI-based clinical decision making.
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Affiliation(s)
- Gert J. H. Snel
- Department of Radiology, Medical Imaging Center, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Maaike van den Boomen
- Department of Radiology, Medical Imaging Center, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
- Cardiovascular Research Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Katia Hurtado-Ortiz
- Faculty of Medicine, National Autonomous University of Mexico (UNAM), Ciudad Universitaria, Mexico City, Mexico
| | - Riemer H. J. A. Slart
- Department of Nuclear Medicine and Molecular Imaging, Medical Imaging Center, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- Department of Biomedical Photonic Imaging, Faculty of Science and Technology, University of Twente, Enschede, Netherlands
| | - Vincent M. van Deursen
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Christopher T. Nguyen
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
- Cardiovascular Research Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - David E. Sosnovik
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
- Cardiovascular Research Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
- Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA, United States
| | - Rudi A. J. O. Dierckx
- Department of Nuclear Medicine and Molecular Imaging, Medical Imaging Center, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Birgitta K. Velthuis
- Department of Radiology, University Medical Center Utrecht, University of Utrecht, Utrecht, Netherlands
| | - Ronald J. H. Borra
- Department of Radiology, Medical Imaging Center, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- Department of Nuclear Medicine and Molecular Imaging, Medical Imaging Center, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Niek H. J. Prakken
- Department of Radiology, Medical Imaging Center, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
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Meloni A, Nicola M, Positano V, D'Angelo G, Barison A, Todiere G, Grigoratos C, Keilberg P, Pistoia L, Gargani L, Ripoli A, Pepe A. Myocardial T2 values at 1.5 T by a segmental approach with healthy aging and gender. Eur Radiol 2022; 32:2962-2975. [PMID: 35028749 DOI: 10.1007/s00330-021-08396-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 09/15/2021] [Accepted: 10/09/2021] [Indexed: 12/14/2022]
Abstract
OBJECTIVES Our aims were to obtain myocardial regional and global T2 values as a reference for normality for the first time using a GE scanner and to assess their association with physiological variables. METHODS One hundred healthy volunteers aged 20-70 years (50% females) underwent cardiovascular magnetic resonance. Basal, mid-ventricular, and apical short-axis slices of the left ventricle were acquired by a multi-echo fast-spin-echo (MEFSE) sequence. Image analysis was performed with a commercially available software package. The T2 value was assessed in all 16 myocardial segments and the global value was the mean. RESULTS The global T2 value averaged across all subjects was 52.2 ± 2.5 ms (range: 47.0-59.9 ms). Inter-study, intra-observer, and inter-observer reproducibility was good (coefficient of variation < 5%). 3.6% of the segments was excluded because of artifacts and/or partial-volume effects. Segmental T2 values differed significantly (p < 0.0001), with the lowest value in the basal anterolateral segment (50.0 ± 3.5 ms) and the highest in the apical lateral segment (54.9 ± 5.1 ms). Mean T2 was significantly lower in the basal slice compared to both mid-ventricular and apical slices and in the mid-ventricular slice than in the apical slice. Aging was associated with increased segmental and global T2 values. Females showed higher T2 values than males. T2 values were not correlated to heart rate. A significant inverse correlation was detected between global T2 values and mean wall thickness. CONCLUSIONS The optimized MEFSE sequence allows for robust and reproducible quantification of segmental T2 values. Gender- and age-specific segmental reference values must be defined for distinguishing healthy and diseased myocardium. KEY POINTS • In healthy subjects, T2 values differ among myocardial segments and are influenced by age and gender. • Normal T2 values in the myocardium, usable as a benchmark by other GE sites, were established.
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Affiliation(s)
- Antonella Meloni
- Magnetic Resonance Imaging Unit, Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy.,Bioengineering Unit, Fondazione G. Monasterio CNR-Regione Toscana, Area della Ricerca S. Cataldo, Via Moruzzi, 1 -, 56124, Pisa, Italy
| | - Martini Nicola
- Magnetic Resonance Imaging Unit, Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy.,Bioengineering Unit, Fondazione G. Monasterio CNR-Regione Toscana, Area della Ricerca S. Cataldo, Via Moruzzi, 1 -, 56124, Pisa, Italy
| | - Vincenzo Positano
- Magnetic Resonance Imaging Unit, Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy.,Bioengineering Unit, Fondazione G. Monasterio CNR-Regione Toscana, Area della Ricerca S. Cataldo, Via Moruzzi, 1 -, 56124, Pisa, Italy
| | - Gennaro D'Angelo
- Institute of Clinical Physiology, National Research Council, Pisa, Italy
| | - Andrea Barison
- Division of Cardiology and Cardiovascular Medicine, Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy
| | - Giancarlo Todiere
- Division of Cardiology and Cardiovascular Medicine, Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy
| | - Chrysanthos Grigoratos
- Division of Cardiology and Cardiovascular Medicine, Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy
| | - Petra Keilberg
- Magnetic Resonance Imaging Unit, Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy
| | - Laura Pistoia
- Magnetic Resonance Imaging Unit, Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy
| | - Luna Gargani
- Institute of Clinical Physiology, National Research Council, Pisa, Italy
| | - Andrea Ripoli
- Bioengineering Unit, Fondazione G. Monasterio CNR-Regione Toscana, Area della Ricerca S. Cataldo, Via Moruzzi, 1 -, 56124, Pisa, Italy
| | - Alessia Pepe
- Magnetic Resonance Imaging Unit, Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy. .,Institute of Radiology, University of Padua, Padua, Italy.
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30
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Henningsson M. Cartesian dictionary-based native T 1 and T 2 mapping of the myocardium. Magn Reson Med 2022; 87:2347-2362. [PMID: 34985143 DOI: 10.1002/mrm.29143] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 12/08/2021] [Accepted: 12/14/2021] [Indexed: 02/06/2023]
Abstract
PURPOSE To implement and evaluate a new dictionary-based technique for native myocardial T1 and T2 mapping using Cartesian sampling. METHODS The proposed technique (Multimapping) consisted of single-shot Cartesian image acquisitions in 10 consecutive cardiac cycles, with inversion pulses in cycle 1 and 5, and T2 preparation (TE: 30 ms, 50 ms, and 70 ms) in cycles 8-10. Multimapping was simulated for different T1 and T2 , where entries corresponding to the k-space centers were matched to acquired data. Experiments were performed in a phantom, 16 healthy subjects, and 3 patients with cardiovascular disease. RESULTS Multimapping phantom measurements showed good agreement with reference values for both T1 and T2 , with no discernable heart-rate dependency for T1 and T2 within the range of myocardium. In vivo mean T1 in healthy subjects was significantly higher using Multimapping (T1 = 1114 ± 14 ms) compared to the reference (T1 = 991 ± 26 ms) (p < 0.01). Mean Multimapping T2 (47.1 ± 1.3 ms) and T2 spatial variability (5.8 ± 1.0 ms) was significantly lower compared to the reference (T2 = 54.7 ± 2.2 ms, p < 0.001; spatial variability = 8.4 ± 2.0 ms, p < 0.01). Increased T1 and T2 was detected in all patients using Multimapping. CONCLUSIONS Multimapping allows for simultaneous native myocardial T1 and T2 mapping with a conventional Cartesian trajectory, demonstrating promising in vivo image quality and parameter quantification results.
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Affiliation(s)
- Markus Henningsson
- Division of Diagnostics and Specialist Medicine, Department of Health, Medicine and Caring Sciences (HMV), Linköping University, Linköping, Sweden.,Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden
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31
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Tribuna L, Oliveira PB, Iruela A, Marques J, Santos P, Teixeira T. Reference Values of Native T1 at 3T Cardiac Magnetic Resonance-Standardization Considerations between Different Vendors. Diagnostics (Basel) 2021; 11:diagnostics11122334. [PMID: 34943571 PMCID: PMC8699831 DOI: 10.3390/diagnostics11122334] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/02/2021] [Accepted: 12/06/2021] [Indexed: 01/13/2023] Open
Abstract
This study aimed at establishing native T1 reference values for a Canon Vantage Galan 3T system and comparing them with previously published values from different vendors. A total of 20 healthy volunteers (55% Women; 33.9 ± 11.1 years) underwent left ventricular T1 mapping at 3T MR. A MOLLI 5(3)3 sequence was used, acquiring three short-axis slices. Native T1 values are shown as means (±standard deviation) and Student’s independent samples t-test was used to test gender differences in T1 values. Pearson’s correlation coefficient analysis was used to compare two processes of T1 analysis. The results show a global native T1 mean value of 1124.9 ± 55.2 ms (exponential analysis), that of women being statistically higher than men (1163 ± 30.5 vs. 1077.9 ± 39.5 ms, respectively; p < 0.001). There were no specific tendencies for T1 times in different ventricular slices. We found a strong correlation (0.977, p < 0.001) with T1 times derived from parametric maps (1136.4 ± 60.2 ms). Native T1 reference values for a Canon 3T scanner were provided, and they are on par with those already reported from other vendors for a similar sequence. We also found a correlation between native T1 and gender, with higher values for women.
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Affiliation(s)
- Liliana Tribuna
- Department of Radiology, Hospital da Luz Aveiro, 3800-009 Aveiro, Portugal; (P.B.O.); (J.M.); (P.S.); (T.T.)
- Correspondence: ; Tel.: +351-918-609-355
| | - Pedro Belo Oliveira
- Department of Radiology, Hospital da Luz Aveiro, 3800-009 Aveiro, Portugal; (P.B.O.); (J.M.); (P.S.); (T.T.)
- Department of Radiology, Centro Hospitalar Universitário de Coimbra, 3004-561 Coimbra, Portugal
| | - Alba Iruela
- Clinical Scientist in MR, Canon Medical Systems Spain and Portugal, 08940 Cornellà de Llobregat, Spain;
| | - João Marques
- Department of Radiology, Hospital da Luz Aveiro, 3800-009 Aveiro, Portugal; (P.B.O.); (J.M.); (P.S.); (T.T.)
| | - Paulo Santos
- Department of Radiology, Hospital da Luz Aveiro, 3800-009 Aveiro, Portugal; (P.B.O.); (J.M.); (P.S.); (T.T.)
| | - Tiago Teixeira
- Department of Radiology, Hospital da Luz Aveiro, 3800-009 Aveiro, Portugal; (P.B.O.); (J.M.); (P.S.); (T.T.)
- Department of Cardiology, Centro Hospitalar de Entre o Douro e Vouga, 4520-211 Santa Maria da Feira, Portugal
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32
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Dorniak K, Di Sopra L, Sabisz A, Glinska A, Roy CW, Gorczewski K, Piccini D, Yerly J, Jankowska H, Fijałkowska J, Szurowska E, Stuber M, van Heeswijk RB. Respiratory Motion-Registered Isotropic Whole-Heart T 2 Mapping in Patients With Acute Non-ischemic Myocardial Injury. Front Cardiovasc Med 2021; 8:712383. [PMID: 34660714 PMCID: PMC8511642 DOI: 10.3389/fcvm.2021.712383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 09/06/2021] [Indexed: 11/13/2022] Open
Abstract
Background: T2 mapping is a magnetic resonance imaging technique that can be used to detect myocardial edema and inflammation. However, the focal nature of myocardial inflammation may render conventional 2D approaches suboptimal and make whole-heart isotropic 3D mapping desirable. While self-navigated 3D radial T2 mapping has been demonstrated to work well at a magnetic field strength of 3T, it results in too noisy maps at 1.5T. We therefore implemented a novel respiratory motion-resolved compressed-sensing reconstruction in order to improve the 3D T2 mapping precision and accuracy at 1.5T, and tested this in a heterogeneous patient cohort. Materials and Methods: Nine healthy volunteers and 25 consecutive patients with suspected acute non-ischemic myocardial injury (sarcoidosis, n = 19; systemic sclerosis, n = 2; acute graft rejection, n = 2, and myocarditis, n = 2) were included. The free-breathing T2 maps were acquired as three ECG-triggered T2-prepared 3D radial volumes. A respiratory motion-resolved reconstruction was followed by image registration of the respiratory states and pixel-wise T2 mapping. The resulting 3D maps were compared to routine 2D T2 maps. The T2 values of segments with and without late gadolinium enhancement (LGE) were compared in patients. Results: In the healthy volunteers, the myocardial T2 values obtained with the 2D and 3D techniques were similar (45.8 ± 1.8 vs. 46.8 ± 2.9 ms, respectively; P = 0.33). Conversely, in patients, T2 values did differ between 2D (46.7 ± 3.6 ms) and 3D techniques (50.1 ± 4.2 ms, P = 0.004). Moreover, with the 2D technique, T2 values of the LGE-positive segments were similar to those of the LGE-negative segments (T2LGE-= 46.2 ± 3.7 vs. T2LGE+ = 47.6 ± 4.1 ms; P = 0.49), whereas the 3D technique did show a significant difference (T2LGE- = 49.3 ± 6.7 vs. T2LGE+ = 52.6 ± 8.7 ms, P = 0.006). Conclusion: Respiratory motion-registered 3D radial imaging at 1.5T led to accurate isotropic 3D whole-heart T2 maps, both in the healthy volunteers and in a small patient cohort with suspected non-ischemic myocardial injury. Significantly higher T2 values were found in patients as compared to controls in 3D but not in 2D, suggestive of the technique's potential to increase the sensitivity of CMR at earlier stages of disease. Further study will be needed to demonstrate its accuracy.
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Affiliation(s)
- Karolina Dorniak
- Department of Noninvasive Cardiac Diagnostics, Medical University of Gdansk, Gdansk, Poland
| | - Lorenzo Di Sopra
- Department of Radiology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
| | - Agnieszka Sabisz
- Second Department of Radiology, Medical University of Gdansk, Gdansk, Poland
| | - Anna Glinska
- Second Department of Radiology, Medical University of Gdansk, Gdansk, Poland
| | - Christopher W Roy
- Department of Radiology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
| | | | - Davide Piccini
- Department of Radiology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland.,Advanced Clinical Imaging Technology, Siemens Healthcare AG, Lausanne, Switzerland
| | - Jérôme Yerly
- Department of Radiology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland.,Center for Biomedical Imaging (CIBM), Lausanne, Switzerland
| | - Hanna Jankowska
- Department of Noninvasive Cardiac Diagnostics, Medical University of Gdansk, Gdansk, Poland
| | - Jadwiga Fijałkowska
- Second Department of Radiology, Medical University of Gdansk, Gdansk, Poland
| | - Edyta Szurowska
- Second Department of Radiology, Medical University of Gdansk, Gdansk, Poland
| | - Matthias Stuber
- Department of Radiology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland.,Center for Biomedical Imaging (CIBM), Lausanne, Switzerland
| | - Ruud B van Heeswijk
- Department of Radiology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
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Han D, Miller RJH, Otaki Y, Gransar H, Kransdorf E, Hamilton M, Kittelson M, Patel J, Kobashigawa JA, Thomson L, Berman D, Tamarappoo B. Diagnostic Accuracy of Cardiovascular Magnetic Resonance for Cardiac Transplant Rejection: A Meta-analysis. JACC Cardiovasc Imaging 2021; 14:2337-2349. [PMID: 34274269 DOI: 10.1016/j.jcmg.2021.05.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 05/10/2021] [Accepted: 05/14/2021] [Indexed: 11/15/2022]
Abstract
OBJECTIVES The aim of this meta-analysis was to assess the diagnostic performance of various CMR imaging parameters for evaluating acute cardiac transplant rejection. BACKGROUND Endomyocardial biopsy is the current gold standard for detection of acute cardiac transplant rejection. Cardiac magnetic resonance (CMR) is uniquely capable of myocardial tissue characterization and may be useful as a noninvasive alternative for the diagnosis of graft rejection. METHODS PubMed and Web of Science were searched for relevant publications reporting on the use of CMR myocardial tissue characterization for detection of acute cardiac transplant rejection with endomyocardial biopsy as the reference standard. Pooled sensitivity, specificity, and hierarchical modeling-based summary receiver-operating characteristic curves were calculated. RESULTS Of 478 papers, 10 studies comprising 564 patients were included. The sensitivity and specificity for the detection of acute cardiac transplant rejection were 84.6 (95% CI: 65.6-94.0) and 70.1 (95% CI: 54.2-82.2) for T1, 86.5 (95% CI: 72.1-94.1) and 85.9 (95% CI: 65.2-94.6) for T2, 91.3 (95% CI: 63.9-98.4) and 67.6 (95% CI: 56.1-77.4) for extracellular volume fraction (ECV), and 50.1 (95% CI: 31.2-68.9) and 60.2 (95% CI: 36.7-79.7) for late gadolinium enhancement (LGE). The areas under the hierarchical modeling-based summary receiver-operating characteristic curve were 0.84 (95% CI: 0.81-0.87) for T1, 0.92 (95% CI: 0.89-94) for T2, 0.78 (95% CI: 0.74-0.81) for ECV, and 0.56 (95% CI: 0.51-0.60) for LGE. T2 values demonstrated the highest diagnostic accuracy, followed by native T1, ECV, and LGE (all P values < 0.001 for T1, ECV, and LGE vs T2). CONCLUSIONS T2 mapping demonstrated higher diagnostic accuracy than other CMR techniques. Native T1 and ECV provide high diagnostic use but lower diagnostic accuracy compared with T2, which was related primarily to lower specificity. LGE showed poor diagnostic performance for detection of rejection.
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Affiliation(s)
- Donghee Han
- Department of Imaging, Mark Taper Imaging Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Robert J H Miller
- Department of Cardiac Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Yuka Otaki
- Department of Imaging, Mark Taper Imaging Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Heidi Gransar
- Department of Imaging, Mark Taper Imaging Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Evan Kransdorf
- Smidt Heart Institute, Cedars-Sinai Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Michelle Hamilton
- Smidt Heart Institute, Cedars-Sinai Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Michele Kittelson
- Smidt Heart Institute, Cedars-Sinai Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Jignesh Patel
- Smidt Heart Institute, Cedars-Sinai Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Jon A Kobashigawa
- Smidt Heart Institute, Cedars-Sinai Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Louise Thomson
- Department of Imaging, Mark Taper Imaging Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Daniel Berman
- Department of Imaging, Mark Taper Imaging Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Balaji Tamarappoo
- Department of Imaging, Mark Taper Imaging Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA.
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Böttcher B, Lorbeer R, Stöcklein S, Beller E, Lang CI, Weber MA, Meinel FG. Global and Regional Test-Retest Reproducibility of Native T1 and T2 Mapping in Cardiac Magnetic Resonance Imaging. J Magn Reson Imaging 2021; 54:1763-1772. [PMID: 34075646 DOI: 10.1002/jmri.27755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 05/12/2021] [Accepted: 05/13/2021] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND Mapping of T1 and T2 relaxation times in cardiac MRI is an invaluable tool for the diagnosis and risk stratification of a wide spectrum of cardiac diseases. PURPOSE To investigate the global and regional reproducibility of native T1 and T2 mapping and to analyze the influence of demographic factors, physiological parameters, slice position, and myocardial regions on reproducibility. STUDY TYPE Prospective single-center cohort-study. POPULATION Fifty healthy volunteers (29 female, 21 male) with a mean age of 39.4 ± 13.7 years. FIELD STRENGTH/SEQUENCE Each volunteer was investigated twice at 1.5 T using a modified look-locker inversion-recovery (MOLLI) sequence (T1 mapping) and a T2-prepared steady-state free precession (SSFP) sequence (T2 mapping). ASSESSMENT Global T1 and T2 values were quantified for the entire left ventricle in three short-axis slices. Regional T1 and T2 values were measured for each myocardial segment and for myocardial segments grouped by slice position and anatomical region. STATISTICAL TESTS Test-retest reproducibility was assessed using intraclass correlation coefficient (ICC) and Bland-Altman statistics. A P value < 0.05 was considered statistically significant. RESULTS Reproducibility was good for global T1 values (ICC 0.88) and excellent for global T2 values (ICC 0.91). Reproducibility of T1 values was excellent (ICC 0.91) for midventricular slice and good for apical (ICC 0.86) and basal slice (ICC 0.81). Reproducibility of T1 mapping values was highest in the septum (ICC 0.90) compared to the anterior (0.81), lateral (0.86), and inferior (0.86) wall. For T2 mapping, reproducibility was good for all slice positions (ICC 0.86 for midventricular, 0.83 for basal, and 0.80 for apical slice). Reproducibility of T2 mapping was significantly lower for the inferior wall (ICC 0.58) than for septum (0.89), anterior (0.85), and lateral (0.87) wall. DATA CONCLUSION Native T1 and T2 mapping has good to excellent reproducibility with significant regional differences. EVIDENCE LEVEL 2 TECHNICAL EFFICACY: Stage 2.
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Affiliation(s)
- Benjamin Böttcher
- Institute of Diagnostic and Interventional Radiology, Paediatric Radiology and Neuroradiology, University Medical Centre Rostock, Rostock, Germany
| | - Roberto Lorbeer
- Department of Radiology, Ludwig-Maximilian University, Munich, Germany
| | - Sophia Stöcklein
- Department of Radiology, Ludwig-Maximilian University, Munich, Germany
| | - Ebba Beller
- Institute of Diagnostic and Interventional Radiology, Paediatric Radiology and Neuroradiology, University Medical Centre Rostock, Rostock, Germany
| | - Cajetan I Lang
- Department of Internal Medicine, Division of Cardiology, University Medical Center Rostock, Rostock, Germany
| | - Marc-André Weber
- Institute of Diagnostic and Interventional Radiology, Paediatric Radiology and Neuroradiology, University Medical Centre Rostock, Rostock, Germany
| | - Felix G Meinel
- Institute of Diagnostic and Interventional Radiology, Paediatric Radiology and Neuroradiology, University Medical Centre Rostock, Rostock, Germany
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35
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Dual SA, Maforo NG, McElhinney DB, Prosper A, Wu HH, Maskatia S, Renella P, Halnon N, Ennis DB. Right Ventricular Function and T1-Mapping in Boys With Duchenne Muscular Dystrophy. J Magn Reson Imaging 2021; 54:1503-1513. [PMID: 34037289 DOI: 10.1002/jmri.27729] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 05/04/2021] [Accepted: 05/05/2021] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Clinical management of boys with Duchenne muscular dystrophy (DMD) relies on in-depth understanding of cardiac involvement, but right ventricular (RV) structural and functional remodeling remains understudied. PURPOSE To evaluate several analysis methods and identify the most reliable one to measure RV pre- and postcontrast T1 (RV-T1) and to characterize myocardial remodeling in the RV of boys with DMD. STUDY TYPE Prospective. POPULATION Boys with DMD (N = 27) and age-/sex-matched healthy controls (N = 17) from two sites. FIELD STRENGTH/SEQUENCE 3.0 T using balanced steady state free precession, motion-corrected phase sensitive inversion recovery and modified Look-Locker inversion recovery sequences. ASSESSMENT Biventricular mass (Mi), end-diastolic volume (EDVi) and ejection fraction (EF) assessment, tricuspid annular excursion (TAE), late gadolinium enhancement (LGE), pre- and postcontrast myocardial T1 maps. The RV-T1 reliability was assessed by three observers in four different RV regions of interest (ROI) using intraclass correlation (ICC). STATISTICAL TESTS The Wilcoxon rank sum test was used to compare RV-T1 differences between DMD boys with negative LGE(-) or positive LGE(+) and healthy controls. Additionally, correlation of precontrast RV-T1 with functional measures was performed. A P-value <0.05 was considered statistically significant. RESULTS A 1-pixel thick RV circumferential ROI proved most reliable (ICC > 0.91) for assessing RV-T1. Precontrast RV-T1 was significantly higher in boys with DMD compared to controls. Both LGE(-) and LGE(+) boys had significantly elevated precontrast RV-T1 compared to controls (1543 [1489-1597] msec and 1550 [1402-1699] msec vs. 1436 [1399-1473] msec, respectively). Compared to healthy controls, boys with DMD had preserved RVEF (51.8 [9.9]% vs. 54.2 [7.2]%, P = 0.31) and significantly reduced RVMi (29.8 [9.7] g vs. 48.0 [15.7] g), RVEDVi (69.8 [29.7] mL/m2 vs. 89.1 [21.9] mL/m2 ), and TAE (22.0 [3.2] cm vs. 26.0 [4.7] cm). Significant correlations were found between precontrast RV-T1 and RVEF (β = -0.48%/msec) and between LV-T1 and LVEF (β = -0.51%/msec). DATA CONCLUSION Precontrast RV-T1 is elevated in boys with DMD compared to healthy controls and is negatively correlated with RVEF. LEVEL OF EVIDENCE 1 TECHNICAL EFFICACY: Stage 2.
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Affiliation(s)
- Seraina A Dual
- Department of Radiology, Stanford University, Palo Alto, California, USA.,Department of Cardiothoracic Surgery, Stanford University, Palo Alto, California, USA.,Cardiovascular Institute, Stanford University, Palo Alto, California, USA
| | - Nyasha G Maforo
- Physics and Biology in Medicine Interdepartmental Program, University of California, Los Angeles, California, USA.,Department of Radiological Sciences, University of California, Los Angeles, California, USA
| | - Doff B McElhinney
- Department of Cardiothoracic Surgery, Stanford University, Palo Alto, California, USA
| | - Ashley Prosper
- Department of Radiological Sciences, University of California, Los Angeles, California, USA
| | - Holden H Wu
- Physics and Biology in Medicine Interdepartmental Program, University of California, Los Angeles, California, USA.,Department of Radiological Sciences, University of California, Los Angeles, California, USA
| | - Shiraz Maskatia
- Department of Pediatrics, Stanford University, Palo Alto, California, USA.,Maternal & Child Health Research Institute, Stanford University, Palo Alto, California, USA
| | - Pierangelo Renella
- Department of Radiological Sciences, University of California, Los Angeles, California, USA.,Children's hospital Orange County, University of California, Irvine, California, USA
| | - Nancy Halnon
- Department of Medicine (Cardiology), University of California, Los Angeles, California, USA
| | - Daniel B Ennis
- Department of Radiology, Stanford University, Palo Alto, California, USA.,Cardiovascular Institute, Stanford University, Palo Alto, California, USA.,Maternal & Child Health Research Institute, Stanford University, Palo Alto, California, USA
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Meloni A, Martini N, Positano V, D'Angelo G, Barison A, Todiere G, Grigoratos C, Barra V, Pistoia L, Gargani L, Ripoli A, Pepe A. Myocardial T1 Values at 1.5 T: Normal Values for General Electric Scanners and Sex-Related Differences. J Magn Reson Imaging 2021; 54:1486-1500. [PMID: 33848021 DOI: 10.1002/jmri.27639] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 03/27/2021] [Accepted: 03/30/2021] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND No data are available about normal ranges for native T1 in human myocardium using General Electric (GE) scanners. PURPOSE To establish normal ranges for myocardial T1 values and evaluate regional variability and the influence of physiological factors. STUDY TYPE Prospective. SUBJECTS One hundred healthy volunteers with normal electrocardiogram, no cardiovascular/systemic diseases, or risk factors (age range: 20-70 years; 50 females). FIELD STRENGTH/SEQUENCE 1.5 T/Steady-state free precession cine and a modified Look-Locker inversion recovery sequence in diastole (also in systole for 61 volunteers). ASSESSMENT Image analysis was performed by operators with >10 years experience in cardiac MR using commercially available software. T1 values were calculated for 16 myocardial segments, and the global value was the mean. Segments were grouped according to circumferential region (anterior, septal, inferior, and lateral) and to level (basal, medial, apical). Twenty images were analyzed twice by the same operator and by a different operator to assess reproducibility. STATISTICAL TESTS Independent-samples t-test or Mann-Whitney test; paired sample t-test or Wilcoxon signed-rank test; one-way repeated measures ANOVA or Friedman tests; Pearson's or Spearman's correlation. Reproducibility evaluated using coefficient of variability (CoV). RESULTS Due to artifacts and/or partial-volume effects, 45/1600 (2.8%) segments were excluded. A good intra- and inter-operator reproducibility was detected (CoV < 5%). There were significant differences in segmental T1 values (P < 0.05). A significant circumferential variability was present (P < 0.05): the mean native T1 value over the lateral region was significantly lower than in the other three regions. An increasing gradient from basal to apical slices was detected (P < 0.05). Segmental and global T1 values were not associated with age (range P = 0.052-0.911) but were significantly lower in males than in females (global: 993 ± 32 vs. 1037 ± 27 ms; P < 0.05) and significantly correlated with heart rate (range R for segmental values = 0.247-0.920; P < 0.05). Almost all segmental T1 values were inversely correlated with wall thickness (R from -0.233 to -0.514; P < 0.05). Systolic T1 values were significantly lower than diastolic values in basal anteroseptal segment, in all medial segments except the inferior one, and in all apical segments (P < 0.05). DATA CONCLUSION Myocardial T1 values differ among myocardial regions, are influenced by sex, heart rate, and wall thickness and vary according to the cardiac cycle in healthy adults. LEVEL OF EVIDENCE 2 TECHNICAL EFFICACY: Stage 2.
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Affiliation(s)
- Antonella Meloni
- Magnetic Resonance Imaging Unit, Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy.,Bioengineering Unit, Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy
| | - Nicola Martini
- Magnetic Resonance Imaging Unit, Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy.,Bioengineering Unit, Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy
| | - Vincenzo Positano
- Magnetic Resonance Imaging Unit, Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy.,Bioengineering Unit, Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy
| | - Gennaro D'Angelo
- Institute of Clinical Physiology, National Research Council, Pisa, Italy
| | - Andrea Barison
- Division of Cardiology and Cardiovascular Medicine, Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy
| | - Giancarlo Todiere
- Division of Cardiology and Cardiovascular Medicine, Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy
| | - Chrysanthos Grigoratos
- Division of Cardiology and Cardiovascular Medicine, Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy
| | - Valerio Barra
- Magnetic Resonance Imaging Unit, Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy
| | - Laura Pistoia
- Magnetic Resonance Imaging Unit, Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy
| | - Luna Gargani
- Institute of Clinical Physiology, National Research Council, Pisa, Italy
| | - Andrea Ripoli
- Bioengineering Unit, Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy
| | - Alessia Pepe
- Magnetic Resonance Imaging Unit, Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy
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37
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Markousis-Mavrogenis G, Sfikakis PP, Koutsogeorgopoulou L, Dimitroulas T, Katsifis G, Giannakopoulou A, Voulgari P, Kolovou G, Kitas GD, Mavrogeni SI. Cardiovascular Magnetic Resonance Reveals Cardiac Pathophysiology in Autoimmune Rheumatic Diseases. Mediterr J Rheumatol 2021; 32:15-20. [PMID: 34386698 PMCID: PMC8314875 DOI: 10.31138/mjr.32.1.15] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/26/2020] [Accepted: 01/15/2020] [Indexed: 02/06/2023] Open
Abstract
Background/Aims The high incidence of cardiovascular disease (CVD) in patients with autoimmune rheumatic diseases (ARDs) is the main driver towards increased mortality in this patient group. Cardiovascular magnetic resonance (CMR) can non-invasively and robustly detect CVD in ARD patients at an early stage of development. The review summarises the diagnostic information provided by CMR in ARD patients. Summary CMR uses a strong magnetic field combined with radio-frequency pulses (pulse sequences) to generate images. Firstly, balanced steady-state free precession (bSSFP) can be used for evaluating cardiac anatomy, mass, wall motion, atrial/ventricular function. Secondly, T2-weighted imaging (T2-W) can be used for oedema detection, which appears as a high signal intensity area on STIR (short tau inversion recovery) images. T2 mapping is a newer T2-W technique that can provide more optimal identification of myocardial oedema. Lastly, late gadolinium enhanced (LGE) T1-W images, taken 15 min. after injection of contrast agent, allow the detection of myocardial replacement fibrosis, which appears as a bright area in a background of black myocardium. However, LGE has inherent disadvantages for the assessment of diffuse myocardial fibrosis. Therefore, T1 mapping and extracellular volume fraction (ECV) have been developed to quantify diffuse myocardial fibrosis. Results Although multicentre studies are still missing, the CMR parameters have been extensively applied for the identification of oedema/fibrosis and treatment decision making in ARDs. Conclusions Tissue characterisation with CMR allows early and robust identification of CVD in ARD patients and contributes to personalized management in the patients.
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Affiliation(s)
| | - Petros P Sfikakis
- Joint Rheumatology, Laikon Hospital, Athens, Greece.,Department of Pathophysiology, Laikon Hospital, National Kapodistrian University of Athens, Athens, Greece
| | - Loukia Koutsogeorgopoulou
- Department of Pathophysiology, Laikon Hospital, National Kapodistrian University of Athens, Athens, Greece
| | - Theodoros Dimitroulas
- Department of Internal Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | | | | | | | | | - George D Kitas
- Arthritis Research UK Epidemiology Unit, Manchester University, Manchester, United Kingdom
| | - Sophie I Mavrogeni
- Onassis Cardiac Surgery Center, Athens, Greece.,Department of Pathophysiology, Laikon Hospital, National Kapodistrian University of Athens, Athens, Greece
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Pediatric Myocardial T1 and T2 Value Associations with Age and Heart Rate at 1.5 T. Pediatr Cardiol 2021; 42:269-277. [PMID: 33006645 DOI: 10.1007/s00246-020-02479-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 09/26/2020] [Indexed: 10/23/2022]
Abstract
The objective of the study was to determine normal global left ventricular reference values for T1 and T2 in children. This is a retrospective study that included healthy subjects, age 5-19 years, who underwent CMR for the indication of pectus excavatum from 2018 to 2019. Linear regression models were used to determine associations of native T1 and T2 values to heart rate, age, and other CMR parameters. 102 patients with a mean age of 14.0 ± 2.4 years were included (range 5.4-18.8). 87 (85%) were males and 15 (15%) were females. The mean global T1 was 1018 ± 25 ms and the mean T2 was 53 ± 3 ms. T1 was negatively correlated with age (r = - 0.39, p < 0.001) and positively correlated with heart rate (r = 0.32, p < 0.001) by univariate analysis. Multivariable analysis showed that age and heart rate were independently associated with T1. T2 demonstrated a weak negative correlation with age (r = - 0.20, p = 0.047) and no correlation with heart rate. There was no difference in T1 (p = 0.23) or T2 (p = 0.52) between genders. This study reports normal pediatric T1 and T2 values at a 1.5 Tesla scanner. T1 was dependent on age and heart rate, while T2 was less dependent on age with no correlation with heart rate.
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39
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Mavrogeni SI, Bacopoulou F, Markousis-Mavrogenis G, Giannakopoulou A, Kariki O, Vartela V, Kolovou G, Charmandari E, Chrousos G. Cardiovascular Magnetic Resonance as Pathophysiologic Tool in Diabetes Mellitus. Front Endocrinol (Lausanne) 2021; 12:672302. [PMID: 34194393 PMCID: PMC8237858 DOI: 10.3389/fendo.2021.672302] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 05/12/2021] [Indexed: 01/02/2023] Open
Abstract
Diabetes mellitus can independently contribute to cardiovascular disease and represents a severe risk factor for premature development of cardiovascular disease. A three-fold higher mortality than the general population has been observed in type 1 diabetes mellitus whereas a two- to four-fold increased probability to develop cardiovascular disease has been observed in type 2 diabetes mellitus. Cardiovascular magnetic resonance, a non-radiative modality, is superior to all other modalities in detecting myocardial infarction. The main cardiovascular magnetic resonance sequences used include a) balanced steady-state free precession (bSSFP) for function evaluation; b) T2-W for oedema detection; c) T1 W for ischemia detection during adenosine stress; and d) late gadolinium enhanced T1-W images (LGE), evaluated 15 min after injection of paramagnetic contrast agent gadolinium, which permit the diagnosis of replacement fibrosis, which appears white in the middle of suppressed, nulled myocardium. Although LGE is the technique of choice for diagnosis of replacement fibrosis, it cannot assess diffuse myocardial fibrosis. The application of T1 mapping (native or pre contrast and post contrast) allows identification of diffuse myocardial fibrosis, which is not detectable my other means. Native T1 and Contrast-enhanced T1 mapping are involved in the extracellular volume fraction (ECV) calculation. Recently, 1H-cardiovascular magnetic resonance spectroscopy has been applied to calculate the amount of myocardial triglycerides, but at the moment it is not part of the routine assessment of diabetes mellitus. The multifaceted nature of cardiovascular magnetic resonance has the great potential of concurrent evaluation of function and myocardial ischemia/fibrosis in the same examination and represents an indispensable tool for accurate diagnosis of cardiovascular disease in diabetes mellitus.
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Affiliation(s)
- Sophie I. Mavrogeni
- Department of Cardiology, Onassis Cardiac Surgery Center, Kallithea, Greece
- University Research Institute of Maternal and Child Health and Precision Medicine, and UNESCO Chair on Adolescent Health Care, National and Kapodistrian University of Athens, Aghia Sophia Children’s Hospital, Athens, Greece
- *Correspondence: Sophie I. Mavrogeni,
| | - Flora Bacopoulou
- University Research Institute of Maternal and Child Health and Precision Medicine, and UNESCO Chair on Adolescent Health Care, National and Kapodistrian University of Athens, Aghia Sophia Children’s Hospital, Athens, Greece
| | | | | | - Ourania Kariki
- Department of Cardiology, Onassis Cardiac Surgery Center, Kallithea, Greece
| | - Vasiliki Vartela
- Department of Cardiology, Onassis Cardiac Surgery Center, Kallithea, Greece
| | - Genovefa Kolovou
- Department of Cardiology, Onassis Cardiac Surgery Center, Kallithea, Greece
| | - Evangelia Charmandari
- Division of Endocrinology, Metabolism and Diabetes, First Department of Pediatrics, School of Medicine, National and Kapodistrian University of Athens, Aghia Sophia Children’s Hospital, Athens, Greece
- Division of Endocrinology and Metabolism, Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - George Chrousos
- University Research Institute of Maternal and Child Health and Precision Medicine, and UNESCO Chair on Adolescent Health Care, National and Kapodistrian University of Athens, Aghia Sophia Children’s Hospital, Athens, Greece
- Division of Endocrinology and Metabolism, Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
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Kawel-Boehm N, Hetzel SJ, Ambale-Venkatesh B, Captur G, Francois CJ, Jerosch-Herold M, Salerno M, Teague SD, Valsangiacomo-Buechel E, van der Geest RJ, Bluemke DA. Reference ranges ("normal values") for cardiovascular magnetic resonance (CMR) in adults and children: 2020 update. J Cardiovasc Magn Reson 2020; 22:87. [PMID: 33308262 PMCID: PMC7734766 DOI: 10.1186/s12968-020-00683-3] [Citation(s) in RCA: 229] [Impact Index Per Article: 57.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 10/26/2020] [Indexed: 01/06/2023] Open
Abstract
Cardiovascular magnetic resonance (CMR) enables assessment and quantification of morphological and functional parameters of the heart, including chamber size and function, diameters of the aorta and pulmonary arteries, flow and myocardial relaxation times. Knowledge of reference ranges ("normal values") for quantitative CMR is crucial to interpretation of results and to distinguish normal from disease. Compared to the previous version of this review published in 2015, we present updated and expanded reference values for morphological and functional CMR parameters of the cardiovascular system based on the peer-reviewed literature and current CMR techniques. Further, databases and references for deep learning methods are included.
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Affiliation(s)
- Nadine Kawel-Boehm
- Department of Radiology, Kantonsspital Graubuenden, Loestrasse 170, 7000, Chur, Switzerland
- Institute for Diagnostic, Interventional and Pediatric Radiology (DIPR), Bern University Hospital, University of Bern, Freiburgstrasse 10, 3010, InselspitalBern, Switzerland
| | - Scott J Hetzel
- Department of Biostatistics and Medical Informatics, University of Wisconsin, 610 Walnut St, Madison, WI, 53726, USA
| | - Bharath Ambale-Venkatesh
- Department of Radiology, Johns Hopkins University, 600 N Wolfe Street, Baltimore, MD, 21287, USA
| | - Gabriella Captur
- MRC Unit of Lifelong Health and Ageing At UCL, 5-19 Torrington Place, Fitzrovia, London, WC1E 7HB, UK
- Inherited Heart Muscle Conditions Clinic, Royal Free Hospital NHS Foundation Trust, Hampstead, London, NW3 2QG, UK
| | - Christopher J Francois
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, 600 Highland Avenue, Madison, WI, 53792, USA
| | - Michael Jerosch-Herold
- Department of Radiology, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA
| | - Michael Salerno
- Cardiovascular Division, University of Virginia Health System, 1215 Lee Street, Charlottesville, VA, 22908, USA
| | - Shawn D Teague
- Department of Radiology, National Jewish Health, 1400 Jackson St, Denver, CO, 80206, USA
| | - Emanuela Valsangiacomo-Buechel
- Division of Paediatric Cardiology, University Children's Hospital Zurich, Steinwiesstrasse 75, 8032, Zurich, Switzerland
| | - Rob J van der Geest
- Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333ZA, Leiden, The Netherlands
| | - David A Bluemke
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, 600 Highland Avenue, Madison, WI, 53792, USA.
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Hassan S, Barrett CJ, Crossman DJ. Imaging tools for assessment of myocardial fibrosis in humans: the need for greater detail. Biophys Rev 2020; 12:969-987. [PMID: 32705483 PMCID: PMC7429810 DOI: 10.1007/s12551-020-00738-w] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 07/08/2020] [Indexed: 02/06/2023] Open
Abstract
Myocardial fibrosis is recognized as a key pathological process in the development of cardiac disease and a target for future therapeutics. Despite this recognition, the assessment of fibrosis is not a part of routine clinical practice. This is primarily due to the difficulties in obtaining an accurate assessment of fibrosis non-invasively. Moreover, there is a clear discrepancy between the understandings of myocardial fibrosis clinically where fibrosis is predominately studied with comparatively low-resolution medical imaging technologies like MRI compared with the basic science laboratories where fibrosis can be visualized invasively with high resolution using molecularly specific fluorescence microscopes at the microscopic and nanoscopic scales. In this article, we will first review current medical imaging technologies for assessing fibrosis including echo and MRI. We will then highlight the need for greater microscopic and nanoscopic analysis of human tissue and how this can be addressed through greater utilization of human tissue available through endomyocardial biopsies and cardiac surgeries. We will then describe the relatively new field of molecular imaging that promises to translate research findings to the clinical practice by non-invasively monitoring the molecular signature of fibrosis in patients.
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Affiliation(s)
- Summer Hassan
- Department of Physiology, University of Auckland, Auckland, New Zealand
- Auckland City Hospital, Auckland District Health Board, Auckland, New Zealand
| | - Carolyn J Barrett
- Department of Physiology, University of Auckland, Auckland, New Zealand
| | - David J Crossman
- Department of Physiology, University of Auckland, Auckland, New Zealand.
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42
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Tsai CC, Ng SH, Chen YL, Juan YH, Wang CH, Lin G, Chien CW, Lin YC, Lin YC, Huang YC, Huang PC, Wang JJ. T1 and T2∗ relaxation time in the parcellated myocardium of healthy Taiwanese participants: A single center study. Biomed J 2020; 44:S132-S143. [PMID: 35735082 PMCID: PMC9039095 DOI: 10.1016/j.bj.2020.08.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 08/11/2020] [Accepted: 08/24/2020] [Indexed: 01/08/2023] Open
Abstract
Background Quantitative maps from cardiac MRI provide objective information for myocardial tissue. The study aimed to report the T1 and T2∗ relaxation time and its relationship with clinical parameters in healthy Taiwanese participants. Methods Ninety-three participants were enrolled between 2014 and 2016 (Males/Females: 43/50; age: 49.7 ± 11.3/49.9 ± 10.3). T1 and T2∗ weighted images were obtained by MOLLI recovery and 3D fully flow compensated gradient echo sequences with a 3T MR scanner, respectively. The T1 map of the myocardium was parcellated into 16 partitions from the American Heart Association. The septal part of basal, mid-cavity, and apical view was selected for the T2∗ map. The difference of quantitative map by sex and age groups were evaluated by Student's TTEST and ANOVA, respectively. The relationship between T1, T2∗ map, and clinical parameters, such as ejection fraction, pulse rate, and blood pressures, were evaluated with partial correlation by controlling BMI and age. Results Male participants decreased T1 relaxation time in partitions which located in the mid-cavity and apical before 55 years old compared with females (Male/Female: 1143.1.4 ± 72.0–1191.1 ± 37.0/1180.1 ± 54.5–1326.1 ± 113.3 msec, p < 0.01). For female participants, T1 relaxation time was correlated negatively with systolic pressure (p < 0.01) and pulse rate (p < 0.01) before 45 years old. Besides, T1 and T2∗ relaxation time were positively and negatively correlated with ejection fraction and pulse rate after 45 years old in male participants, respectively. Decreased T2∗ relaxation time could be noticed in participants after 45 years old compared with youngers (26.0 ± 6.5/21.9 ± 8.0 msec; 25.2 ± 5.0/21.6 ± 7.2 msec, p < 0.05). Conclusion Reference T1 and T2∗ relaxation time from cardiac MRI in healthy Taiwanese participants were provided with sex and age-dependent manners. The relationship between clinical parameters and T1 or T2∗ relaxation time was also established and could be further investigated for its potential application in healthy/sub-healthy participants.
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43
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Duchenne and Becker muscular dystrophy carriers: Evidence of cardiomyopathy by exercise and cardiac MRI testing. Int J Cardiol 2020; 316:257-265. [PMID: 32473283 DOI: 10.1016/j.ijcard.2020.05.052] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 05/14/2020] [Accepted: 05/15/2020] [Indexed: 01/16/2023]
Abstract
BACKGROUND Varied detection methods have resulted in conflicting reports on the prevalence of cardiac disease in Duchenne and Becker muscular dystrophy carriers (MDC). METHODS We performed a prospective cohort study of 77 genetically-confirmed MDC mothers, 22 non-carrier mothers, and 25 controls. All participants underwent Cardiopulmonary Exercise Testing (CPET) and Cardiac Magnetic Resonance imaging (CMR). RESULTS 25% of carriers had ventricular ectopy in recovery of exercise (RecVE) as compared to 1 non-carrier and no controls (p = .003). No difference in age or maximal oxygen consumption was noted. 11 carriers had abnormal (<55%) left ventricular ejection fraction by CMR. Evidence of late gadolinium enhancement (LGE) was noted in 48% of MDC, 1 non-carrier patient and no control subjects (p < .0001). Subset analysis of LGE+ and LGE- subjects revealed differences in age (44.1 v 38.6 yrs.; p = .005), presence of RecVE, (38.9% v 10.5%, p = .004), and high serum creatine kinase (CK) (> 289 U/l; 52.8% v 31.6%, p = .065). CONCLUSION We describe the prevalence of disease using CPET and CMR in genetically-proven MDC. 49% of carriers had fibrosis, opposed to 5% of non-carriers, highlighting the importance of genetic testing in this population. Despite cardiomyopathy, functional assessment by treadmill was normal, illustrating the discrepancy in cardiac and skeletal muscle impacts. Age, RecVE and serum CK appear to have an important role in predicting cardiomyopathy. Serum CK levels suggest that a systemic higher global disease severity and not tissue heterogeneity may be the etiology for greater cardiac disease and relatively spared skeletal muscle disease in this population. Clinical Trial Registration https://clinicaltrials.gov/ct2/show/NCT02972580?term=mendell&cond=Duchenne+Muscular+Dystrophy&rank=5; ClinicalTrials.gov Identifier: NCT02972580.
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44
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Snel GJH, van den Boomen M, Hernandez LM, Nguyen CT, Sosnovik DE, Velthuis BK, Slart RHJA, Borra RJH, Prakken NHJ. Cardiovascular magnetic resonance native T 2 and T 2* quantitative values for cardiomyopathies and heart transplantations: a systematic review and meta-analysis. J Cardiovasc Magn Reson 2020; 22:34. [PMID: 32393281 PMCID: PMC7212597 DOI: 10.1186/s12968-020-00627-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 04/16/2020] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND The clinical application of cardiovascular magnetic resonance (CMR) T2 and T2* mapping is currently limited as ranges for healthy and cardiac diseases are poorly defined. In this meta-analysis we aimed to determine the weighted mean of T2 and T2* mapping values in patients with myocardial infarction (MI), heart transplantation, non-ischemic cardiomyopathies (NICM) and hypertension, and the standardized mean difference (SMD) of each population with healthy controls. Additionally, the variation of mapping outcomes between studies was investigated. METHODS The PRISMA guidelines were followed after literature searches on PubMed and Embase. Studies reporting CMR T2 or T2* values measured in patients were included. The SMD was calculated using a random effects model and a meta-regression analysis was performed for populations with sufficient published data. RESULTS One hundred fifty-four studies, including 13,804 patient and 4392 control measurements, were included. T2 values were higher in patients with MI, heart transplantation, sarcoidosis, systemic lupus erythematosus, amyloidosis, hypertrophic cardiomyopathy (HCM), dilated cardiomyopathy (DCM) and myocarditis (SMD of 2.17, 1.05, 0.87, 1.39, 1.62, 1.95, 1.90 and 1.33, respectively, P < 0.01) compared with controls. T2 values in iron overload patients (SMD = - 0.54, P = 0.30) and Anderson-Fabry disease patients (SMD = 0.52, P = 0.17) did both not differ from controls. T2* values were lower in patients with MI and iron overload (SMD of - 1.99 and - 2.39, respectively, P < 0.01) compared with controls. T2* values in HCM patients (SMD = - 0.61, P = 0.22), DCM patients (SMD = - 0.54, P = 0.06) and hypertension patients (SMD = - 1.46, P = 0.10) did not differ from controls. Multiple CMR acquisition and patient demographic factors were assessed as significant covariates, thereby influencing the mapping outcomes and causing variation between studies. CONCLUSIONS The clinical utility of T2 and T2* mapping to distinguish affected myocardium in patients with cardiomyopathies or heart transplantation from healthy myocardium seemed to be confirmed based on this meta-analysis. Nevertheless, variation of mapping values between studies complicates comparison with external values and therefore require local healthy reference values to clinically interpret quantitative values. Furthermore, disease differentiation seems limited, since changes in T2 and T2* values of most cardiomyopathies are similar.
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Affiliation(s)
- G J H Snel
- Department of Radiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands.
| | - M van den Boomen
- Department of Radiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, 149 13th Street, Charlestown, MA, 02129, USA
| | - L M Hernandez
- Department of Radiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
| | - C T Nguyen
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, 149 13th Street, Charlestown, MA, 02129, USA
- Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, 149 13th Street, Charlestown, MA, 02129, USA
| | - D E Sosnovik
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, 149 13th Street, Charlestown, MA, 02129, USA
- Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, 149 13th Street, Charlestown, MA, 02129, USA
- Division of Health Sciences and Technology, Harvard-MIT, 7 Massachusetts Avenue, Cambridge, MA, 02139, USA
| | - B K Velthuis
- Department of Radiology, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands
| | - R H J A Slart
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
- Department of Biomedical Photonic Imaging, University of Twente, Dienstweg 1, 7522 ND, Enschede, The Netherlands
| | - R J H Borra
- Department of Radiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
| | - N H J Prakken
- Department of Radiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
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Captur G, Bhandari A, Brühl R, Ittermann B, Keenan KE, Yang Y, Eames RJ, Benedetti G, Torlasco C, Ricketts L, Boubertakh R, Fatih N, Greenwood JP, Paulis LEM, Lawton CB, Bucciarelli-Ducci C, Lamb HJ, Steeds R, Leung SW, Berry C, Valentin S, Flett A, de Lange C, DeCobelli F, Viallon M, Croisille P, Higgins DM, Greiser A, Pang W, Hamilton-Craig C, Strugnell WE, Dresselaers T, Barison A, Dawson D, Taylor AJ, Mongeon FP, Plein S, Messroghli D, Al-Mallah M, Grieve SM, Lombardi M, Jang J, Salerno M, Chaturvedi N, Kellman P, Bluemke DA, Nezafat R, Gatehouse P, Moon JC. T 1 mapping performance and measurement repeatability: results from the multi-national T 1 mapping standardization phantom program (T1MES). J Cardiovasc Magn Reson 2020; 22:31. [PMID: 32375896 PMCID: PMC7204222 DOI: 10.1186/s12968-020-00613-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Accepted: 03/02/2020] [Indexed: 04/03/2023] Open
Abstract
BACKGROUND The T1 Mapping and Extracellular volume (ECV) Standardization (T1MES) program explored T1 mapping quality assurance using a purpose-developed phantom with Food and Drug Administration (FDA) and Conformité Européenne (CE) regulatory clearance. We report T1 measurement repeatability across centers describing sequence, magnet, and vendor performance. METHODS Phantoms batch-manufactured in August 2015 underwent 2 years of structural imaging, B0 and B1, and "reference" slow T1 testing. Temperature dependency was evaluated by the United States National Institute of Standards and Technology and by the German Physikalisch-Technische Bundesanstalt. Center-specific T1 mapping repeatability (maximum one scan per week to minimum one per quarter year) was assessed over mean 358 (maximum 1161) days on 34 1.5 T and 22 3 T magnets using multiple T1 mapping sequences. Image and temperature data were analyzed semi-automatically. Repeatability of serial T1 was evaluated in terms of coefficient of variation (CoV), and linear mixed models were constructed to study the interplay of some of the known sources of T1 variation. RESULTS Over 2 years, phantom gel integrity remained intact (no rips/tears), B0 and B1 homogenous, and "reference" T1 stable compared to baseline (% change at 1.5 T, 1.95 ± 1.39%; 3 T, 2.22 ± 1.44%). Per degrees Celsius, 1.5 T, T1 (MOLLI 5s(3s)3s) increased by 11.4 ms in long native blood tubes and decreased by 1.2 ms in short post-contrast myocardium tubes. Agreement of estimated T1 times with "reference" T1 was similar across Siemens and Philips CMR systems at both field strengths (adjusted R2 ranges for both field strengths, 0.99-1.00). Over 1 year, many 1.5 T and 3 T sequences/magnets were repeatable with mean CoVs < 1 and 2% respectively. Repeatability was narrower for 1.5 T over 3 T. Within T1MES repeatability for native T1 was narrow for several sequences, for example, at 1.5 T, Siemens MOLLI 5s(3s)3s prototype number 448B (mean CoV = 0.27%) and Philips modified Look-Locker inversion recovery (MOLLI) 3s(3s)5s (CoV 0.54%), and at 3 T, Philips MOLLI 3b(3s)5b (CoV 0.33%) and Siemens shortened MOLLI (ShMOLLI) prototype 780C (CoV 0.69%). After adjusting for temperature and field strength, it was found that the T1 mapping sequence and scanner software version (both P < 0.001 at 1.5 T and 3 T), and to a lesser extent the scanner model (P = 0.011, 1.5 T only), had the greatest influence on T1 across multiple centers. CONCLUSION The T1MES CE/FDA approved phantom is a robust quality assurance device. In a multi-center setting, T1 mapping had performance differences between field strengths, sequences, scanner software versions, and manufacturers. However, several specific combinations of field strength, sequence, and scanner are highly repeatable, and thus, have potential to provide standardized assessment of T1 times for clinical use, although temperature correction is required for native T1 tubes at least.
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Affiliation(s)
- Gabriella Captur
- UCL Institute of Cardiovascular Science, University College London, Gower Street, London, WC1E 6BT UK
- UCL MRC Unit for Lifelong Health and Ageing, University College London, 1-19 Torrington Place, London, WC1E 7BH UK
- Cardiology Department, The Royal Free Hospital, Centre for Inherited Heart Muscle Conditions, Pond Street, Hampstead, London, NW3 2QG UK
| | - Abhiyan Bhandari
- UCL Medical School, University College London, Bloomsbury Campus, Gower Street, London, WC1E 6BT UK
| | - Rüdiger Brühl
- Physikalisch-Technische Bundesanstalt (PTB), Abbestr. 2–12, D-10587 Berlin, Germany
| | - Bernd Ittermann
- Physikalisch-Technische Bundesanstalt (PTB), Abbestr. 2–12, D-10587 Berlin, Germany
| | - Kathryn E. Keenan
- National Institute of Standards and Technology (NIST), Boulder, MS 818.03, 325 Broadway, Boulder, CO USA
| | - Ye Yang
- Department of Cardiology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, 310016 Zhejiang People’s Republic of China
| | - Richard J. Eames
- Department of Physics, Imperial College London, Prince Consort Rd, London, SW7 2BB UK
| | - Giulia Benedetti
- Department of Radiology, Guys and St Thomas NHS Foundation Trust, London, UK
| | - Camilla Torlasco
- University of Milan-Bicocca, Piazza dell’Ateneo Nuovo 1, 20100 Milan, Italy
| | - Lewis Ricketts
- UCL Medical School, University College London, Bloomsbury Campus, Gower Street, London, WC1E 6BT UK
| | - Redha Boubertakh
- Cardiovascular Biomedical Research Unit, Queen Mary University of London, London, E1 4NS UK
| | - Nasri Fatih
- UCL Institute of Cardiovascular Science, University College London, Gower Street, London, WC1E 6BT UK
- UCL MRC Unit for Lifelong Health and Ageing, University College London, 1-19 Torrington Place, London, WC1E 7BH UK
| | - John P. Greenwood
- Multidisciplinary Cardiovascular Research Center & Division of Biomedical Imaging, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Leonie E. M. Paulis
- Department of Radiology & Nuclear Medicine, Maastricht University Medical Centre, PO Box 5800, 6202 AZ Maastricht, The Netherlands
| | - Chris B. Lawton
- Bristol Heart Institute, National Institute of Health Research (NIHR) Biomedical Research Centre, University Hospitals Bristol NHS Foundation Trust and University of Bristol, Upper Maudlin St, Bristol, BS2 8HW UK
| | - Chiara Bucciarelli-Ducci
- Bristol Heart Institute, National Institute of Health Research (NIHR) Biomedical Research Centre, University Hospitals Bristol NHS Foundation Trust and University of Bristol, Upper Maudlin St, Bristol, BS2 8HW UK
| | - Hildo J. Lamb
- Department of Radiology, Leiden University Medical Centre, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
| | - Richard Steeds
- University Hospitals Birmingham NHS Foundation Trust, Edgbaston, Birmingham, B15 2TH UK
| | - Steve W. Leung
- UK Albert B. Chandler Hospital - Pavilion G, Gill Heart & Vascular Institute, Lexington, KY 40536 USA
| | - Colin Berry
- Institute of Cardiovascular and Medical Sciences, RC309 Level C3, Bhf Gcrc, Glasgow, Scotland G12 8TA UK
| | - Sinitsyn Valentin
- Department of Multidisciplinary Clinical Studies, Lomonosov Moscow State University, Moscow, Russia
| | - Andrew Flett
- University Hospital Southampton Foundation Trust, Tremona Road, Southampton, Hampshire SO16 6YD UK
| | - Charlotte de Lange
- Department of Radiology and Nuclear Medicine, Oslo University Hospital, Sognsvannsveien 20, 0372 Oslo, Norway
| | | | - Magalie Viallon
- INSA, CNRS UMR 5520, INSERM U1206, University of Lyon, UJM-Saint-Etienne, CREATIS, F-42023 Saint-Etienne, France
| | - Pierre Croisille
- Department of Radiology, University Hospital Saint-Etienne, Saint-Etienne, France
| | - David M. Higgins
- Philips, Philips Centre, Unit 3, Guildford Business Park, Guildford, Surrey GU2 8XG UK
| | | | - Wenjie Pang
- Resonance Health, 278 Stirling Highway, Claremont, WA 6010 Australia
| | - Christian Hamilton-Craig
- The Prince Charles Hospital, Griffith University and University of Queensland, Brisbane, Australia
| | - Wendy E. Strugnell
- The Prince Charles Hospital, Griffith University and University of Queensland, Brisbane, Australia
| | - Tom Dresselaers
- Department of Radiology, Universitair Ziekenhuis Leuven, Leuven, UZ Belgium
| | | | - Dana Dawson
- School of Medicine and Dentistry, University of Aberdeen, Polwarth Building, Foresterhill, Aberdeen, AB25 2ZD Scotland, UK
| | - Andrew J. Taylor
- Department of Cardiovascular Medicine, Alfred Hospital, Melbourne, Australia
- Baker Heart and Diabetes Institute, Melbourne, Australia
- Department of Medicine, Monash University, Melbourne, Australia
| | - François-Pierre Mongeon
- Department of Medicine, Montreal Heart Institute and Université de Montréal, 5000 Bélanger Street, Montreal, QC H1T 1C8 Canada
| | - Sven Plein
- Multidisciplinary Cardiovascular Research Center & Division of Biomedical Imaging, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Daniel Messroghli
- Department of Internal Medicine – Cardiology, Deutsches Herzzentrum Berlin, Berlin, Germany
- Department of Internal Medicine and Cardiology, Charité - Universitätsmedizin Berlin, Campus Virchow Klinikum, Berlin, Germany
| | - Mouaz Al-Mallah
- King Abdulaziz Cardiac Center (KACC) (Riyadh), National Guard Health Affairs, Riyadh, Kingdom of Saudi Arabia
| | - Stuart M. Grieve
- The University of Sydney School of Medicine, Camperdown, NSW 2006 Australia
| | - Massimo Lombardi
- I.R.C.C.S., Policlinico San Donato, Piazza Edmondo Malan, 2, 20097 San Donato Milanese, MI Italy
| | - Jihye Jang
- Department of Medicine (Cardiovascular Division), Beth Israel Deaconess Medical Center, Harvard Medical School, Cardiology East Campus, Room E/SH455, 330 Brookline Ave, Boston, MA 02215 USA
| | - Michael Salerno
- University of Virginia Health System, 1215 Lee St, PO Box 800158, Charlottesville, VA 22908 USA
| | - Nish Chaturvedi
- UCL MRC Unit for Lifelong Health and Ageing, University College London, 1-19 Torrington Place, London, WC1E 7BH UK
| | - Peter Kellman
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892-1061 USA
| | - David A. Bluemke
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792-3252 USA
| | - Reza Nezafat
- Department of Medicine (Cardiovascular Division), Beth Israel Deaconess Medical Center, Harvard Medical School, Cardiology East Campus, Room E/SH455, 330 Brookline Ave, Boston, MA 02215 USA
| | - Peter Gatehouse
- CMRI Department, Royal Brompton Hospital, Sydney Street, London, SW3 6NP UK
| | - James C. Moon
- UCL Institute of Cardiovascular Science, University College London, Gower Street, London, WC1E 6BT UK
- Barts Heart Center, St Bartholomew’s Hospital, West Smithfield, London, EC1A 7BE UK
| | - on behalf of the T1MES Consortium
- UCL Institute of Cardiovascular Science, University College London, Gower Street, London, WC1E 6BT UK
- UCL MRC Unit for Lifelong Health and Ageing, University College London, 1-19 Torrington Place, London, WC1E 7BH UK
- Cardiology Department, The Royal Free Hospital, Centre for Inherited Heart Muscle Conditions, Pond Street, Hampstead, London, NW3 2QG UK
- UCL Medical School, University College London, Bloomsbury Campus, Gower Street, London, WC1E 6BT UK
- Physikalisch-Technische Bundesanstalt (PTB), Abbestr. 2–12, D-10587 Berlin, Germany
- National Institute of Standards and Technology (NIST), Boulder, MS 818.03, 325 Broadway, Boulder, CO USA
- Department of Cardiology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, 310016 Zhejiang People’s Republic of China
- Department of Physics, Imperial College London, Prince Consort Rd, London, SW7 2BB UK
- Department of Radiology, Guys and St Thomas NHS Foundation Trust, London, UK
- University of Milan-Bicocca, Piazza dell’Ateneo Nuovo 1, 20100 Milan, Italy
- Cardiovascular Biomedical Research Unit, Queen Mary University of London, London, E1 4NS UK
- Multidisciplinary Cardiovascular Research Center & Division of Biomedical Imaging, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
- Department of Radiology & Nuclear Medicine, Maastricht University Medical Centre, PO Box 5800, 6202 AZ Maastricht, The Netherlands
- Bristol Heart Institute, National Institute of Health Research (NIHR) Biomedical Research Centre, University Hospitals Bristol NHS Foundation Trust and University of Bristol, Upper Maudlin St, Bristol, BS2 8HW UK
- Department of Radiology, Leiden University Medical Centre, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
- University Hospitals Birmingham NHS Foundation Trust, Edgbaston, Birmingham, B15 2TH UK
- UK Albert B. Chandler Hospital - Pavilion G, Gill Heart & Vascular Institute, Lexington, KY 40536 USA
- Institute of Cardiovascular and Medical Sciences, RC309 Level C3, Bhf Gcrc, Glasgow, Scotland G12 8TA UK
- Department of Multidisciplinary Clinical Studies, Lomonosov Moscow State University, Moscow, Russia
- University Hospital Southampton Foundation Trust, Tremona Road, Southampton, Hampshire SO16 6YD UK
- Department of Radiology and Nuclear Medicine, Oslo University Hospital, Sognsvannsveien 20, 0372 Oslo, Norway
- San Raffaele Hospital, Via Olgettina 60, 20132 Milan, Italy
- INSA, CNRS UMR 5520, INSERM U1206, University of Lyon, UJM-Saint-Etienne, CREATIS, F-42023 Saint-Etienne, France
- Department of Radiology, University Hospital Saint-Etienne, Saint-Etienne, France
- Philips, Philips Centre, Unit 3, Guildford Business Park, Guildford, Surrey GU2 8XG UK
- SiemensHealthcare GmbH, Erlangen, Germany
- Resonance Health, 278 Stirling Highway, Claremont, WA 6010 Australia
- The Prince Charles Hospital, Griffith University and University of Queensland, Brisbane, Australia
- Department of Radiology, Universitair Ziekenhuis Leuven, Leuven, UZ Belgium
- Fondazione Toscana Gabriele Monasterio, Pisa, Italy
- School of Medicine and Dentistry, University of Aberdeen, Polwarth Building, Foresterhill, Aberdeen, AB25 2ZD Scotland, UK
- Department of Cardiovascular Medicine, Alfred Hospital, Melbourne, Australia
- Baker Heart and Diabetes Institute, Melbourne, Australia
- Department of Medicine, Monash University, Melbourne, Australia
- Department of Medicine, Montreal Heart Institute and Université de Montréal, 5000 Bélanger Street, Montreal, QC H1T 1C8 Canada
- Department of Internal Medicine – Cardiology, Deutsches Herzzentrum Berlin, Berlin, Germany
- Department of Internal Medicine and Cardiology, Charité - Universitätsmedizin Berlin, Campus Virchow Klinikum, Berlin, Germany
- King Abdulaziz Cardiac Center (KACC) (Riyadh), National Guard Health Affairs, Riyadh, Kingdom of Saudi Arabia
- The University of Sydney School of Medicine, Camperdown, NSW 2006 Australia
- I.R.C.C.S., Policlinico San Donato, Piazza Edmondo Malan, 2, 20097 San Donato Milanese, MI Italy
- Department of Medicine (Cardiovascular Division), Beth Israel Deaconess Medical Center, Harvard Medical School, Cardiology East Campus, Room E/SH455, 330 Brookline Ave, Boston, MA 02215 USA
- University of Virginia Health System, 1215 Lee St, PO Box 800158, Charlottesville, VA 22908 USA
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892-1061 USA
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792-3252 USA
- CMRI Department, Royal Brompton Hospital, Sydney Street, London, SW3 6NP UK
- Barts Heart Center, St Bartholomew’s Hospital, West Smithfield, London, EC1A 7BE UK
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Bustin A, Milotta G, Ismail TF, Neji R, Botnar RM, Prieto C. Accelerated free-breathing whole-heart 3D T 2 mapping with high isotropic resolution. Magn Reson Med 2019; 83:988-1002. [PMID: 31535729 PMCID: PMC6899588 DOI: 10.1002/mrm.27989] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Revised: 08/07/2019] [Accepted: 08/16/2019] [Indexed: 01/07/2023]
Abstract
Purpose To enable free‐breathing whole‐heart 3D T2 mapping with high isotropic resolution in a clinically feasible and predictable scan time. This 3D motion‐corrected undersampled signal matched (MUST) T2 map is achieved by combining an undersampled motion‐compensated T2‐prepared Cartesian acquisition with a high‐order patch‐based reconstruction. Methods The 3D MUST‐T2 mapping acquisition consists of an electrocardiogram‐triggered, T2‐prepared, balanced SSFP sequence with nonselective saturation pulses. Three undersampled T2‐weighted volumes are acquired using a 3D Cartesian variable‐density sampling with increasing T2 preparation times. A 2D image‐based navigator is used to correct for respiratory motion of the heart and allow 100% scan efficiency. Multicontrast high‐dimensionality undersampled patch‐based reconstruction is used in concert with dictionary matching to generate 3D T2 maps. The proposed framework was evaluated in simulations, phantom experiments, and in vivo (10 healthy subjects, 2 patients) with 1.5‐mm3 isotropic resolution. Three‐dimensional MUST‐T2 was compared against standard multi‐echo spin‐echo sequence (phantom) and conventional breath‐held single‐shot 2D SSFP T2 mapping (in vivo). Results Three‐dimensional MUST‐T2 showed high accuracy in phantom experiments (R2 > 0.99). The precision of T2 values was similar for 3D MUST‐T2 and 2D balanced SSFP T2 mapping in vivo (5 ± 1 ms versus 4 ± 2 ms, P = .52). Slightly longer T2 values were observed with 3D MUST‐T2 in comparison to 2D balanced SSFP T2 mapping (50.7 ± 2 ms versus 48.2 ± 1 ms, P < .05). Preliminary results in patients demonstrated T2 values in agreement with literature values. Conclusion The proposed approach enables free‐breathing whole‐heart 3D T2 mapping with high isotropic resolution in about 8 minutes, achieving accurate and precise T2 quantification of myocardial tissue in a clinically feasible scan time.
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Affiliation(s)
- Aurélien Bustin
- Department of Biomedical Engineering, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Giorgia Milotta
- Department of Biomedical Engineering, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Tevfik F Ismail
- Department of Biomedical Engineering, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Radhouene Neji
- Department of Biomedical Engineering, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom.,MR Research Collaborations, Siemens Healthcare, Frimley, United Kingdom
| | - René M Botnar
- Department of Biomedical Engineering, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom.,Escuela de Ingeniería, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Claudia Prieto
- Department of Biomedical Engineering, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom.,Escuela de Ingeniería, Pontificia Universidad Católica de Chile, Santiago, Chile
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Jeong D, Gladish G, Chitiboi T, Fradley MG, Gage KL, Schiebler ML. MRI in cardio-oncology: A review of cardiac complications in oncologic care. J Magn Reson Imaging 2019; 50:1349-1366. [PMID: 31448472 DOI: 10.1002/jmri.26895] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Accepted: 07/17/2019] [Indexed: 12/23/2022] Open
Abstract
From detailed characterization of cardiac abnormalities to the assessment of cancer treatment-related cardiac dysfunction, cardiac MRI is playing a growing role in the evaluation of cardiac pathology in oncology patients. Current guidelines are now incorporating the use of MRI for the comprehensive multidisciplinary approach to cancer management, and innovative applications of MRI in research are expanding its potential to provide a powerful noninvasive tool in the arsenal against cancer. This review focuses on the application of cardiac MRI to diagnose and manage cardiovascular complications related to cancer and its treatment. Following an introduction to current cardiac MRI methods and principles, this review is divided into two sections: functional cardiovascular analysis and anatomical or tissue characterization related to cancer and cancer therapeutics. Level of Evidence: 5 Technical Efficacy Stage: 1 J. Magn. Reson. Imaging 2019;50:1349-1366.
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Affiliation(s)
- Daniel Jeong
- Department of Diagnostic Imaging and Interventional Radiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - Gregory Gladish
- Department of Diagnostic Radiology, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Teodora Chitiboi
- Medical Imaging Technologies, Siemens Healthineers, Princeton, New Jersey, USA
| | - Michael G Fradley
- Cardio-Oncology Program, H. Lee Moffitt Cancer Center & Research Institute and University of South Florida Division of Cardiovascular Medicine, Tampa, Florida, USA
| | - Kenneth L Gage
- Department of Diagnostic Imaging and Interventional Radiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - Mark L Schiebler
- Department of Radiology, University of Wisconsin Madison, Madison, Wisconsin, USA
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Barczuk‐Falęcka M, Małek ŁA, Werys K, Roik D, Adamus K, Brzewski M. Normal values of native T
1
and T
2
relaxation times on 3T cardiac MR in a healthy pediatric population aged 9–18 years. J Magn Reson Imaging 2019; 51:912-918. [DOI: 10.1002/jmri.26886] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 07/16/2019] [Indexed: 12/18/2022] Open
Affiliation(s)
| | - Łukasz A. Małek
- Department of EpidemiologyCardiovascular Disease Prevention and Health Promotion, Institute of Cardiology Warsaw Poland
| | - Konrad Werys
- Oxford Centre for Clinical Magnetic Resonance ResearchJohn Radcliffe Hospital Headington, Oxford UK
| | - Danuta Roik
- Department of Pediatric RadiologyMedical University of Warsaw Poland
| | - Kalina Adamus
- Department of Pediatric RadiologyMedical University of Warsaw Poland
| | - Michał Brzewski
- Department of Pediatric RadiologyMedical University of Warsaw Poland
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Kammerlander AA, Mascherbauer J. What is normal? A central question in the application of CMR mapping techniques. Wien Klin Wochenschr 2019; 131:141-142. [DOI: 10.1007/s00508-019-1490-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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