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Bi K, Wan K, Xu Y, Wang J, Li W, Guo J, Xu Z, Li Y, Deng Q, Cheng W, Sun J, Chen Y. Pulmonary Transit Time Derived from First-Pass Perfusion Cardiac MR Imaging: A Potential New Marker for Cardiac Involvement and Prognosis in Light-Chain Amyloidosis. J Magn Reson Imaging 2024; 60:999-1010. [PMID: 37972587 DOI: 10.1002/jmri.29135] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 10/31/2023] [Accepted: 11/02/2023] [Indexed: 11/19/2023] Open
Abstract
BACKGROUND First-pass perfusion cardiac MR imaging could reflect pulmonary hemodynamics. However, the clinical value of pulmonary transit time (PTT) derived from first-pass perfusion MRI in light-chain (AL) amyloidosis requires further evaluation. PURPOSE To assess the clinical and prognostic value of PTT in patients with AL amyloidosis. STUDY TYPE Prospective observational study. POPULATION 226 biopsy-proven systemic AL amyloidosis patients (age 58.62 ± 10.10 years, 135 males) and 43 healthy controls (age 42 ± 16.2 years, 20 males). FIELD STRENGTH/SEQUENCE SSFP cine and phase sensitive inversion recovery late gadolinium enhancement (LGE) sequences, and multislice first-pass myocardial perfusion imaging with a saturation recovery turbo fast low-angle shot (SR-TurboFLASH) pulse sequence at 3.0T. ASSESSMENT PTT was measured as the time interval between the peaks of right and left ventricular cavity arterial input function curves on first-pass perfusion MR images. STATISTICAL TESTS Independent-sample t test, Mann-Whitney U test, Chi-square test, Fisher's exact test, analysis of variance, or Kruskal-Wallis test, as appropriate; univariable and multivariable Cox proportional hazards models and Kaplan-Meier curves, area under receiver operating characteristic curve were used to determine statistical significance. RESULTS PTT could differentiate AL amyloidosis patients with (N = 188) and without (N = 38) cardiac involvement (area under the curve [AUC] = 0.839). During a median follow-up of 35 months, 160 patients (70.8%) demonstrated all-cause mortality. After adjustments for clinical (Hazard ratio [HR] 1.061, confidence interval [CI]: 1.021-1.102), biochemical (HR 1.055, CI: 1.014-1.097), cardiac MRI-derived (HR 1.077, CI: 1.034-1.123), and therapeutic (HR 1.063, CI: 1.024-1.103) factors, PTT predicted mortality independently in patients with AL amyloidosis. Finally, PTT could identify worse outcomes in patients demonstrating New York Heart Association class III, Mayo 2004 stage III, and transmural LGE pattern. DATA CONCLUSION PTT may serve as a new imaging predictor of cardiac involvement and prognosis in AL amyloidosis. LEVEL OF EVIDENCE 2 TECHNICAL EFFICACY: Stage 2.
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Affiliation(s)
- Keying Bi
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, China
| | - Ke Wan
- Department of Geriatrics and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
| | - Yuanwei Xu
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, China
| | - Jie Wang
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, China
| | - Weihao Li
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, China
| | - Jiajun Guo
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, China
| | - Ziqian Xu
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, China
| | - Yangjie Li
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, China
| | - Qiao Deng
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Wei Cheng
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Jiayu Sun
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yucheng Chen
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, China
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Farley J, Brown LA, Garg P, Wahab A, Klassen JR, Jex N, Thirunavukarasu S, Chowdhary A, Sharrack N, Gorecka M, Xue H, Artis N, Levelt E, Dall'Armellina E, Kellman P, Greenwood JP, Plein S, Swoboda PP. Pulmonary transit time is a predictor of outcomes in heart failure: a cardiovascular magnetic resonance first-pass perfusion study. BMC Cardiovasc Disord 2024; 24:329. [PMID: 38943084 PMCID: PMC11212156 DOI: 10.1186/s12872-024-04003-w] [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: 11/15/2023] [Accepted: 06/21/2024] [Indexed: 07/01/2024] Open
Abstract
BACKGROUND Pulmonary transit time (PTT) can be measured automatically from arterial input function (AIF) images of dual sequence first-pass perfusion imaging. PTT has been validated against invasive cardiac catheterisation correlating with both cardiac output and left ventricular filling pressure (both important prognostic markers in heart failure). We hypothesized that prolonged PTT is associated with clinical outcomes in patients with heart failure. METHODS We recruited outpatients with a recent diagnosis of non-ischaemic heart failure with left ventricular ejection fraction (LVEF) < 50% on referral echocardiogram. Patients were followed up by a review of medical records for major adverse cardiovascular events (MACE) defined as all-cause mortality, heart failure hospitalization, ventricular arrhythmia, stroke or myocardial infarction. PTT was measured automatically from low-resolution AIF dynamic series of both the LV and RV during rest perfusion imaging, and the PTT was measured as the time (in seconds) between the centroid of the left (LV) and right ventricle (RV) indicator dilution curves. RESULTS Patients (N = 294) were followed-up for median 2.0 years during which 37 patients (12.6%) had at least one MACE event. On univariate Cox regression analysis there was a significant association between PTT and MACE (Hazard ratio (HR) 1.16, 95% confidence interval (CI) 1.08-1.25, P = 0.0001). There was also significant association between PTT and heart failure hospitalisation (HR 1.15, 95% CI 1.02-1.29, P = 0.02) and moderate correlation between PTT and N-terminal pro B-type natriuretic peptide (NT-proBNP, r = 0.51, P < 0.001). PTT remained predictive of MACE after adjustment for clinical and imaging factors but was no longer significant once adjusted for NT-proBNP. CONCLUSIONS PTT measured automatically during CMR perfusion imaging in patients with recent onset non-ischaemic heart failure is predictive of MACE and in particular heart failure hospitalisation. PTT derived in this way may be a non-invasive marker of haemodynamic congestion in heart failure and future studies are required to establish if prolonged PTT identifies those who may warrant closer follow-up or medicine optimisation to reduce the risk of future adverse events.
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Affiliation(s)
- Jonathan Farley
- Multidisciplinary Cardiovascular Research Centre, Department of Biomedical Imaging Science, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - Louise Ae Brown
- Multidisciplinary Cardiovascular Research Centre, Department of Biomedical Imaging Science, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - Pankaj Garg
- Norwich Medical School, University of East Anglia, Norfolk, UK
| | - Ali Wahab
- Multidisciplinary Cardiovascular Research Centre, Department of Biomedical Imaging Science, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - Joel Rl Klassen
- Multidisciplinary Cardiovascular Research Centre, Department of Biomedical Imaging Science, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - Nicholas Jex
- Multidisciplinary Cardiovascular Research Centre, Department of Biomedical Imaging Science, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - Sharmaine Thirunavukarasu
- Multidisciplinary Cardiovascular Research Centre, Department of Biomedical Imaging Science, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - Amrit Chowdhary
- Multidisciplinary Cardiovascular Research Centre, Department of Biomedical Imaging Science, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - Noor Sharrack
- Multidisciplinary Cardiovascular Research Centre, Department of Biomedical Imaging Science, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - Miroslawa Gorecka
- Multidisciplinary Cardiovascular Research Centre, Department of Biomedical Imaging Science, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - Hui Xue
- National Institutes for Health, National Heart, Lung, and Blood Institute, Bethesda, USA
| | - Nigel Artis
- Department of Cardiology, Mid Yorkshire Hospitals NHS Trust, Wakefield, UK
| | - Eylem Levelt
- Multidisciplinary Cardiovascular Research Centre, Department of Biomedical Imaging Science, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - Erica Dall'Armellina
- Multidisciplinary Cardiovascular Research Centre, Department of Biomedical Imaging Science, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - Peter Kellman
- National Institutes for Health, National Heart, Lung, and Blood Institute, Bethesda, USA
| | - John P Greenwood
- Multidisciplinary Cardiovascular Research Centre, Department of Biomedical Imaging Science, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - Sven Plein
- Multidisciplinary Cardiovascular Research Centre, Department of Biomedical Imaging Science, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - Peter P Swoboda
- Multidisciplinary Cardiovascular Research Centre, Department of Biomedical Imaging Science, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, LS2 9JT, UK.
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Opatřil L, Panovský R, Mojica-Pisciotti M, Krejčí J, Masárová L, Kincl V, Řehořková M, Špinarová L. Stress and Rest Pulmonary Transit Times Assessed by Cardiovascular Magnetic Resonance. Cardiol Rev 2024; 32:243-247. [PMID: 36728820 PMCID: PMC10994187 DOI: 10.1097/crd.0000000000000495] [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: 02/03/2023]
Abstract
Acquiring pulmonary circulation parameters as a potential marker of cardiopulmonary function is not new. Methods to obtain these parameters have been developed over time, with the latest being first-pass perfusion sequences in cardiovascular magnetic resonance (CMR). Even though more data on these parameters has been recently published, different nomenclature and acquisition methods are used across studies; some works even reported conflicting data. The most commonly used circulation parameters obtained using CMR include pulmonary transit time (PTT) and pulmonary transit beats (PTB). PTT is the time needed for a contrast agent (typically gadolinium-based) to circulate from the right ventricle (RV) to the left ventricle (LV). PTB is the number of cardiac cycles the process takes. Some authors also include corrected heart rate (HR) versions along with standard PTT. Besides other methods, CMR offers an option to assess stress circulation parameters, but data are minimal. This review aims to summarize the up-to-date findings and provide an overview of the latest progress on this promising, dynamically evolving topic.
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Affiliation(s)
- Lukáš Opatřil
- From the International Clinical Research Center and 1st Department of Internal Medicine/Cardioangiology at St. Anne's University Hospital, and Faculty of Medicine, Masaryk University, 656 91 Brno, Czech Republic
| | - Roman Panovský
- From the International Clinical Research Center and 1st Department of Internal Medicine/Cardioangiology at St. Anne's University Hospital, and Faculty of Medicine, Masaryk University, 656 91 Brno, Czech Republic
| | - Mary Mojica-Pisciotti
- International Clinical Research Center at St. Anne's University Hospital, 656 91 Brno, Czech Republic
| | - Jan Krejčí
- From the International Clinical Research Center and 1st Department of Internal Medicine/Cardioangiology at St. Anne's University Hospital, and Faculty of Medicine, Masaryk University, 656 91 Brno, Czech Republic
| | - Lucia Masárová
- From the International Clinical Research Center and 1st Department of Internal Medicine/Cardioangiology at St. Anne's University Hospital, and Faculty of Medicine, Masaryk University, 656 91 Brno, Czech Republic
| | - Vladimir Kincl
- From the International Clinical Research Center and 1st Department of Internal Medicine/Cardioangiology at St. Anne's University Hospital, and Faculty of Medicine, Masaryk University, 656 91 Brno, Czech Republic
| | - Magdalena Řehořková
- Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic; and 1st Department of Internal Medicine/Cardioangiology at St. Anne's University Hospital, and Faculty of Medicine, Masaryk University, 656 91 Brno, Czech Republic
| | - Lenka Špinarová
- International Clinical Research Center at St. Anne's University Hospital, 656 91 Brno, Czech Republic
- Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic; and 1st Department of Internal Medicine/Cardioangiology at St. Anne's University Hospital, and Faculty of Medicine, Masaryk University, 656 91 Brno, Czech Republic
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Kang S, Chen J, Zhang H, Li G, Liu Y, Mei X, Zhu B, Ai X, Jiang S. Pulmonary Transit Time Assessment by CEUS in Healthy Rabbits: Feasibility, and the Effects of UCAs Dilution Concentration. ULTRASONIC IMAGING 2024; 46:178-185. [PMID: 38622911 DOI: 10.1177/01617346241246169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
To evaluate the inter-observer variability and the intra-observer repeatability of pulmonary transit time (PTT) measurement using contrast-enhanced ultrasound (CEUS) in healthy rabbits, and assess the effects of dilution concentration of ultrasound contrast agents (UCAs) on PTT. Thirteen healthy rabbits were selected, and five concentrations UCAs of 1:200, 1:100, 1:50, 1:10, and 1:1 were injected into the right ear vein. Five digital loops were obtained from the apical 4-chamber view. Four sonographers obtained PTT by plotting the TIC of right atrium (RA) and left atrium (LA) at two time points (T1 and T2). The frame counts of the first appearance of UCAs in RA and LA had excellent inter-observer agreement, with intra-class correlations (ICC) of 0.996, 0.988, respectively. The agreement of PTT among four observers was all good at five different concentrations, with an ICC of 0.758-0.873. The reproducibility of PTT obtained by four observers at T1 and T2 was performed well, with ICC of 0.888-0.961. The median inter-observer variability across 13 rabbits was 6.5% and the median variability within 14 days for 4 observers was 1.9%, 1.7%, 2.2%, 1.9%, respectively; The PTT of 13 healthy rabbits is 1.01 ± 0.18 second. The difference of PTT between five concentrations is statistically significant. The PTT obtained by a concentration of 1:200 and 1:100 were higher than that of 1:1, while there were no significantly differences in PTT of a concentration of 1:1, 1:10, and 1:50. PTT measured by CEUS in rabbits is feasible, with excellent inter-observer and intra-observer reliability and reproducibility, and dilution concentration of UCAs influences PTT results.
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Affiliation(s)
- Song Kang
- Department of Ultrasound Medicine, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
- Department of ultrasound, Chengdu Seventh People's Hospital (Affiliated Cancer Hospital of Chengdu Medical College), Chengdu, China
| | - Jianfeng Chen
- Laboratory Animal Center, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - He Zhang
- Department of Ultrasound Medicine, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Guangyin Li
- Department of Ultrasound Medicine, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Yingying Liu
- Department of Ultrasound Medicine, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Xue Mei
- Department of Ultrasound Medicine, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Binyang Zhu
- Department of Ultrasound Medicine, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Xin Ai
- Department of Ultrasound Medicine, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Shuangquan Jiang
- Department of Ultrasound Medicine, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
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Cao JJ, Nashta NF, Weber J, Bano R, Passick M, Cheng YJ, Schapiro W, Grgas M, Gliganic K. Association of pulmonary transit time by cardiac magnetic resonance with heart failure hospitalization in a large prospective cohort with diverse cardiac conditions. J Cardiovasc Magn Reson 2023; 25:57. [PMID: 37821911 PMCID: PMC10568762 DOI: 10.1186/s12968-023-00963-8] [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: 12/14/2022] [Accepted: 09/13/2023] [Indexed: 10/13/2023] Open
Abstract
BACKGROUND Longer pulmonary transit time (PTT) is closely associated with hemodynamic abnormalities. However, the implications on heart failure (HF) risk have not been investigated broadly in patients with diverse cardiac conditions. In this study we examined the long-term risk of HF hospitalization associated with longer PTT in a large prospective cohort with a broad spectrum of cardiac conditions. METHODS All subjects were prospectively recruited to undergo cardiac magnetic resonance (CMR). The dynamic images of first-pass perfusion were acquired to assess peak-to-peak pulmonary transit time (PTT) which was subsequently normalized to RR interval duration. The risk of HF was examined using Cox proportional hazards models adjusted for baseline confounding risk factors. RESULTS Among 506 consecutively consented patients undergoing clinical cardiac MR with diverse cardiac conditions, the mean age was 63 ± 14 years and 373 (73%) were male. After a mean follow up duration of 4.5 ± 3.0 years, 70 (14%) patients developed hospitalized HF and of these 6 died. A normalized PTT ≥ 8.2 was associated with a significantly increased adjusted HF hazard ratio of 3.69 (95% CI 2.02, 6.73). The HF hazard ratio was 1.26 (95% CI 1.18, 1.33) for each 1 unit increase in PTT which was higher among those preserved (1.70, 95% CI 1.20, 2.41) compared to those with reduced left ventricular ejection fraction (< 50%) (1.18, 95% CI 1.09, 1.27). PTT remained a significant risk factor of hospitalized HF after additional adjustment for N-terminal pro-hormone brain natriuretic peptide (NT-proBNP) or left ventricular global longitudinal strain with additionally demonstrated incremental model improvement through likelihood ratio testing. CONCLUSIONS Our findings support the role of PTT in assessing HF risk among patients with broad spectrum of cardiac conditions with reduced as well as preserved ejection fraction. Longer PTT duration is an incremental risk factor for HF when baseline global longitudinal strain and NT-proBNP are taken into consideration.
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Affiliation(s)
- J Jane Cao
- Division of Cardiac Imaging, St. Francis Hospital & Heart Center, 100 Port Washington Blvd., Roslyn, NY, 11576, USA.
- DeMatteis Cardiovascular Institute, St. Francis Hospital & Heart Center, Roslyn, NY, USA.
| | - Niloofar Fouladi Nashta
- Sol Price School of Public Policy and Leonard D. Schaeffer Center for Health Policy and Economics, University of Southern California, Los Angeles, CA, USA
| | - Jonathan Weber
- DeMatteis Cardiovascular Institute, St. Francis Hospital & Heart Center, Roslyn, NY, USA
| | - Ruqiyya Bano
- DeMatteis Cardiovascular Institute, St. Francis Hospital & Heart Center, Roslyn, NY, USA
| | - Michael Passick
- Division of Cardiac Imaging, St. Francis Hospital & Heart Center, 100 Port Washington Blvd., Roslyn, NY, 11576, USA
- DeMatteis Cardiovascular Institute, St. Francis Hospital & Heart Center, Roslyn, NY, USA
| | - Y Joshua Cheng
- Division of Cardiac Imaging, St. Francis Hospital & Heart Center, 100 Port Washington Blvd., Roslyn, NY, 11576, USA
- DeMatteis Cardiovascular Institute, St. Francis Hospital & Heart Center, Roslyn, NY, USA
| | - William Schapiro
- Division of Cardiac Imaging, St. Francis Hospital & Heart Center, 100 Port Washington Blvd., Roslyn, NY, 11576, USA
| | - Marie Grgas
- DeMatteis Cardiovascular Institute, St. Francis Hospital & Heart Center, Roslyn, NY, USA
| | - Kathleen Gliganic
- Division of Cardiac Imaging, St. Francis Hospital & Heart Center, 100 Port Washington Blvd., Roslyn, NY, 11576, USA
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Zhang J, Zheng XZ, Wu XC. Pulmonary transit time has close relation with pulmonary pulse wave transit time in normal subjects. Clin Physiol Funct Imaging 2023; 43:78-84. [PMID: 36377619 DOI: 10.1111/cpf.12794] [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: 05/05/2022] [Revised: 10/06/2022] [Accepted: 11/10/2022] [Indexed: 11/16/2022]
Abstract
BACKGROUND Pulmonary transit time (PTT) and pulmonary pulse wave transit time (pPTT) are useful parameters for the evaluation of cardiopulmonary circulation and vascular alterations, but their relationship remains unknown. The aim of this study was to investigate the correlation between PTT and pPTT. METHODS A total of 60 healthy volunteers were involved in this study. They were divided into two groups (30 participants per group): <50 years and >50 years. They all underwent Doppler echocardiography of pulmonary vein flow and contrast echocardiography with the measurement of pPTT and PTT, respectively. The correlation between PTT and pPTT was deduced. RESULTS Compared with Group of <50 years, there was a significant increment in left atrial volume index, left atrial pressure and pulmonary artery stiffness but a significant reduction in acceleration times of pulmonary artery flow in Group of >50 years (p < 0.05). Group >50 years had longer PTT and but reduced normalized PTT by R-R interval (NPTT), reduced normalized pPTT by R-R interval (NpPTT) than Group <50 years (p < 0.05), while there was no significant difference in pPTT between the two groups (p > 0.05). PTT and NPTT were all negatively correlated with pPTT and NpPTT. The statistically significant strongest correlation was observed between PTT and NpPTT (r = -0.886, p < 0.0001). The regression equation for them was y = 7.4396-13.095x (R2 = 0.785; p < 0.001), where x and y represent NpPTT and PTT, respectively. CONCLUSION PTT had close relation with pPTT in normal subjects. From the regression equation for them, we can get the value of PTT simply and easily by non-invasively measured pPTT.
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Affiliation(s)
- Jun Zhang
- Department of Ultrasound, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu, People's Republic of China
| | - Xiao-Zhi Zheng
- Department of Ultrasound, Yangpu Hospital, School of Medicine, Tongji University, Shanghai, People's Republic of China
| | - Xu-Chu Wu
- Department of Ultrasound, Yangpu Hospital, School of Medicine, Tongji University, Shanghai, People's Republic of China
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Moore JE, Cerne JW, Pathrose A, Veer M, Sarnari R, Ragin A, Carr JC, Markl M. Quantitative Assessment of Regional Pulmonary Transit Times in Pulmonary Hypertension. J Magn Reson Imaging 2023; 57:727-737. [PMID: 35808987 DOI: 10.1002/jmri.28343] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 06/21/2022] [Accepted: 06/22/2022] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Pulmonary hypertension (PH) contributes to restricted flow through the pulmonary circulation characterized by elevated mean pulmonary artery pressure acquired from invasive right heart catheterization (RHC). MRI may provide a noninvasive alternative for diagnosis and characterization of PH. PURPOSE To characterize PH via quantification of regional pulmonary transit times (rPTT). STUDY TYPE Retrospective. POPULATION A total of 43 patients (58% female); 24 controls (33% female). RHC-confirmed patients classified as World Health Organization (WHO) subgroups 1-4. FIELD STRENGTH/SEQUENCE A 1.5 T/time-resolved contrast-enhanced MR Angiography (CE-MRA). ASSESSMENT CE-MRA data volumes were combined into a 4D matrix (3D resolution + time). Contrast agent arrival time was defined as the peak in the signal-intensity curve generated for each voxel. Average arrival times within a vessel region of interest (ROI) were normalized to the main pulmonary artery ROI (t0 ) for eight regions to define rPTT for all subjects. Subgroup analysis included grouping the four arterial and four venous regions. Intraclass correlation analysis completed for reproducibility. STATISTICAL TESTS Analysis of covariance with age as covariate. A priori Student's t-tests or Wilcoxon rank-sum test; α = 0.05. Results compared to controls unless noted. Significant without listing P value. ICC ran as two-way absolute agreement model with two observers. RESULTS PH patients demonstrated elevated rPTT in all vascular regions; average rPTT increase in arterial and venous branches was 0.85 ± 0.15 seconds (47.7%) and 1.0 ± 0.18 seconds (16.9%), respectively. Arterial rPTT was increased for all WHO subgroups; venous regions were elevated for subgroups 2 and 4 (group 1, P = 0.86; group 3, P = 0.32). No significant rPTT differences were found between subgroups (P = 0.094-0.94). Individual vessel ICC values ranged from 0.58 to 0.97. DATA CONCLUSION Noninvasive assessment of PH using standard-of-care time-resolved CE-MRA can detect increased rPTT in PH patients of varying phenotypes compared to controls. LEVEL OF EVIDENCE 1 TECHNICAL EFFICACY: Stage 3.
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Affiliation(s)
- Jackson E Moore
- Department of Radiology, Northwestern University, Chicago, Illinois, USA.,Department of Biomedical Engineering, Northwestern University, Chicago, Illinois, USA
| | - John W Cerne
- Department of Radiology, Northwestern University, Chicago, Illinois, USA
| | - Ashitha Pathrose
- Department of Radiology, Northwestern University, Chicago, Illinois, USA
| | - Manik Veer
- Department of Radiology, Northwestern University, Chicago, Illinois, USA
| | - Roberto Sarnari
- Department of Radiology, Northwestern University, Chicago, Illinois, USA
| | - Ann Ragin
- Department of Radiology, Northwestern University, Chicago, Illinois, USA
| | - James C Carr
- Department of Radiology, Northwestern University, Chicago, Illinois, USA
| | - Michael Markl
- Department of Radiology, Northwestern University, Chicago, Illinois, USA.,Department of Biomedical Engineering, Northwestern University, Chicago, Illinois, USA
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Nezami N, Garg T. Editorial for "Quantitative Assessment of Regional Pulmonary Transit Times in Pulmonary Hypertension". J Magn Reson Imaging 2023; 57:738-739. [PMID: 35849044 DOI: 10.1002/jmri.28361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 07/05/2022] [Indexed: 11/06/2022] Open
Affiliation(s)
- Nariman Nezami
- Division of Vascular and Interventional Radiology, Department of Diagnostic Radiology and Nuclear Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA.,Experimental Therapeutics Program, University of Maryland Marlene and Stewart Greenebaum Comprehensive Cancer Center, Baltimore, Maryland, USA
| | - Tushar Garg
- Division of Vascular and Interventional Radiology, Russell H Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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Segeroth M, Winkel DJ, Strebel I, Yang S, van der Stouwe JG, Formambuh J, Badertscher P, Cyriac J, Wasserthal J, Caobelli F, Madaffari A, Lopez-Ayala P, Zellweger M, Sauter A, Mueller C, Bremerich J, Haaf P. Pulmonary transit time of cardiovascular magnetic resonance perfusion scans for quantification of cardiopulmonary haemodynamics. Eur Heart J Cardiovasc Imaging 2023:6994365. [PMID: 36662127 PMCID: PMC10364617 DOI: 10.1093/ehjci/jead001] [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: 09/30/2022] [Accepted: 12/26/2022] [Indexed: 01/21/2023] Open
Abstract
AIMS Pulmonary transit time (PTT) is the time blood takes to pass from the right ventricle to the left ventricle via pulmonary circulation. We aimed to quantify PTT in routine cardiovascular magnetic resonance imaging perfusion sequences. PTT may help in the diagnostic assessment and characterization of patients with unclear dyspnoea or heart failure (HF). METHODS AND RESULTS We evaluated routine stress perfusion cardiovascular magnetic resonance scans in 352 patients, including an assessment of PTT. Eighty-six of these patients also had simultaneous quantification of N-terminal pro-brain natriuretic peptide (NTproBNP). NT-proBNP is an established blood biomarker for quantifying ventricular filling pressure in patients with presumed HF. Manually assessed PTT demonstrated low inter-rater variability with a correlation between raters >0.98. PTT was obtained automatically and correctly in 266 patients using artificial intelligence. The median PTT of 182 patients with both left and right ventricular ejection fraction >50% amounted to 6.8 s (Pulmonary transit time: 5.9-7.9 s). PTT was significantly higher in patients with reduced left ventricular ejection fraction (<40%; P < 0.001) and right ventricular ejection fraction (<40%; P < 0.0001). The area under the receiver operating characteristics curve (AUC) of PTT for exclusion of HF (NT-proBNP <125 ng/L) was 0.73 (P < 0.001) with a specificity of 77% and sensitivity of 70%. The AUC of PTT for the inclusion of HF (NT-proBNP >600 ng/L) was 0.70 (P < 0.001) with a specificity of 78% and sensitivity of 61%. CONCLUSION PTT as an easily, even automatically obtainable and robust non-invasive biomarker of haemodynamics might help in the evaluation of patients with dyspnoea and HF.
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Affiliation(s)
- Martin Segeroth
- Department of Radiology and Nuclear Medicine, University Hospital, Basel and University of Basel, Petersgraben 4, 4031 Basel, Switzerland
| | - David Jean Winkel
- Department of Radiology and Nuclear Medicine, University Hospital, Basel and University of Basel, Petersgraben 4, 4031 Basel, Switzerland
| | - Ivo Strebel
- Department of Cardiology, Cardiovascular Research Institute Basel, University Hospital Basel and University of Basel, Petersgraben 4, 4031 Basel, Switzerland
| | - Shan Yang
- Department of Research and Analysis, University Hospital Basel, University of Basel, Petersgraben 4, 4031 Basel, Switzerland
| | - Jan Gerrit van der Stouwe
- Department of Cardiology, Cardiovascular Research Institute Basel, University Hospital Basel and University of Basel, Petersgraben 4, 4031 Basel, Switzerland
| | - Jude Formambuh
- Department of Cardiology, Cardiovascular Research Institute Basel, University Hospital Basel and University of Basel, Petersgraben 4, 4031 Basel, Switzerland
| | - Patrick Badertscher
- Department of Cardiology, Cardiovascular Research Institute Basel, University Hospital Basel and University of Basel, Petersgraben 4, 4031 Basel, Switzerland
| | - Joshy Cyriac
- Department of Research and Analysis, University Hospital Basel, University of Basel, Petersgraben 4, 4031 Basel, Switzerland
| | - Jakob Wasserthal
- Department of Research and Analysis, University Hospital Basel, University of Basel, Petersgraben 4, 4031 Basel, Switzerland
| | - Federico Caobelli
- Department of Radiology and Nuclear Medicine, University Hospital, Basel and University of Basel, Petersgraben 4, 4031 Basel, Switzerland
| | - Antonio Madaffari
- Department of Cardiology, University Hospital Bern, Freiburgstrasse 18, 3010 Bern, Switzerland
| | - Pedro Lopez-Ayala
- Department of Cardiology, Cardiovascular Research Institute Basel, University Hospital Basel and University of Basel, Petersgraben 4, 4031 Basel, Switzerland
| | - Michael Zellweger
- Department of Cardiology, Cardiovascular Research Institute Basel, University Hospital Basel and University of Basel, Petersgraben 4, 4031 Basel, Switzerland
| | - Alexander Sauter
- Department of Radiology and Nuclear Medicine, University Hospital, Basel and University of Basel, Petersgraben 4, 4031 Basel, Switzerland
| | - Christian Mueller
- Department of Cardiology, Cardiovascular Research Institute Basel, University Hospital Basel and University of Basel, Petersgraben 4, 4031 Basel, Switzerland
| | - Jens Bremerich
- Department of Radiology and Nuclear Medicine, University Hospital, Basel and University of Basel, Petersgraben 4, 4031 Basel, Switzerland
| | - Philip Haaf
- Department of Cardiology, Cardiovascular Research Institute Basel, University Hospital Basel and University of Basel, Petersgraben 4, 4031 Basel, Switzerland
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Gong C, Guo X, Wan K, Chen C, Chen X, Guo J, He J, Yin L, Wen B, Pu S, Chen Y. Corrected MRI Pulmonary Transit Time for Identification of Combined Precapillary and Postcapillary Pulmonary Hypertension in Patients With Left Heart Disease. J Magn Reson Imaging 2022; 57:1518-1528. [PMID: 37021578 DOI: 10.1002/jmri.28386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 07/25/2022] [Accepted: 07/26/2022] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND The identification of combined precapillary and postcapillary pulmonary hypertension (CpcPH) in patients with pulmonary hypertension (PH) due to left heart disease (LHD) can influence therapy and outcome and is currently based on invasively determined hemodynamic parameters. PURPOSE To investigate the diagnostic value of MRI-derived corrected pulmonary transit time (PTTc) in PH-LHD sub-grouped according to hemodynamic phenotypes. STUDY TYPE Prospective observational study. POPULATION A total of 60 patients with PH-LHD (18 with isolated postcapillary PH [IpcPH] and 42 with CpcPH), and 33 healthy subjects. FIELD STRENGTH/SEQUENCE A 3.0 T/balanced steady-state free precession cine and gradient echo-train echo planar pulse first-pass perfusion. ASSESSMENT In patients, right heart catheterization (RHC) and MRI were performed within 30 days. Pulmonary vascular resistance (PVR) was used as the diagnostic "reference standard." The PTTc was calculated as the time interval between the peaks of the biventricular signal-intensity/time curve and corrected for heart rate. PTTc was compared between patient groups and healthy subjects and its relationship to PVR assessed. The diagnostic accuracy of PTTc for distinguishing IpcPH and CpcPH was determined. STATISTICAL TESTS Student's t-test, Mann-Whitney U-test, linear and logistic regression analysis, and receiver-operating characteristic curves. Significance level: P < 0.05. RESULTS PTTc was significantly prolonged in CpcPH compared with IpcPH and normal controls (17.28 ± 7.67 vs. 8.82 ± 2.55 vs. 6.86 ± 2.11 seconds), and in IpcPH compared with normal controls (8.82 ± 2.55 vs. 6.86 ± 2.11 seconds). Prolonged PTTc was significantly associated with increased PVR. Furthermore, PTTc was a significantly independent predictor of CpcPH (odds ratio: 1.395, 95% confidence interval: 1.071-1.816). The area under curve was 0.852 at a cut-off value of 11.61 seconds for PTTc to distinguish between CpcPH and IpcPH (sensitivity 71.43% and specificity 94.12%). DATA CONCLUSION PTTc may be used to identify CpcPH. Our findings have potential to improve selection for invasive RHC for PH-LHD patients. EVIDENCE LEVEL 3 TECHNICAL EFFICACY: Stage 2.
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Affiliation(s)
- Chao Gong
- Cardiology Division, West China Hospital Sichuan University Chengdu Sichuan Province China
| | - Xinli Guo
- Cardiology Division, West China Hospital Sichuan University Chengdu Sichuan Province China
| | - Ke Wan
- Department of Geriatrics, West China Hospital Sichuan University Chengdu Sichuan Province China
| | - Chen Chen
- Cardiology Division, West China Hospital Sichuan University Chengdu Sichuan Province China
| | - Xiaoling Chen
- Cardiology Division, West China Hospital Sichuan University Chengdu Sichuan Province China
| | - Jiajun Guo
- Cardiology Division, West China Hospital Sichuan University Chengdu Sichuan Province China
| | - Juan He
- Cardiology Division, West China Hospital Sichuan University Chengdu Sichuan Province China
| | - Lidan Yin
- Cardiology Division, West China Hospital Sichuan University Chengdu Sichuan Province China
| | - Bi Wen
- Cardiology Division, West China Hospital Sichuan University Chengdu Sichuan Province China
| | - Shoufang Pu
- Cardiology Division, West China Hospital Sichuan University Chengdu Sichuan Province China
| | - Yucheng Chen
- Cardiology Division, West China Hospital Sichuan University Chengdu Sichuan Province China
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11
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Opatřil L, Panovsky R, Mojica-Pisciotti M, Máchal J, Krejčí J, Holeček T, Masárová L, Feitová V, Godava J, Kincl V, Kepák T, Závodná G, Špinarová L. Stress pulmonary circulation parameters assessed by a cardiovascular magnetic resonance in patients after a heart transplant. Sci Rep 2022; 12:6130. [PMID: 35414701 PMCID: PMC9005501 DOI: 10.1038/s41598-022-09739-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 03/21/2022] [Indexed: 11/09/2022] Open
Abstract
Rest pulmonary circulation parameters such as pulmonary transit time (PTT), heart rate corrected PTT (PTTc) and pulmonary transit beats (PTB) can be evaluated using several methods, including the first-pass perfusion from cardiovascular magnetic resonance. As previously published, up to 58% of patients after HTx have diastolic dysfunction detectable only in stress conditions. By using adenosine stress perfusion images, stress analogues of the mentioned parameters can be assessed. By dividing stress to rest biomarkers, potential new ratio parameters (PTT ratio and PTTc ratio) can be obtained. The objectives were to (1) provide more evidence about stress pulmonary circulation biomarkers, (2) present stress to rest ratio parameters, and (3) assess these biomarkers in patients with presumed diastolic dysfunction after heart transplant (HTx) and in childhood cancer survivors (CCS) without any signs of diastolic dysfunction. In this retrospective study, 48 patients after HTx, divided into subgroups based on echocardiographic signs of diastolic dysfunction (41 without, 7 with) and 39 CCS were enrolled. PTT was defined as the difference between the onset time of the signal intensity increase in the left and the right ventricle. PTT in rest conditions were without significant differences when comparing the CCS and HTx subgroup without diastolic dysfunction (4.96 ± 0.93 s vs. 5.51 ± 1.14 s, p = 0.063) or with diastolic dysfunction (4.96 ± 0.93 s vs. 6.04 ± 1.13 s, p = 0.13). However, in stress conditions, both PTT and PTTc were significantly lower in the CCS group than in the HTx subgroups, (PTT: 3.76 ± 0.78 s vs. 4.82 ± 1.03 s, p < 0.001; 5.52 ± 1.56 s, p = 0.002). PTT ratio and PTTc ratio were below 1 in all groups. In conclusion, stress pulmonary circulation parameters obtained from CMR showed prolonged PTT and PTTc in HTx groups compared to CCS, which corresponds with the presumption of underlying diastolic dysfunction. The ratio parameters were less than 1.
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Affiliation(s)
- Lukáš Opatřil
- First Department of Internal Medicine and Cardioangiology, St. Anne's University Hospital, Pekarska 53, 656 91, Brno, Czech Republic.,International Clinical Research Centre, St. Anne's University Hospital, Brno, Czech Republic.,Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Roman Panovsky
- First Department of Internal Medicine and Cardioangiology, St. Anne's University Hospital, Pekarska 53, 656 91, Brno, Czech Republic. .,International Clinical Research Centre, St. Anne's University Hospital, Brno, Czech Republic. .,Faculty of Medicine, Masaryk University, Brno, Czech Republic. .,First Department of Internal Medicine and Cardioangiology, International Clinical Research Centre, Faculty of Medicine, Masaryk University, St. Anne's University Hospital, Brno, Czech Republic.
| | - Mary Mojica-Pisciotti
- International Clinical Research Centre, St. Anne's University Hospital, Brno, Czech Republic
| | - Jan Máchal
- International Clinical Research Centre, St. Anne's University Hospital, Brno, Czech Republic.,Department of Pathophysiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Jan Krejčí
- First Department of Internal Medicine and Cardioangiology, St. Anne's University Hospital, Pekarska 53, 656 91, Brno, Czech Republic.,Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Tomáš Holeček
- International Clinical Research Centre, St. Anne's University Hospital, Brno, Czech Republic.,Department of Medical Imaging, St. Anne's University Hospital, Brno, Czech Republic
| | - Lucia Masárová
- First Department of Internal Medicine and Cardioangiology, St. Anne's University Hospital, Pekarska 53, 656 91, Brno, Czech Republic.,International Clinical Research Centre, St. Anne's University Hospital, Brno, Czech Republic.,Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Věra Feitová
- International Clinical Research Centre, St. Anne's University Hospital, Brno, Czech Republic.,Department of Medical Imaging, St. Anne's University Hospital, Brno, Czech Republic
| | - Július Godava
- First Department of Internal Medicine and Cardioangiology, St. Anne's University Hospital, Pekarska 53, 656 91, Brno, Czech Republic
| | - Vladimír Kincl
- First Department of Internal Medicine and Cardioangiology, St. Anne's University Hospital, Pekarska 53, 656 91, Brno, Czech Republic.,International Clinical Research Centre, St. Anne's University Hospital, Brno, Czech Republic.,Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Tomáš Kepák
- International Clinical Research Centre, St. Anne's University Hospital, Brno, Czech Republic.,Department of Paediatric Oncology, University Hospital Brno, Brno, Czech Republic
| | | | - Lenka Špinarová
- First Department of Internal Medicine and Cardioangiology, St. Anne's University Hospital, Pekarska 53, 656 91, Brno, Czech Republic.,Faculty of Medicine, Masaryk University, Brno, Czech Republic
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12
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Diagnosis of acute heart failure in CT pulmonary angiography: feasibility and accuracy. Eur Radiol 2022; 32:5287-5296. [PMID: 35294585 PMCID: PMC8924734 DOI: 10.1007/s00330-022-08676-9] [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: 12/14/2021] [Revised: 02/13/2022] [Accepted: 02/17/2022] [Indexed: 11/04/2022]
Abstract
OBJECTIVES To evaluate the feasibility and accuracy of diagnosing acute heart failure (HF) with CT pulmonary angiography (CTPA) in emergency department patients. METHODS In this retrospective single-center study, we evaluated 150 emergency department patients (mean age 65 ± 17 years) undergoing CTPA with a fixed scan (100 kVp) and contrast media protocol (60 mL, 4 mL/s) who had no pulmonary embolism (PE). Patients were subdivided into training cohort (n = 100) and test cohort (n = 50). Three independent, blinded readers measured the attenuation in the right ventricle (RV) and left ventricle (LV) on axial images. The ratio (HUratio) and difference (HUdiff) between RV and LV attenuation were calculated. Diagnosis of acute HF was made on the basis of clinical, laboratory, and echocardiography data. Optimal thresholds, sensitivity, and specificity were calculated using the area under the curve (AUC) from receiver operating characteristics analysis. RESULTS Fifty-nine of the 150 patients (40%) were diagnosed with acute HF. Attenuation measurements showed an almost perfect interobserver agreement (intraclass correlation coefficient: 0.986, 95%CI: 0.980-0.991). NT-pro BNP exhibited moderate correlations with HUratio (r = 0.50, p < 0.001) and HUdiff (r = 0.50, p < 0.001). In the training cohort, HUratio (AUC: 0.89, 95%CI: 0.82-0.95) and HUdiff (AUC: 0.88, 95%CI: 0.81-0.95) showed a very good performance to diagnose HF. Optimal cutoff values were 1.42 for HUratio (sensitivity 93%; specificity 75%) and 113 for HUdiff (sensitivity 93%; specificity 73%). Applying these thresholds to the test cohort yielded a sensitivity of 89% and 89% and a specificity of 69% and 63% for HUratio and HUdiff, respectively. CONCLUSION In emergency department patients undergoing CTPA and showing no PE, both HUratio and HUdiff have a high sensitivity for diagnosing acute HF. KEY POINTS • Heart failure is a common differential diagnosis in patients undergoing CT pulmonary angiography. • In emergency department patients undergoing CT pulmonary angiography and showing no pulmonary embolism, attenuation differences of the left and right ventricle have a high sensitivity for diagnosing acute heart failure.
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13
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Seraphim A, Knott KD, Menacho K, Augusto JB, Davies R, Pierce I, Joy G, Bhuva AN, Xue H, Treibel TA, Cooper JA, Petersen SE, Fontana M, Hughes AD, Moon JC, Manisty C, Kellman P. Prognostic Value of Pulmonary Transit Time and Pulmonary Blood Volume Estimation Using Myocardial Perfusion CMR. JACC Cardiovasc Imaging 2021; 14:2107-2119. [PMID: 34023269 PMCID: PMC8560640 DOI: 10.1016/j.jcmg.2021.03.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 03/19/2021] [Accepted: 03/26/2021] [Indexed: 11/29/2022]
Abstract
OBJECTIVES The purpose of this study was to explore the prognostic significance of PTT and PBVi using an automated, inline method of estimation using CMR. BACKGROUND Pulmonary transit time (PTT) and pulmonary blood volume index (PBVi) (the product of PTT and cardiac index), are quantitative biomarkers of cardiopulmonary status. The development of cardiovascular magnetic resonance (CMR) quantitative perfusion mapping permits their automated derivation, facilitating clinical adoption. METHODS In this retrospective 2-center study of patients referred for clinical myocardial perfusion assessment using CMR, analysis of right and left ventricular cavity arterial input function curves from first pass perfusion was performed automatically (incorporating artificial intelligence techniques), allowing estimation of PTT and subsequent derivation of PBVi. Association with major adverse cardiovascular events (MACE) and all-cause mortality were evaluated using Cox proportional hazard models, after adjusting for comorbidities and CMR parameters. RESULTS A total of 985 patients (67% men, median age 62 years [interquartile range (IQR): 52 to 71 years]) were included, with median left ventricular ejection fraction (LVEF) of 62% (IQR: 54% to 69%). PTT increased with age, male sex, atrial fibrillation, and left atrial area, and reduced with LVEF, heart rate, diabetes, and hypertension (model r2 = 0.57). Over a median follow-up period of 28.6 months (IQR: 22.6 to 35.7 months), MACE occurred in 61 (6.2%) patients. After adjusting for prognostic factors, both PTT and PBVi independently predicted MACE, but not all-cause mortality. There was no association between cardiac index and MACE. For every 1 × SD (2.39-s) increase in PTT, the adjusted hazard ratio for MACE was 1.43 (95% confidence interval [CI]: 1.10 to 1.85; p = 0.007). The adjusted hazard ratio for 1 × SD (118 ml/m2) increase in PBVi was 1.42 (95% CI: 1.13 to 1.78; p = 0.002). CONCLUSIONS Pulmonary transit time (and its derived parameter pulmonary blood volume index), measured automatically without user interaction as part of CMR perfusion mapping, independently predicted adverse cardiovascular outcomes. These biomarkers may offer additional insights into cardiopulmonary function beyond conventional predictors including ejection fraction.
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Affiliation(s)
- Andreas Seraphim
- Institute of Cardiovascular Science, University College London, Gower Street, London, United Kingdom; Barts Heart Centre, St Bartholomew's Hospital, West Smithfield, London, United Kingdom
| | - Kristopher D Knott
- Institute of Cardiovascular Science, University College London, Gower Street, London, United Kingdom; Barts Heart Centre, St Bartholomew's Hospital, West Smithfield, London, United Kingdom
| | - Katia Menacho
- Institute of Cardiovascular Science, University College London, Gower Street, London, United Kingdom; Barts Heart Centre, St Bartholomew's Hospital, West Smithfield, London, United Kingdom
| | - Joao B Augusto
- Institute of Cardiovascular Science, University College London, Gower Street, London, United Kingdom; Barts Heart Centre, St Bartholomew's Hospital, West Smithfield, London, United Kingdom
| | - Rhodri Davies
- Institute of Cardiovascular Science, University College London, Gower Street, London, United Kingdom; Barts Heart Centre, St Bartholomew's Hospital, West Smithfield, London, United Kingdom
| | - Iain Pierce
- Barts Heart Centre, St Bartholomew's Hospital, West Smithfield, London, United Kingdom
| | - George Joy
- Barts Heart Centre, St Bartholomew's Hospital, West Smithfield, London, United Kingdom
| | - Anish N Bhuva
- Institute of Cardiovascular Science, University College London, Gower Street, London, United Kingdom; Barts Heart Centre, St Bartholomew's Hospital, West Smithfield, London, United Kingdom
| | - Hui Xue
- National Heart, Lung, and Blood Institute, National Institutes of Health, DHHS, Bethesda, Maryland, USA
| | - Thomas A Treibel
- Institute of Cardiovascular Science, University College London, Gower Street, London, United Kingdom; Barts Heart Centre, St Bartholomew's Hospital, West Smithfield, London, United Kingdom
| | - Jackie A Cooper
- William Harvey Research Institute, Queen Mary University of London, United Kingdom
| | - Steffen E Petersen
- Barts Heart Centre, St Bartholomew's Hospital, West Smithfield, London, United Kingdom; William Harvey Research Institute, Queen Mary University of London, United Kingdom
| | - Marianna Fontana
- Institute of Cardiovascular Science, University College London, Gower Street, London, United Kingdom; Royal Free Hospital, Pond Street, London, United Kingdom
| | - Alun D Hughes
- Institute of Cardiovascular Science, University College London, Gower Street, London, United Kingdom
| | - James C Moon
- Institute of Cardiovascular Science, University College London, Gower Street, London, United Kingdom; Barts Heart Centre, St Bartholomew's Hospital, West Smithfield, London, United Kingdom
| | - Charlotte Manisty
- Institute of Cardiovascular Science, University College London, Gower Street, London, United Kingdom; Barts Heart Centre, St Bartholomew's Hospital, West Smithfield, London, United Kingdom.
| | - Peter Kellman
- National Heart, Lung, and Blood Institute, National Institutes of Health, DHHS, Bethesda, Maryland, USA.
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14
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Cosyns B, Sade LE, Gerber BL, Gimelli A, Muraru D, Maurer G, Edvardsen T. The year 2020 in the European Heart Journal-Cardiovascular Imaging: part II. Eur Heart J Cardiovasc Imaging 2021:jeab225. [PMID: 34718480 DOI: 10.1093/ehjci/jeab225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Indexed: 12/18/2022] Open
Abstract
The European Heart Journal-Cardiovascular Imaging was launched in 2012 and has during these years become one of the leading multimodality cardiovascular imaging journal. The journal is now established as one of the top cardiovascular journals and is the most important cardiovascular imaging journal in Europe. The most important studies published in our Journal from 2020 will be highlighted in two reports. Part II will focus on valvular heart disease, heart failure, cardiomyopathies, and congenital heart disease. While Part I of the review has focused on studies about myocardial function and risk prediction, myocardial ischaemia, and emerging techniques in cardiovascular imaging.
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Affiliation(s)
- Bernard Cosyns
- Department of Cardiology, CHVZ (Centrum voor Hart en Vaatziekten), ICMI (In Vivo Cellular and Molecular Imaging) Laboratory, Universitair Ziekenhuis Brussel, 101 Laarbeeklaan, 1090 Brussels, Belgium
| | - Leyla Elif Sade
- University of Pittsburgh Medical Center, Heart and Vascular Institute, University of Pittsburgh, 4200 Fifth Ave, Pittsburgh, PA 15260, USA
- Department of Cardiology, University of Baskent, Bağlıca Kampüsü, Dumlupınar Blv. 20. Km, 06810 Etimesgut/Ankara, Turkey
| | - Bernhard L Gerber
- Division of Cardiology, Department of Cardiovascular Diseases, Cliniques Universitaires St. Luc, Pôle de Recherche Cardiovasculaire (CARD), Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, Av Hippocrate 10/2806, Brussels, Belgium
| | - Alessia Gimelli
- Fondazione Toscana G. Monasterio, Via Giuseppe Moruzzi, 1, 56124 Pisa PI, Italy
| | - Denisa Muraru
- Department of Cardiac, Neurological and Metabolic Sciences, Istituto Auxologico Italiano, IRCCS, Piazzale Brescia 20, 20149 Milan, Italy
- Department of Medicine and Surgery, University of Milano-Bicocca, Via Cadore 48, 20900 Monza, Italy
| | - Gerald Maurer
- Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Spitalgasse 23, 1090 Wien, Austria
| | - Thor Edvardsen
- ProCardio Center for Innovation, Department of Cardiology, Oslo University Hospital, Rikshospitalet, Oslo Norway and Institute for clinical medicine, University of Oslo, Sognsvannsveien 9, 0372 Oslo, Norway
- KG Jebsen Cardiac Research Centre, Institute for clinical medicine, University of Oslo, Sognsvannsveien 20, NO-0424 Oslo, Norway
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15
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Wang Y, Zhong M. Bedside Evaluation of Pulmonary Embolism by Saline Contrast-enhanced Electrical Impedance Tomography: Considerations for Future Research. Am J Respir Crit Care Med 2021; 203:394-395. [PMID: 33091323 PMCID: PMC7874307 DOI: 10.1164/rccm.202009-3640le] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Yuxian Wang
- Zhongshan Hospital Affiliated to Fudan University Shanghai, China
| | - Ming Zhong
- Zhongshan Hospital Affiliated to Fudan University Shanghai, China
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16
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Houard L, Amzulescu MS, Colin G, Langet H, Militaru S, Rousseau MF, Ahn SA, Vanoverschelde JLJ, Pouleur AC, Gerber BL. Prognostic Value of Pulmonary Transit Time by Cardiac Magnetic Resonance on Mortality and Heart Failure Hospitalization in Patients With Advanced Heart Failure and Reduced Ejection Fraction. Circ Cardiovasc Imaging 2021; 14:e011680. [PMID: 33438438 DOI: 10.1161/circimaging.120.011680] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Pulmonary transit time (PTT) from first-pass perfusion imaging is a novel parameter to evaluate hemodynamic congestion by cardiac magnetic resonance (cMR). We sought to evaluate the additional prognostic value of PTT in heart failure with reduced ejection fraction over other well-validated predictors of risk including the Meta-Analysis Global Group in Chronic Heart Failure risk score and ischemic cause. METHODS We prospectively followed 410 patients with chronic heart failure with reduced ejection fraction (61±13 years, left ventricular (LV) ejection fraction 24±7%) who underwent a clinical cMR to assess the prognostic value of PTT for a primary endpoint of overall mortality and secondary composite endpoint of cardiovascular death and heart failure hospitalization. Normal reference values of PTT were evaluated in a population of 40 asymptomatic volunteers free of cardiovascular disease. Results PTT was significantly increased in patients with heart failure with reduced ejection fraction as compared to controls (9±6 beats and 7±2 beats, respectively, P<0.001), and correlated not only with New York Heart Association class, cMR-LV and cMR-right ventricular (RV) volumes, cMR-RV and cMR-LV ejection fraction, and feature tracking global longitudinal strain, but also with cardiac output. Over 6-year median follow-up, 182 patients died and 200 reached the secondary endpoint. By multivariate Cox analysis, PTT was an independent and significant predictor of both endpoints after adjustment for Meta-Analysis Global Group in Chronic Heart Failure risk score and ischemic cause. Importantly in multivariable analysis, PTT in beats had significantly higher additional prognostic value to predict not only overall mortality (χ2 to improve, 12.3; hazard ratio, 1.35 [95% CI, 1.16-1.58]; P<0.001) but also the secondary composite endpoints (χ2 to improve=20.1; hazard ratio, 1.23 [95% CI, 1.21-1.60]; P<0.001) than cMR-LV ejection fraction, cMR-RV ejection fraction, LV-feature tracking global longitudinal strain, or RV-feature tracking global longitudinal strain. Importantly, PTT was independent and complementary to both pulmonary artery pressure and reduced RV ejection fraction<42% to predict overall mortality and secondary combined endpoints. CONCLUSIONS Despite limitations in temporal resolution, PTT derived from first-pass perfusion imaging provides higher and independent prognostic information in heart failure with reduced ejection fraction than clinical and other cMR parameters, including LV and RV ejection fraction or feature tracking global longitudinal strain. Registration: URL: https://www.clinicaltrials.gov; Unique identifier: NCT03969394.
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Affiliation(s)
- Laura Houard
- Division of Cardiology, Department of Cardiovascular Diseases, Cliniques Universitaires St. Luc (L.H., M.S.A., G.C., S.M., M.F.R., S.A.A., J.-L.J.V., A.-C.P., B.L.G.).,Pôle de Recherche Cardiovasculaire (CARD), Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, Brussels, Belgium (L.H., M.S.A., S.M., M.F.R., S.A.A., J.-L.J.V., A.-C.P., B.L.G.)
| | - Mihaela S Amzulescu
- Division of Cardiology, Department of Cardiovascular Diseases, Cliniques Universitaires St. Luc (L.H., M.S.A., G.C., S.M., M.F.R., S.A.A., J.-L.J.V., A.-C.P., B.L.G.).,Pôle de Recherche Cardiovasculaire (CARD), Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, Brussels, Belgium (L.H., M.S.A., S.M., M.F.R., S.A.A., J.-L.J.V., A.-C.P., B.L.G.)
| | - Geoffrey Colin
- Division of Cardiology, Department of Cardiovascular Diseases, Cliniques Universitaires St. Luc (L.H., M.S.A., G.C., S.M., M.F.R., S.A.A., J.-L.J.V., A.-C.P., B.L.G.)
| | - Helene Langet
- Philips Clinical Research Board, Suresnes, France (H.L.)
| | - Sebastian Militaru
- Division of Cardiology, Department of Cardiovascular Diseases, Cliniques Universitaires St. Luc (L.H., M.S.A., G.C., S.M., M.F.R., S.A.A., J.-L.J.V., A.-C.P., B.L.G.).,Pôle de Recherche Cardiovasculaire (CARD), Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, Brussels, Belgium (L.H., M.S.A., S.M., M.F.R., S.A.A., J.-L.J.V., A.-C.P., B.L.G.)
| | - Michel F Rousseau
- Division of Cardiology, Department of Cardiovascular Diseases, Cliniques Universitaires St. Luc (L.H., M.S.A., G.C., S.M., M.F.R., S.A.A., J.-L.J.V., A.-C.P., B.L.G.).,Pôle de Recherche Cardiovasculaire (CARD), Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, Brussels, Belgium (L.H., M.S.A., S.M., M.F.R., S.A.A., J.-L.J.V., A.-C.P., B.L.G.)
| | - Sylvie A Ahn
- Division of Cardiology, Department of Cardiovascular Diseases, Cliniques Universitaires St. Luc (L.H., M.S.A., G.C., S.M., M.F.R., S.A.A., J.-L.J.V., A.-C.P., B.L.G.).,Pôle de Recherche Cardiovasculaire (CARD), Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, Brussels, Belgium (L.H., M.S.A., S.M., M.F.R., S.A.A., J.-L.J.V., A.-C.P., B.L.G.)
| | - Jean-Louis J Vanoverschelde
- Division of Cardiology, Department of Cardiovascular Diseases, Cliniques Universitaires St. Luc (L.H., M.S.A., G.C., S.M., M.F.R., S.A.A., J.-L.J.V., A.-C.P., B.L.G.).,Pôle de Recherche Cardiovasculaire (CARD), Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, Brussels, Belgium (L.H., M.S.A., S.M., M.F.R., S.A.A., J.-L.J.V., A.-C.P., B.L.G.)
| | - Anne-Catherine Pouleur
- Division of Cardiology, Department of Cardiovascular Diseases, Cliniques Universitaires St. Luc (L.H., M.S.A., G.C., S.M., M.F.R., S.A.A., J.-L.J.V., A.-C.P., B.L.G.).,Pôle de Recherche Cardiovasculaire (CARD), Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, Brussels, Belgium (L.H., M.S.A., S.M., M.F.R., S.A.A., J.-L.J.V., A.-C.P., B.L.G.)
| | - Bernhard L Gerber
- Division of Cardiology, Department of Cardiovascular Diseases, Cliniques Universitaires St. Luc (L.H., M.S.A., G.C., S.M., M.F.R., S.A.A., J.-L.J.V., A.-C.P., B.L.G.).,Pôle de Recherche Cardiovasculaire (CARD), Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, Brussels, Belgium (L.H., M.S.A., S.M., M.F.R., S.A.A., J.-L.J.V., A.-C.P., B.L.G.)
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