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Caobelli F, Cabrero JB, Galea N, Haaf P, Loewe C, Luetkens JA, Muscogiuri G, Francone M. Cardiovascular magnetic resonance (CMR) and positron emission tomography (PET) imaging in the diagnosis and follow-up of patients with acute myocarditis and chronic inflammatory cardiomyopathy : A review paper with practical recommendations on behalf of the European Society of Cardiovascular Radiology (ESCR). Int J Cardiovasc Imaging 2023; 39:2221-2235. [PMID: 37682416 PMCID: PMC10674005 DOI: 10.1007/s10554-023-02927-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 08/02/2023] [Indexed: 09/09/2023]
Abstract
Advanced cardiac imaging techniques such as cardiovascular magnetic resonance (CMR) and positron emission tomography (PET) are widely used in clinical practice in patients with acute myocarditis and chronic inflammatory cardiomyopathies (I-CMP). We aimed to provide a review article with practical recommendations from the European Society of Cardiovascular Radiology (ESCR), in order to guide physicians in the use and interpretation of CMR and PET in clinical practice both for acute myocarditis and follow-up in chronic forms of I-CMP.
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Affiliation(s)
- Federico Caobelli
- Department of Nuclear Medicine, Inselspital, Bern University Hospital and University of Bern, Freiburgstrasse 18, Bern, 3000, Switzerland.
| | | | - Nicola Galea
- Department of Radiological, Oncological and Pathological Sciences, Sapienza University of Rome, Viale Regina Elena 324, Rome, 00161, Italy
| | - Philip Haaf
- Department of Cardiology, Cardiovascular Research Institute Basel (CRIB), University Hospital Basel, and University of Basel, Petersgraben 4, Basel, CH-4031, Switzerland
| | - Christian Loewe
- Division of Cardiovascular and Interventional Radiology, Department of Bioimaging and Image-Guided Therapy, Medical University Vienna, Spitalgasse 9, Vienna, A-1090, Austria
| | - Julian A Luetkens
- Department of Diagnostic and Interventional Radiology, University Hospital Bonn, Venusberg-Campus 1, 53127, Bonn, Germany
| | | | - Marco Francone
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, Pieve Emanuele, Milan, 20072, Italy
- IRCCS Humanitas Research Hospital, Via Manzoni 56, Rozzano, Milan, 20089, Italy
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2
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Bansal M, Mehta A, Machanahalli Balakrishna A, Kalyan Sundaram A, Kanwar A, Singh M, Vallabhajosyula S. RIGHT VENTRICULAR DYSFUNCTION IN SEPSIS: AN UPDATED NARRATIVE REVIEW. Shock 2023; 59:829-837. [PMID: 36943772 DOI: 10.1097/shk.0000000000002120] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
ABSTRACT Sepsis is a multisystem disease process, which constitutes a significant public health challenge and is associated with high morbidity and mortality. Among other systems, sepsis is known to affect the cardiovascular system, which may manifest as myocardial injury, arrhythmias, refractory shock, and/or septic cardiomyopathy. Septic cardiomyopathy is defined as the reversible systolic and/or diastolic dysfunction of one or both ventricles. Left ventricle dysfunction has been extensively studied in the past, and its prognostic role in patients with sepsis is well documented. However, there is relatively scarce literature on right ventricle (RV) dysfunction and its role. Given the importance of timely detection of septic cardiomyopathy and its bearing on prognosis of patients, the role of RV dysfunction has come into renewed focus. Hence, through this review, we sought to describe the pathophysiology of RV dysfunction in sepsis and what have we learnt so far about its multifactorial nature. We also elucidate the roles of different biomarkers for its detection and prognosis, along with appropriate management of such patient population.
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Affiliation(s)
- Mridul Bansal
- Section of Cardiovascular Medicine, Department of Medicine, Wake Forest University School of Medicine, Winston-Salem, North Carolina
| | - Aryan Mehta
- Section of Cardiovascular Medicine, Department of Medicine, Wake Forest University School of Medicine, Winston-Salem, North Carolina
| | | | - Arvind Kalyan Sundaram
- Section of Cardiovascular Medicine, Department of Medicine, UMass Chan-Baystate Medical Center, Springfield, Massachusetts
| | | | - Mandeep Singh
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota
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3
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Zorzi A, Mattesi G, Baldi E, Toniolo M, Guerra F, Cauti FM, Cipriani A, De Lazzari M, Muser D, Stronati G, Marcantoni L, Manfrin M, Calò L, Lanzillo C, Perazzolo Marra M, Savastano S, Corrado D. Prognostic Role of Myocardial Edema as Evidenced by Early Cardiac Magnetic Resonance in Survivors of Out-of-Hospital Cardiac Arrest: A Multicenter Study. J Am Heart Assoc 2021; 10:e021861. [PMID: 34779249 PMCID: PMC8751964 DOI: 10.1161/jaha.121.021861] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Sudden cardiac arrest (SCA) may be caused by an acute and reversible myocardial injury, a chronic and irreversible myocardial damage, or a primary ventricular arrhythmia. Cardiac magnetic resonance imaging may identify myocardial edema (ME), which denotes acute and reversible myocardial damage. We evaluated the arrhythmic outcome of SCA survivors during follow-up and tested the prognostic role of ME. Methods and Results We included a consecutive series of 101 (71% men, median age 47 years) SCA survivors from 9 collaborative centers who underwent early (<1 month) cardiac magnetic resonance imaging and received an implantable cardioverter-defibrillator (ICD). On T2-weighted sequences, ME was found in 18 of 101 (18%) patients. According to cardiac magnetic resonance imaging findings, the arrhythmic SCA was ascribed to acute myocardial injury (either ischemic [n=10] or inflammatory [n=8]), to chronic structural heart diseases (ischemic heart disease [n=11], cardiomyopathy [n=20], or other [n=23]), or to primarily arrhythmic syndrome (n=29). During a follow-up of 47 months (28 to 67 months), 24 of 101 (24%) patients received an appropriate ICD intervention. ME was associated with a significantly higher survival free from both any ICD interventions (log-rank=0.04) and ICD shocks (log-rank=0.03) and remained an independent predictor of better arrhythmic outcome after adjustment for left ventricular ejection fraction and late gadolinium enhancement. The risk of appropriate ICD intervention was unrelated to the type of underlying heart disease. Conclusions ME on early cardiac magnetic resonance imaging, which denotes an acute and transient arrhythmogenic substrate, predicted a favorable long-term arrhythmic outcome of SCA survivors. These findings may have a substantial impact on future guidelines on the management of SCA survivors.
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Affiliation(s)
- Alessandro Zorzi
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health University of Padua Italy
| | - Giulia Mattesi
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health University of Padua Italy
| | - Enrico Baldi
- Section of Cardiology Department of Molecular Medicine University of Pavia Italy.,Cardiac Intensive Care Unit Arrhythmia and Electrophysiology and Experimental Cardiology Fondazione IRCCS Policlinico San Matteo Pavia Italy
| | - Mauro Toniolo
- Cardiothoracic Department University Hospital of Udine Udine Italy
| | - Federico Guerra
- Cardiology and Arrhythmology Clinic Marche Polytechnic UniversityUniversity Hospital "Ospedali Riuniti Umberto I - Lancisi - Salesi" Ancona Italy
| | - Filippo Maria Cauti
- Arrhythmology Unit Cardiology Division S. Giovanni Calibita Hospital Isola Tiberina, Rome Italy
| | - Alberto Cipriani
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health University of Padua Italy
| | - Manuel De Lazzari
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health University of Padua Italy
| | - Daniele Muser
- Cardiothoracic Department University Hospital of Udine Udine Italy
| | - Giulia Stronati
- Cardiology and Arrhythmology Clinic Marche Polytechnic UniversityUniversity Hospital "Ospedali Riuniti Umberto I - Lancisi - Salesi" Ancona Italy
| | - Lina Marcantoni
- Arrhythmia and Electrophysiology Unit Cardiology Department Santa Maria Della Misericordia Hospital Rovigo Italy
| | - Massimiliano Manfrin
- Electrophysiology and Cardiac Pacing Unit San Maurizio Regional Hospital Bolzano Italy
| | - Leonardo Calò
- Cardiology Department Policlinico Casilino Rome Italy
| | | | - Martina Perazzolo Marra
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health University of Padua Italy
| | - Simone Savastano
- Division of Cardiology Fondazione IRCCS Policlinico San Matteo Pavia Italy
| | - Domenico Corrado
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health University of Padua Italy
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Leiner T, Bogaert J, Friedrich MG, Mohiaddin R, Muthurangu V, Myerson S, Powell AJ, Raman SV, Pennell DJ. SCMR Position Paper (2020) on clinical indications for cardiovascular magnetic resonance. J Cardiovasc Magn Reson 2020; 22:76. [PMID: 33161900 PMCID: PMC7649060 DOI: 10.1186/s12968-020-00682-4] [Citation(s) in RCA: 144] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 09/18/2020] [Indexed: 12/22/2022] Open
Abstract
The Society for Cardiovascular Magnetic Resonance (SCMR) last published its comprehensive expert panel report of clinical indications for CMR in 2004. This new Consensus Panel report brings those indications up to date for 2020 and includes the very substantial increase in scanning techniques, clinical applicability and adoption of CMR worldwide. We have used a nearly identical grading system for indications as in 2004 to ensure comparability with the previous report but have added the presence of randomized controlled trials as evidence for level 1 indications. In addition to the text, tables of the consensus indication levels are included for rapid assimilation and illustrative figures of some key techniques are provided.
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Affiliation(s)
- Tim Leiner
- Department of Radiology, E.01.132, Utrecht University Medical Center, Heidelberglaan 100, 3584CX, Utrecht, The Netherlands.
| | - Jan Bogaert
- Department of Radiology, University Hospitals Leuven, Leuven, Belgium
- Department of Imaging and Pathology, Catholic University Leuven, Herestraat 49, 3000, Leuven, Belgium
| | - Matthias G Friedrich
- Departments of Medicine and Diagnostic Radiology, McGill University, 1001 Decarie Blvd., Montreal, QC, H4A 3J1, Canada
| | - Raad Mohiaddin
- Department of Radiology, Royal Brompton Hospital, Sydney Street, Chelsea, London, SW3 6NP, UK
- National Heart and Lung Institute, Imperial College, South Kensington Campus, London, SW7 2AZ, UK
| | - Vivek Muthurangu
- Centre for Cardiovascular Imaging, Science & Great Ormond Street Hospital for Children, UCL Institute of Cardiovascular, Great Ormond Street, London, WC1N 3JH, UK
| | - Saul Myerson
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, Oxford Centre for Clinical Magnetic Resonance Research (OCMR), University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DU, UK
| | - Andrew J Powell
- Department of Cardiology, Boston Children's Hospital, 300 Longwood Avenue, Farley, 2nd Floor, Boston, MA, 02115, USA
- Department of Pediatrics, Harvard Medical School, 300 Longwood Avenue, Farley, 2nd Floor, Boston, MA, 02115, USA
| | - Subha V Raman
- Krannert Institute of Cardiology, Indiana University School of Medicine, 340 West 10th Street, Fairbanks Hall, Suite 6200, Indianapolis, IN, 46202-3082, USA
| | - Dudley J Pennell
- Royal Brompton Hospital, Sydney Street, Chelsea, London, SW3 6NP, UK
- Imperial College, South Kensington Campus, London, SW7 2AZ, UK
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Myocardial Fluid Balance and Pathophysiology of Myocardial Edema in Coronary Artery Bypass Grafting. Cardiol Res Pract 2020; 2020:3979630. [PMID: 32550020 PMCID: PMC7256715 DOI: 10.1155/2020/3979630] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 05/05/2020] [Indexed: 12/11/2022] Open
Abstract
Myocardial edema is one of the most common complications of coronary artery bypass grafting (CABG) that is linearly related to many coronary artery diseases. Myocardial edema can cause several consequences including systolic dysfunction, diastolic dysfunction, arrhythmia, and cardiac tissue fibrosis that can increase mortality in CABG. Understanding myocardial fluid balance and tissue and systemic fluid regulation is crucial in order to ultimately link how coronary artery bypass grafting can cause myocardial edema in such a setting. The identification of susceptible patients by using imaging modalities is still challenging. Future studies about the technique of imaging modalities, examination protocols, prevention, and treatment of myocardial edema should be carried out, in order to limit myocardial edema occurrence and prevent complications.
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Göransson C, Ahtarovski KA, Kyhl K, Lønborg J, Nepper-Christensen L, Bertelsen L, Ghotbi AA, Schoos MM, Køber L, Høfsten D, Helqvist S, Kelbæk H, Engstrøm T, Vejlstrup N. Assessment of the myocardial area at risk: comparing T2-weighted cardiovascular magnetic resonance imaging with contrast-enhanced cine (CE-SSFP) imaging—a DANAMI3 substudy. Eur Heart J Cardiovasc Imaging 2018; 20:361-366. [DOI: 10.1093/ehjci/jey106] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 05/01/2018] [Accepted: 07/04/2018] [Indexed: 12/16/2022] Open
Affiliation(s)
- Christoffer Göransson
- Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, Copenhagen, Denmark
| | - Kiril Aleksov Ahtarovski
- Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, Copenhagen, Denmark
| | - Kasper Kyhl
- Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, Copenhagen, Denmark
| | - Jacob Lønborg
- Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, Copenhagen, Denmark
| | - Lars Nepper-Christensen
- Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, Copenhagen, Denmark
| | - Litten Bertelsen
- Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, Copenhagen, Denmark
| | - Adam Ali Ghotbi
- Department of Clinical Physiology, Nuclear Medicine & PET, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, Copenhagen, Denmark
| | - Mikkel Malby Schoos
- Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, Copenhagen, Denmark
| | - Lars Køber
- Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, Copenhagen, Denmark
| | - Dan Høfsten
- Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, Copenhagen, Denmark
| | - Steffen Helqvist
- Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, Copenhagen, Denmark
| | - Henning Kelbæk
- Department of Cardiology, Zealand University Hospital, Sygehusvej 10, Roskilde, Denmark
| | - Thomas Engstrøm
- Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, Copenhagen, Denmark
| | - Niels Vejlstrup
- Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, Copenhagen, Denmark
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7
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Schindler TH. Cardiovascular PET/MR imaging: Quo Vadis? J Nucl Cardiol 2017; 24:1007-1018. [PMID: 27659454 DOI: 10.1007/s12350-016-0451-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Accepted: 02/08/2016] [Indexed: 12/30/2022]
Abstract
With the recent advent of PET/MRI scanners, the combination of molecular imaging with a variety of known and novel PET radiotracers, the high spatial resolution of MRI, and its potential for multi-parametric imaging are anticipated to increase the diagnostic accuracy in cardiovascular disease detection, while providing novel mechanistic insights into the initiation and progression of the disease state. For the time being, cardiac PET/MRI emerges as potential clinical tool in the identification and characterization of infiltrative cardiac diseases, such as sarcoidosis, acute or chronic myocarditis, and cardiac tumors, respectively. The application of PET/MRI in conjunction with various radiotracer probes in the identification of the vulnerable atherosclerotic plaque also holds much promise but needs further translation and validation in clinical investigations. The combination of molecular imaging and creation of multi-parametric imaging maps with PET/MRI, however, are likely to set new horizons to develop predictive parameters for myocardial recovery and treatment response in ischemic and non-ischemic cardiomyopathy patients. Molecular imaging and multi-parametric imaging in cardiovascular disease with PET/MRI at current stage are at its infancy but bear a bright future.
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Affiliation(s)
- Thomas Hellmut Schindler
- Department of Radiology and Radiological Science, Division of Nuclear Medicine, Nuclear Cardiovascular Medicine, Johns Hopkins University School of Medicine, 3225, 601 N. Caroline Street, Baltimore, MD, 21287, USA.
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8
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Schindler TH. Cardiovascular PET/MR: "Not the end but the beginning". J Nucl Cardiol 2017; 24:1098-1100. [PMID: 28127686 DOI: 10.1007/s12350-017-0784-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 01/05/2017] [Indexed: 10/20/2022]
Affiliation(s)
- Thomas Hellmut Schindler
- Division of Nuclear Medicine, Cardiovascular Nuclear Medicine, Department of Radiology and Radiological Science SOM, JHOC, Johns Hopkins University School of Medicine, 3225, 601 N. Caroline Street, Baltimore, MD, 21287, USA.
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Mavrogeni S, Markousis-Mavrogenis G, Koutsogeorgopoulou L, Dimitroulas T, Bratis K, Kitas GD, Sfikakis P, Tektonidou M, Karabela G, Stavropoulos E, Katsifis G, Boki KA, Kitsiou A, Filaditaki V, Gialafos E, Plastiras S, Vartela V, Kolovou G. Cardiovascular magnetic resonance imaging pattern at the time of diagnosis of treatment naïve patients with connective tissue diseases. Int J Cardiol 2017; 236:151-156. [PMID: 28185705 DOI: 10.1016/j.ijcard.2017.01.104] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2016] [Accepted: 01/17/2017] [Indexed: 12/23/2022]
Abstract
BACKGROUND-AIM Cardiac involvement at diagnosis of connective tissue disease (CTD) has been described by echocardiography. We hypothesized that cardio-vascular magnetic resonance (CMR) detects occult lesions at CTD diagnosis. PATIENTS-METHODS CMR was performed early after diagnosis in 78 treatment-naïve CTDs (aged 43±11, 59F/19M) without cardiac involvement [5 Takayasu arteritis (TA), 4 Churg Strauss syndrome (CSS), 5 Wegener granulomatosis (WG), 16 systemic lupus erythematosus (SLE), 12 rheumatoid arthritis (RA), 8 mixed connective tissue diseases (MCTD), 12 ankylosing spondylitis (AS), 3 polymyalgia rheumatica (PMR), 8 systemic sclerosis (SSc) and 5 dermatomyositis (DM)]. Acute and chronic lesions were assessed by T2>2 with positive LGE and T2<2 with positive LGE, respectively. RESULTS In 3/5 TA, 3/4 CSS, 4/5 WG, 10/16 SLE, 9/12 RA, 6/8 MCTD, 4/12 AS, 1/3 PMR, 2/8 SSc and 2/5 DM, the T2 ratio was higher compared to normal (2.78±0.25 vs 1.5±0.2, p<0.01). Myocarditis was identified in 1 TA, 1 SLE, 1 RA, 1 SSc and 2 DM patients; diffuse, subendocardial fibrosis in 1 CSS and 1 RA patient, while subendocardial myocardial infarction in 3 SLE, 1 MCTD, 1 PMR and 2 RA patients. CMR re-evaluation after 6 and 12months of rheumatic and cardiac treatment, available in 28/52 CTDs with increased T2 ratio, showed significant improvement in T2 ratio (p<0.001), non-significant change in LGE extent and normalisation of those with impaired LV function. CONCLUSIONS Occult CMR lesions, including oedema, myocarditis, diffuse subendocardial fibrosis and myocardial infarction are not unusual in treatment naïve CTDs and may be reversed with appropriate treatment.
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Affiliation(s)
| | | | | | - Theodoros Dimitroulas
- Department of Rheumatology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | | | - George D Kitas
- Arthritis Research UK Epidemiology Unit, University of Manchester, Manchester, UK
| | - Petros Sfikakis
- Joint Academic Rheumatology Program, National and Kapodistrian University of Athens Medical School, Greece
| | - Maria Tektonidou
- Joint Academic Rheumatology Program, National and Kapodistrian University of Athens Medical School, Greece
| | | | | | | | | | | | | | - Elias Gialafos
- Joint Academic Rheumatology Program, National and Kapodistrian University of Athens Medical School, Greece
| | - Sotiris Plastiras
- Department of Pathophysiology, School of Medicine, University of Athens, Athens, Greece
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10
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A feasible and automatic free tool for T1 and ECV mapping. Phys Med 2017; 33:47-55. [DOI: 10.1016/j.ejmp.2016.12.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 10/28/2016] [Accepted: 12/04/2016] [Indexed: 11/22/2022] Open
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Nensa F, Beiderwellen K, Heusch P, Wetter A. Clinical applications of PET/MRI: current status and future perspectives. Diagn Interv Radiol 2015; 20:438-47. [PMID: 25010371 DOI: 10.5152/dir.2014.14008] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Fully integrated positron emission tomography (PET)/magnetic resonance imaging (MRI) scanners have been available for a few years. Since then, the number of scanner installations and published studies have been growing. While feasibility of integrated PET/MRI has been demonstrated for many clinical and preclinical imaging applications, now those applications where PET/MRI provides a clear benefit in comparison to the established reference standards need to be identified. The current data show that those particular applications demanding multiparametric imaging capabilities, high soft tissue contrast and/or lower radiation dose seem to benefit from this novel hybrid modality. Promising results have been obtained in whole-body cancer staging in non-small cell lung cancer and multiparametric tumor imaging. Furthermore, integrated PET/MRI appears to have added value in oncologic applications requiring high soft tissue contrast such as assessment of liver metastases of neuroendocrine tumors or prostate cancer imaging. Potential benefit of integrated PET/MRI has also been demonstrated for cardiac (i.e., myocardial viability, cardiac sarcoidosis) and brain (i.e., glioma grading, Alzheimer's disease) imaging, where MRI is the predominant modality. The lower radiation dose compared to PET/computed tomography will be particularly valuable in the imaging of young patients with potentially curable diseases.However, further clinical studies and technical innovation on scanner hard- and software are needed. Also, agreements on adequate refunding of PET/MRI examinations need to be reached. Finally, the translation of new PET tracers from preclinical evaluation into clinical applications is expected to foster the entire field of hybrid PET imaging, including PET/MRI.
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Affiliation(s)
- Felix Nensa
- Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany.
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12
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Nguyen TL, Phan JAK, Hee L, Moses DA, Otton J, Terreblanche OD, Xiong J, Premawardhana U, Rajaratnam R, Juergens CP, Dimitri HR, French JK, Richards DAB, Thomas L. High-sensitivity troponin T predicts infarct scar characteristics and adverse left ventricular function by cardiac magnetic resonance imaging early after reperfused acute myocardial infarction. Am Heart J 2015; 170:715-725.e2. [PMID: 26386795 DOI: 10.1016/j.ahj.2015.06.022] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Accepted: 06/22/2015] [Indexed: 11/29/2022]
Abstract
BACKGROUND Late gadolinium enhancement cardiac magnetic resonance imaging (CMRI) is the current standard for evaluation of myocardial infarct scar size and characteristics. Because post-ST-segment elevation myocardial infarction (STEMI) troponin levels correlate with clinical outcomes, we sought to determine the sampling period for high-sensitivity troponin T (hs-TnT) that would best predict CMRI-measured infarct scar characteristics and left ventricular (LV) function. METHODS AND RESULTS Among 201 patients with first presentation with STEMI who were prospectively recruited, we measured serial hs-TnT levels at admission, peak, 24 hours, 48 hours, and 72 hours after STEMI. Indexed LV volumes, LV ejection fraction (LVEF) and infarct scar characteristics (scar size, scar heterogeneity, myocardial salvage index, and microvascular obstruction) were evaluated by CMRI at a median of 4 days post-STEMI. Peak and serial hs-TnT levels correlated positively with early indexed LV volumes and infarct scar characteristics, and negatively correlated with myocardial salvage index and LVEF. Both 48- and 72-hour hs-TnT levels similarly predicted "large" total infarct scar size (odds ratios [ORs] 3.08 and 3.53, both P < .001), myocardial salvage index (ORs 1.68 and 2.30, both P < .001), and LVEF <40% (ORs 2.16 and 2.17, both P < .001) on univariate analyses. On multivariate analyses, 48- and 72-hour hs-TnT levels independently predicted large infarct scar size (ORs 2.05 and 2.31, both P < .001), reduced myocardial salvage index (OR 1.39 [P = .031] and OR 1.55 [P = .009]), and LVEF <40% (OR 1.47 [P = .018] and OR 1.43 [P = .026]). All measured hs-TnT levels had a modest association and similar capacity to predict microvascular obstruction. CONCLUSIONS Levels of hs-TnT at 48 and 72 hours, measured during the "plateau phase" post-STEMI, predicted infarct scar size, poor myocardial salvage, and LVEF. These levels also correlated with scar heterogeneity and microvascular obstruction post-STEMI. Since ascertaining peak levels after STEMI is challenging in routine practice, based on the biphasic kinetics of hs-TnT, a measurement at 48 to 72 hours (during the plateau phase) provides a useful and simple method for early evaluation of LV function and infarct scar characteristics.
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Affiliation(s)
- Tuan L Nguyen
- Cardiology Department, Liverpool Hospital, Sydney, New South Wales, Australia; South Western Sydney Clinical School, The University of NSW, Sydney, New South Wales, Australia.
| | - Justin A K Phan
- Cardiology Department, Liverpool Hospital, Sydney, New South Wales, Australia; South Western Sydney Clinical School, The University of NSW, Sydney, New South Wales, Australia
| | - Leia Hee
- Cardiology Department, Liverpool Hospital, Sydney, New South Wales, Australia; South Western Sydney Clinical School, The University of NSW, Sydney, New South Wales, Australia
| | - Daniel A Moses
- South Western Sydney Clinical School, The University of NSW, Sydney, New South Wales, Australia; Radiology Department, Liverpool Hospital, Sydney, New South Wales, Australia
| | - James Otton
- Cardiology Department, Liverpool Hospital, Sydney, New South Wales, Australia; South Western Sydney Clinical School, The University of NSW, Sydney, New South Wales, Australia
| | - Owen D Terreblanche
- Radiology Department, Liverpool Hospital, Sydney, New South Wales, Australia
| | - Jessica Xiong
- South Western Sydney Clinical School, The University of NSW, Sydney, New South Wales, Australia
| | - Upul Premawardhana
- Cardiology Department, Liverpool Hospital, Sydney, New South Wales, Australia; South Western Sydney Clinical School, The University of NSW, Sydney, New South Wales, Australia; School of Medicine, University of Western Sydney, Campbelltown, New South Wales, Australia
| | - Rohan Rajaratnam
- Cardiology Department, Liverpool Hospital, Sydney, New South Wales, Australia; South Western Sydney Clinical School, The University of NSW, Sydney, New South Wales, Australia; School of Medicine, University of Western Sydney, Campbelltown, New South Wales, Australia
| | - Craig P Juergens
- Cardiology Department, Liverpool Hospital, Sydney, New South Wales, Australia; South Western Sydney Clinical School, The University of NSW, Sydney, New South Wales, Australia
| | - Hany R Dimitri
- Cardiology Department, Liverpool Hospital, Sydney, New South Wales, Australia; South Western Sydney Clinical School, The University of NSW, Sydney, New South Wales, Australia
| | - John K French
- Cardiology Department, Liverpool Hospital, Sydney, New South Wales, Australia; South Western Sydney Clinical School, The University of NSW, Sydney, New South Wales, Australia
| | - David A B Richards
- Cardiology Department, Liverpool Hospital, Sydney, New South Wales, Australia; South Western Sydney Clinical School, The University of NSW, Sydney, New South Wales, Australia
| | - Liza Thomas
- Cardiology Department, Liverpool Hospital, Sydney, New South Wales, Australia; South Western Sydney Clinical School, The University of NSW, Sydney, New South Wales, Australia
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Bruguier C, Egger C, Vallée JP, Grimm J, Boulanger X, Jackowski C, Mangin P, Grabherr S. Postmortem magnetic resonance imaging of the heart ex situ: development of technical protocols. Int J Legal Med 2014; 129:559-67. [DOI: 10.1007/s00414-014-1058-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 07/30/2014] [Indexed: 12/27/2022]
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Zhang J, He S, Qi X, Li Y. Combined electrocardiography, coronary angiography and magnetic resonance imaging for the diagnosis of viral myocarditis: A case report. Exp Ther Med 2014; 7:1643-1646. [PMID: 24926359 PMCID: PMC4043629 DOI: 10.3892/etm.2014.1671] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2013] [Accepted: 03/14/2014] [Indexed: 12/30/2022] Open
Abstract
Endomyocardial biopsy is the gold standard for diagnosing viral myocarditis. However, this method is rarely used as it is more invasive, less sensitive and has a higher incidence of complications than other methods. With recent developments in myocarditis research, cardiovascular nuclear magnetic resonance imaging has been demonstrated to have a marked advantage over endomyocardial biopsy, specifically regarding the differential diagnosis of acute coronary syndrome, as it is noninvasive, repeatable, highly sensitive and highly specific for diagnosing myocarditis. Myocardial edema is characteristic of myocardial inflammation, myocardial necrosis and myocardial fibrosis. T2-weighted nuclear magnetic resonance imaging sensitively detects myocardial tissue edema and additional imaging parameters contribute to the diagnosis of myocarditis. Therefore, combining these methods with the current sophisticated electrocardiogram and coronary angiography examination methods may facilitate the rapid and accurate assessment of viral myocarditis. A 44-year-old male patient with symptoms of dyspnea and shortness of breath accompanied by dizziness, through electrocardiography, coronary angiography and magnetic resonance imaging, was diagnosed viral myocarditis.
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Affiliation(s)
- Jing Zhang
- Department of Cardiology, Northern Jiangsu People's Hospital, Medical College of Yangzhou University, Yangzhou, Jiangsu 225001, P.R. China
| | - Shenghu He
- Department of Cardiology, Northern Jiangsu People's Hospital, Medical College of Yangzhou University, Yangzhou, Jiangsu 225001, P.R. China
| | - Xiang Qi
- Department of Cardiology, Northern Jiangsu People's Hospital, Medical College of Yangzhou University, Yangzhou, Jiangsu 225001, P.R. China
| | - Yimin Li
- Department of Cardiology, Nanjing Chest Hospital, Nanjing, Jiangsu 210000, P.R. China
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Krishnamurthy R, Li K, Pednekar A, Cheong B, Muthupillai R. Quantitative evaluation of scar, area at risk, and wall thickening in a porcine model of sub-acute myocardial infarction (MI). J Cardiovasc Magn Reson 2013. [PMCID: PMC3559761 DOI: 10.1186/1532-429x-15-s1-p213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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