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Pizzino F, Furini G, Casieri V, Mariani M, Bianchi G, Storti S, Chiappino D, Maffei S, Solinas M, Aquaro GD, Lionetti V. Late plasma exosome microRNA-21-5p depicts magnitude of reverse ventricular remodeling after early surgical repair of primary mitral valve regurgitation. Front Cardiovasc Med 2022; 9:943068. [PMID: 35966562 PMCID: PMC9373041 DOI: 10.3389/fcvm.2022.943068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 07/04/2022] [Indexed: 12/11/2022] Open
Abstract
Introduction Primary mitral valve regurgitation (MR) results from degeneration of mitral valve apparatus. Mechanisms leading to incomplete postoperative left ventricular (LV) reverse remodeling (Rev-Rem) despite timely and successful surgical mitral valve repair (MVR) remain unknown. Plasma exosomes (pEXOs) are smallest nanovesicles exerting early postoperative cardioprotection. We hypothesized that late plasma exosomal microRNAs (miRs) contribute to Rev-Rem during the late postoperative period. Methods Primary MR patients (n = 19; age, 45-71 years) underwent cardiac magnetic resonance imaging and blood sampling before (T0) and 6 months after (T1) MVR. The postoperative LV Rev-Rem was assessed in terms of a decrease in LV end-diastolic volume and patients were stratified into high (HiR-REM) and low (LoR-REM) LV Rev-Rem subgroups. Isolated pEXOs were quantified by nanoparticle tracking analysis. Exosomal microRNA (miR)-1, -21-5p, -133a, and -208a levels were measured by RT-qPCR. Anti-hypertrophic effects of pEXOs were tested in HL-1 cardiomyocytes cultured with angiotensin II (AngII, 1 μM for 48 h). Results Surgery zeroed out volume regurgitation in all patients. Although preoperative pEXOs were similar in both groups, pEXO levels increased after MVR in HiR-REM patients (+0.75-fold, p = 0.016), who showed lower cardiac mass index (-11%, p = 0.032). Postoperative exosomal miR-21-5p values of HiR-REM patients were higher than other groups (p < 0.05). In vitro, T1-pEXOs isolated from LoR-REM patients boosted the AngII-induced cardiomyocyte hypertrophy, but not postoperative exosomes of HiR-REM. This adaptive effect was counteracted by miR-21-5p inhibition. Summary/Conclusion High levels of miR-21-5p-enriched pEXOs during the late postoperative period depict higher LV Rev-Rem after MVR. miR-21-5p-enriched pEXOs may be helpful to predict and to treat incomplete LV Rev-Rem after successful early surgical MVR.
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Affiliation(s)
- Fausto Pizzino
- Unit of Translational Critical Care Medicine, Scuola Superiore Sant'Anna, Pisa, Italy.,Fondazione Toscana Gabriele Monasterio, Pisa, Italy
| | - Giulia Furini
- Unit of Translational Critical Care Medicine, Scuola Superiore Sant'Anna, Pisa, Italy
| | - Valentina Casieri
- Unit of Translational Critical Care Medicine, Scuola Superiore Sant'Anna, Pisa, Italy
| | | | | | | | | | | | | | | | - Vincenzo Lionetti
- Unit of Translational Critical Care Medicine, Scuola Superiore Sant'Anna, Pisa, Italy.,Fondazione Toscana Gabriele Monasterio, Pisa, Italy
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Vermes E, Iacuzio L, Levy F, Bohbot Y, Renard C, Gerber B, Maréchaux S, Tribouilloy C. Role of Cardiovascular Magnetic Resonance in Native Valvular Regurgitation: A Comprehensive Review of Protocols, Grading of Severity, and Prediction of Valve Surgery. Front Cardiovasc Med 2022; 9:881141. [PMID: 35872899 PMCID: PMC9300884 DOI: 10.3389/fcvm.2022.881141] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 06/07/2022] [Indexed: 11/15/2022] Open
Abstract
Valvular regurgitation is common in developed countries with an increasing prevalence due to the aging of the population and more accurate diagnostic imaging methods. Echocardiography is the gold standard method for the assessment of the severity of valvular heart regurgitation. Nonetheless, cardiovascular magnetic resonance (CMR) has emerged as an additional tool for assessing mainly the severity of aortic and mitral valve regurgitation in the setting of indeterminate findings by echocardiography. Moreover, CMR is a valuable imaging modality to assess ventricular volume and flow, which are useful in the calculation of regurgitant volume and regurgitant fraction of mitral valve regurgitation, aortic valve regurgitation, tricuspid valve regurgitation, and pulmonary valve regurgitation. Notwithstanding this, reference values and optimal thresholds to determine the severity and prognosis of valvular heart regurgitation have been studied lesser by CMR than by echocardiography. Hence, further larger studies are warranted to validate the potential prognostic relevance of the severity of valvular heart regurgitation determined by CMR. The present review describes, analyzes, and discusses the use of CMR to determine the severity of valvular heart regurgitation in clinical practice.
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Affiliation(s)
- Emmanuelle Vermes
- Department of Cardiology, Amiens University Hospital, Amiens, France
- *Correspondence: Emmanuelle Vermes,
| | - Laura Iacuzio
- Department of Cardiology, Center Cardio-Thoracique de Monaco, Monaco, Monaco
| | - Franck Levy
- Department of Cardiology, Center Cardio-Thoracique de Monaco, Monaco, Monaco
| | - Yohann Bohbot
- Department of Cardiology, Amiens University Hospital, Amiens, France
- UR UPJV 7517, Jules Verne University of Picardie, Amiens, France
| | - Cédric Renard
- Department of Radiology, Amiens University Hospital, Amiens, France
| | - Bernhard 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, Brussels, Belgium
| | - Sylvestre Maréchaux
- Department of Cardiology, Heart Valve Center, Lille Catholic University Hospital, Lille, France
| | - Christophe Tribouilloy
- Department of Cardiology, Amiens University Hospital, Amiens, France
- UR UPJV 7517, Jules Verne University of Picardie, Amiens, France
- Christophe Tribouilloy,
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53
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Zhang Y, Li XM, Shen MT, Huang S, Li Y, Yang ZG. Atrioventricular coupling and left atrial abnormality in type 2 diabetes mellitus with functional mitral regurgitation patients verified by cardiac magnetic resonance imaging. Cardiovasc Diabetol 2022; 21:100. [PMID: 35681217 PMCID: PMC9185866 DOI: 10.1186/s12933-022-01536-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 05/30/2022] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Functional mitral regurgitation (FMR) in type 2 diabetes mellitus (T2DM) patients induced by left ventricular (LV) enlargement and mitral valve abnormality may aggravated the impairment in left atrial (LA) compliance. Thus, this study aimed to depict how FMR and LV dysfunction affect LA compliance in T2DM patients with FMR. MATERIALS AND METHODS A total of 148 patients with T2DM and 49 age- and sex-matched normal controls underwent cardiac magnetic resonance examination. LA longitudinal strain and LA and LV functional indices were compared among controls and different T2DM patients. The multivariate analysis was used to identify the independent indicators of LA longitudinal strain. RESULTS T2DM Patients without FMR had a lower total LA empty fraction (LAEF) compared with the controls (all P < 0.05). T2DM patients with mild and moderate FMR showed increased LA volume (LAV) and LV volume while decreased LAEF, LA strain, and LV ejection fraction (P < 0.05). T2DM patients with severe FMR showed markedly increased LAV and LV volume while decreased LAEF, LA strain, and LVEF (P < 0.05). In T2DM patients with FMR, reservoir strain (εs) was independently correlated with LV end-diastolic volume (LVEDV) (β = - 0.334) and regurgitation degree (β = - 0.256). The passive strain (εe) was independently correlated with regurgitation degree (β = - 0.297), whereas the active strain (εa) was independently correlated with LVESV (β = - 0.352) and glycated haemoglobin (β = - 0.279). CONCLUSION FMR may aggravate LA and LV dysfunction in T2DM patients. Regurgitation degree was an independent determinant of the εs and the εe, LVEDV was an independent determinant of the εs, and LVESV was an independent determinant of the εa in T2DM patients with FMR.
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Affiliation(s)
- Yi Zhang
- Department of Radiology, West China Hospital, Sichuan University, 37# Guo Xue Xiang, Chengdu, 610041, Sichuan, China.,Department of Radiology, School of Medicine, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, University of Electronic Science and Technology of China, 55# Lan 4 RenMing Road (South), Chengdu, 610041, Sichuan, China
| | - Xue-Ming Li
- Department of Radiology, West China Hospital, Sichuan University, 37# Guo Xue Xiang, Chengdu, 610041, Sichuan, China.,Department of Radiology, School of Medicine, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, University of Electronic Science and Technology of China, 55# Lan 4 RenMing Road (South), Chengdu, 610041, Sichuan, China
| | - Meng-Ting Shen
- Department of Radiology, West China Hospital, Sichuan University, 37# Guo Xue Xiang, Chengdu, 610041, Sichuan, China
| | - Shan Huang
- Department of Radiology, West China Hospital, Sichuan University, 37# Guo Xue Xiang, Chengdu, 610041, Sichuan, China
| | - Yuan Li
- Department of Radiology, West China Hospital, Sichuan University, 37# Guo Xue Xiang, Chengdu, 610041, Sichuan, China
| | - Zhi-Gang Yang
- Department of Radiology, West China Hospital, Sichuan University, 37# Guo Xue Xiang, Chengdu, 610041, Sichuan, China.
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Assadi H, Grafton-Clarke C, Demirkiran A, van der Geest RJ, Nijveldt R, Flather M, Swift AJ, Vassiliou VS, Swoboda PP, Dastidar A, Greenwood JP, Plein S, Garg P. Mitral regurgitation quantified by CMR 4D-flow is associated with microvascular obstruction post reperfused ST-segment elevation myocardial infarction. BMC Res Notes 2022; 15:181. [PMID: 35570318 PMCID: PMC9107700 DOI: 10.1186/s13104-022-06063-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 05/05/2022] [Indexed: 12/13/2022] Open
Abstract
Objectives Mitral regurgitation (MR) and microvascular obstruction (MVO) are common complications of myocardial infarction (MI). This study aimed to investigate the association between MR in ST-elevation MI (STEMI) subjects with MVO post-reperfusion. STEMI subjects undergoing primary percutaneous intervention were enrolled. Cardiovascular magnetic resonance (CMR) imaging was performed within 48-hours of initial presentation. 4D flow images of CMR were analysed using a retrospective valve tracking technique to quantify MR volume, and late gadolinium enhancement images of CMR to assess MVO. Results Among 69 patients in the study cohort, 41 had MVO (59%). Patients with MVO had lower left ventricular (LV) ejection fraction (EF) (42 ± 10% vs. 52 ± 8%, P < 0.01), higher end-systolic volume (98 ± 49 ml vs. 73 ± 28 ml, P < 0.001) and larger scar volume (26 ± 19% vs. 11 ± 9%, P < 0.001). Extent of MVO was associated with the degree of MR quantified by 4D flow (R = 0.54, P = 0.0003). In uni-variate regression analysis, investigating the association of CMR variables to the degree of acute MR, only the extent of MVO was associated (coefficient = 0.27, P = 0.001). The area under the curve for the presence of MVO was 0.66 (P = 0.01) for MR > 2.5 ml. We conclude that in patients with reperfused STEMI, the degree of acute MR is associated with the degree of MVO.
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Ribeyrolles S, Monin JL, Rohnean A, Diakov C, Caussin C, Monnot S, Berrebi A, Paul JF. Grading mitral regurgitation using 4D flow CMR: Comparison to transthoracic echocardiography. Echocardiography 2022; 39:783-793. [PMID: 35536700 DOI: 10.1111/echo.15364] [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: 11/15/2021] [Revised: 02/22/2022] [Accepted: 04/25/2022] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVES To determine the 4D Flow Cardiac Magnetic Resonance (CMR) thresholds that achieve the best agreement with transthoracic echocardiography (TTE) for grading mitral regurgitation (MR). METHODS We conducted a single-center prospective study of patients evaluated for chronic primary MR in 2016-2020. MR was evaluated blindly by TTE and 4D Flow CMR, respectively by two cardiologists and two radiologists with decades of experience. MR was graded with both methods as mild, moderate, or severe. 4D Flow CMR measurements included MR regurgitant volume per beat (RV) and mitral anterograde flow per beat (MF). RF was obtained as the ratio RV/MF. Additionally, MF was compared to left ventricular stroke volume (LVSV) by cine-CMR. RESULTS We included 33 patients in the initial cohort and 33 in the validation cohort. Inter-observer agreement was excellent for 4D Flow CMR ICC = .94 (95% CI, .86-.97, p < 0.0001). Using recommended TTE thresholds (30 ml, 60 ml, 30%, 50%), agreement was moderate for RV and RF. The best agreement between 4D Flow CMR and TTE was obtained with CMR thresholds of 20 and 40 ml for RV (κ = .93; 95% CI, .8-1) and 20% and 37% for RF (κ = .90; 95% CI, .7-.9). In the validation cohort, agreement between TTE and 4D Flow CMR was good with the optimal thresholds (κ = .78; 95% CI, .61-.94). CONCLUSION We propose CMR thresholds that provide a good agreement between TTE and CMR for grading MR. Further studies are needed to fully validate 4D-Flow CMR accuracy for primary MR quantification.
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Affiliation(s)
- Sophie Ribeyrolles
- Department of Cardiovascular Medicine, Institut Mutualiste Montsouris, Paris, France
| | - Jean-Luc Monin
- Department of Cardiovascular Medicine, Institut Mutualiste Montsouris, Paris, France
| | - Adela Rohnean
- Department of Cardiovascular Imaging, Institut Mutualiste Montsouris, Paris, France
| | - Christelle Diakov
- Department of Cardiovascular Medicine, Institut Mutualiste Montsouris, Paris, France
| | - Christophe Caussin
- Department of Cardiovascular Medicine, Institut Mutualiste Montsouris, Paris, France
| | - Sebastien Monnot
- Department of Cardiovascular Imaging, Institut Mutualiste Montsouris, Paris, France
| | - Alain Berrebi
- Department of Cardiovascular Medicine, Institut Mutualiste Montsouris, Paris, France
| | - Jean-François Paul
- Department of Cardiovascular Imaging, Institut Mutualiste Montsouris, Paris, France
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Vahanian A, Beyersdorf F, Praz F, Milojevic M, Baldus S, Bauersachs J, Capodanno D, Conradi L, De Bonis M, De Paulis R, Delgado V, Freemantle N, Gilard M, Haugaa KH, Jeppsson A, Jüni P, Pierard L, Prendergast BD, Rafael Sádaba J, Tribouilloy C, Wojakowski W. Guía ESC/EACTS 2021 sobre el diagnóstico y tratamiento de las valvulopatías. Rev Esp Cardiol 2022. [DOI: 10.1016/j.recesp.2021.11.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Vidula MK, Xu Z, Xu Y, Alturki A, Reddy BN, Kini P, Alberto-Delgado AL, Jacob R, Chen T, Ferrari VA, Sierra-Galan LM, Chen Y, Viswamitra S, Han Y. Cardiovascular magnetic resonance characterization of rheumatic mitral stenosis: findings from three worldwide endemic zones. J Cardiovasc Magn Reson 2022; 24:24. [PMID: 35387660 PMCID: PMC8988335 DOI: 10.1186/s12968-022-00853-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 03/15/2022] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Cardiac remodeling in rheumatic mitral stenosis (MS) is complex and incompletely understood. The objective of this study was to evaluate cardiac structural and functional changes in a cohort of patients with rheumatic MS using cardiovascular magnetic resonance (CMR). METHODS This retrospective study included 40 patients with rheumatic MS, consisting of 19 patients from India, 15 patients from China, and 6 patients from Mexico (median (interquartile range (IQR)) age: 45 years (34-55); 75% women). Twenty patients were included in the control group. CMR variables pertaining to morphology and function were collected. Late gadolinium enhancement (LGE) sequences were acquired for tissue characterization. Statistical analyses were performed using the Kruskal-Wallis test and the chi-square test. RESULTS Compared to the control group, patients with MS had lower left ventricular (LV) ejection fraction (51% (42%-55%) vs 60% (57%-65%), p < 0.001), lower right ventricular (RV) ejection fraction (44% (40%-52%) vs 64% (59%-67%), p < 0.001), higher RV end-diastolic volume (72 (58-87) mL/m2 vs 59 (49-69) mL/m2, p = 0.003), larger left atrial volume (87 (67-108) mL/m2 vs 29 (22-34) mL/m2, p < 0.001), and right atrial areas (20 (16-23) cm2 vs 13 (12-16) cm2, p < 0.001). LGE was prevalent in patients with rheumatic MS (82%), and was commonly located at the RV insertion sites. Furthermore, the patient cohorts from India, China, and Mexico were heterogeneous in terms of baseline characteristics and cardiac remodeling. CONCLUSION Our findings demonstrated that biventricular dysfunction, right and left atrial remodeling, and LGE at the RV insertion sites are underappreciated in contemporary rheumatic MS. Further studies are needed to elucidate the prognostic implications of these findings.
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Affiliation(s)
- Mahesh K Vidula
- Division of Cardiovascular Medicine, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Ziqian Xu
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yuanwei Xu
- Division of Cardiology, Department of Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Abdullah Alturki
- Division of Cardiothoracic Imaging, Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Bhavana N Reddy
- Department of Radiology, Sri Sathya Sai Institute of Higher Medical Sciences, Bangalore, Karnataka, India
| | - Prayaag Kini
- Department of Cardiology, Sri Sathya Sai Institute of Higher Medical Sciences, Bangalore, Karnataka, India
| | | | - Ron Jacob
- Division of Cardiovascular Medicine, Lancaster General Hospital, Lancaster, PA, USA
| | - Tiffany Chen
- Division of Cardiovascular Medicine, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Victor A Ferrari
- Division of Cardiovascular Medicine, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Lilia M Sierra-Galan
- Division of Cardiology, American British Cowdray Medical Center, Mexico City, Mexico
| | - Yucheng Chen
- Division of Cardiology, Department of Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Sanjaya Viswamitra
- Department of Radiology, Sri Sathya Sai Institute of Higher Medical Sciences, Bangalore, Karnataka, India
| | - Yuchi Han
- Division of Cardiovascular Medicine, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, USA.
- Division of Cardiothoracic Imaging, Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia, PA, USA.
- Division of Cardiology, Biomedical Research Tower, The Ohio State University, Room 216, 460 W. 12th Avenue, Columbus, OH, 43210, USA.
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Wang JX, Li X, Xu R, Hou RL, Yang ZG, Zhou ZQ, Wang YN, Guo YK. Comparison of cardiovascular magnetic resonance features and clinical consequences in patients with left ventricular non-compaction with and without mitral regurgitation-a multi-institutional study of the retrospective cohort study. Cardiovasc Diagn Ther 2022; 12:241-252. [PMID: 35433344 PMCID: PMC9011087 DOI: 10.21037/cdt-21-769] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 03/17/2022] [Indexed: 03/08/2024]
Abstract
BACKGROUND Mitral regurgitation (MR) is common in patients with ischemic or idiopathic cardiomyopathies and may be associated with a poor prognosis; however, the impact of different degrees of MR on cardiovascular magnetic resonance images, left ventricular features, and clinical outcomes of left ventricular noncompaction are unknown. We aimed to investigate and compare cardiovascular magnetic resonance characteristics and clinical consequences in patients with left ventricular non-compaction (LVNC) with and without MR. METHODS A cohort of 75 patients with left ventricular noncompaction were retrospectively studied from three institutions; all had undergone cardiovascular magnetic resonance examination with subsequent clinical follow-up. MR was evaluated by echocardiography. Left ventricular myocardial strains including global radial, circumferential, and longitudinal peak strains and left ventricular geometric and functional parameters, including left ventricular ejection fraction, end-diastolic volume, end-systolic volume, left ventricular mass, left ventricular sphericity index, longitudinal shorten, and late gadolinium enhancement (LGE) were measured and compared among groups. The primary endpoint was a composite of heart transplantation, implantable cardioverter-defibrillator insertion, and cardiac death. RESULTS Compared with the no MR group, the MR groups showed significant deterioration in left ventricular myocardial strains (all P<0.05), and impaired left ventricular geometry and function, including lower left ventricular ejection fraction and greater left ventricular end-systolic volume and left ventricular mass (P<0.05). In the subgroup of moderate-severe MR, patients showed more impaired cardiovascular magnetic resonance features, including left ventricular sphericity index, left ventricular end-diastolic volume, and longitudinal shorten (P<0.05). In this subgroup, Kaplan-Meier analysis showed a significant difference in clinical outcomes (log-rank χ2=4.516, P=0.034; log-rank χ2=4.419, P=0.036, respectively). Additionally, multivariate analyses showed a 6.5-fold higher [hazard ratio, 6.5 (95% CI, 1.015-41.881)] risk of cardiac death with LGE in the moderate-severe MR cohort. CONCLUSIONS In patients with left ventricular noncompaction, MR induced more maladaptive left ventricular remodeling. The incidence of adverse outcomes may be related to the degree of MR. In moderate-severe MR patients, coexisting of LGE may have an additive deleterious effect on clinical outcomes.
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Affiliation(s)
- Jing-Xin Wang
- Department of Ultrasound, Key Laboratory of Birth Defects and Related Diseases of Women and Children of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Xiao Li
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Rong Xu
- Department of Radiology, Key Laboratory of Birth Defects and Related Diseases of Women and Children of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Rui-Lai Hou
- Department of Radiology, Key Laboratory of Birth Defects and Related Diseases of Women and Children of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Zhi-Gang Yang
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, China
| | - Zi-Qi Zhou
- Department of Radiology, Key Laboratory of Birth Defects and Related Diseases of Women and Children of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Yi-Ning Wang
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Ying-Kun Guo
- Department of Radiology, Key Laboratory of Birth Defects and Related Diseases of Women and Children of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
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Malignant Mitral Valve Prolapse: Risk and Prevention of Sudden Cardiac Death. CURRENT TREATMENT OPTIONS IN CARDIOVASCULAR MEDICINE 2022; 24:61-86. [PMID: 35784809 PMCID: PMC9241643 DOI: 10.1007/s11936-022-00956-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Purpose of review The purpose of this review is to explore the prevalence and risk factors for a malignant phenotype in mitral valve prolapse (MVP) characterized by life-threatening ventricular arrhythmias and sudden cardiac arrest and death (SCD), including mechanistic and pathophysiologic findings and mechanism-based potential therapies. Recent findings A malignant phenotype in MVP characterized by life-threatening arrhythmias has long been recognized, although MVP is often benign. Efforts to identify this malignant phenotype have revealed potential risk factors for SCD that include elongated, myxomatous leaflets, ECG changes and complex ventricular ectopy. More recently, malignant MVP has been associated with myocardial fibrosis in the papillary muscles and inferobasal left ventricular wall. This localization suggests a central role of prolapse-induced mechanical forces on the myocardium in creating an arrhythmogenic substrate and triggering life-threatening arrhythmias. This mechanism for fibrosis is also consistent with imaging evidence of prolapse-induced mechanical changes in the papillary muscles and inferobasal left ventricular wall. Currently, no therapy to prevent SCD in malignant MVP has been established and limited clinical data are available. Mechanistic information and prospective study have the potential to identify patients at risk of SCD and preventive strategies. Summary Malignant MVP relates to unique properties and mechanical abnormalities in the mitral valve apparatus and adjacent myocardium. Increased understanding of disease mechanisms and determinants of arrhythmias is needed to establish effective therapies.
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Altes A, Levy F, Iacuzio L, Dumortier H, Toledano M, Tartar J, Tribouilloy C, Maréchaux S. Comparison of mitral regurgitant volume assessment between proximal flow convergence and volumetric methods in patients with significant primary mitral regurgitation: an echocardiographic and CMR study. J Am Soc Echocardiogr 2022; 35:671-681. [DOI: 10.1016/j.echo.2022.03.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 03/04/2022] [Accepted: 03/04/2022] [Indexed: 11/25/2022]
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Tsampasian V, Hothi SS, Ravindrarajah T, Swift AJ, Garg P, Vassiliou VS. Valvular Cardiomyopathy: The Value of Cardiovascular Magnetic Resonance Imaging. Cardiol Res Pract 2022; 2022:3144386. [PMID: 35242387 PMCID: PMC8888109 DOI: 10.1155/2022/3144386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 02/02/2022] [Indexed: 11/17/2022] Open
Abstract
Cardiovascular magnetic resonance (CMR) imaging has had a vast impact on the understanding of a wide range of disease processes and pathophysiological mechanisms. More recently, it has contributed significantly to the diagnosis and risk stratification of patients with valvular heart disease. With its increasing use, CMR allows for a detailed, reproducible, qualitative, and quantitative evaluation of left ventricular volumes and mass, thereby enabling assessment of the haemodynamic impact of a valvular lesion upon the myocardium. Postprocessing of the routinely acquired images with feature tracking CMR methodology can give invaluable information about myocardial deformation and strain parameters that suggest subclinical ventricular impairment that remains undetected by conventional measures such as the ejection fraction (EF). T1 mapping and late gadolinium enhancement (LGE) imaging provide deep myocardial tissue characterisation that is changing the approach towards risk stratification of patients as an increasing body of evidence suggests that the presence of fibrosis is related to adverse events and prognosis. This review summarises the current evidence regarding the utility of CMR in the left ventricular assessment of patients with aortic stenosis or mitral regurgitation and its value in diagnosis, risk stratification, and management.
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Affiliation(s)
- Vasiliki Tsampasian
- Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich, UK
- Norfolk and Norwich University Hospital, Norwich, UK
| | - Sandeep S. Hothi
- The Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | | | - Andrew J. Swift
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, UK
| | - Pankaj Garg
- Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich, UK
- Norfolk and Norwich University Hospital, Norwich, UK
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, UK
| | - Vassilios S. Vassiliou
- Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich, UK
- Norfolk and Norwich University Hospital, Norwich, UK
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Yu M, Tcheandjieu C, Georges A, Xiao K, Tejeda H, Dina C, Le Tourneau T, Fiterau M, Judy R, Tsao NL, Amgalan D, Munger CJ, Engreitz JM, Damrauer SM, Bouatia-Naji N, Priest JR. Computational estimates of annular diameter reveal genetic determinants of mitral valve function and disease. JCI Insight 2022; 7:146580. [PMID: 35132965 PMCID: PMC8855800 DOI: 10.1172/jci.insight.146580] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 12/21/2021] [Indexed: 11/17/2022] Open
Abstract
The fibrous annulus of the mitral valve plays an important role in valvular function and cardiac physiology, while normal variation in the size of cardiovascular anatomy may share a genetic link with common and rare disease. We derived automated estimates of mitral valve annular diameter in the 4-chamber view from 32,220 MRI images from the UK Biobank at ventricular systole and diastole as the basis for GWAS. Mitral annular dimensions corresponded to previously described anatomical norms, and GWAS inclusive of 4 population strata identified 10 loci, including possibly novel loci (GOSR2, ERBB4, MCTP2, MCPH1) and genes related to cardiac contractility (BAG3, TTN, RBFOX1). ATAC-Seq of primary mitral valve tissue localized multiple variants to regions of open chromatin in biologically relevant cell types and rs17608766 to an algorithmically predicted enhancer element in GOSR2. We observed strong genetic correlation with measures of contractility and mitral valve disease and clinical correlations with heart failure, cerebrovascular disease, and ventricular arrhythmias. Polygenic scoring of mitral valve annular diameter in systole was predictive of risk mitral valve prolapse across 4 cohorts. In summary, genetic and clinical studies of mitral valve annular diameter revealed genetic determinants of mitral valve biology, while highlighting clinical associations. Polygenic determinants of mitral valve annular diameter may represent an independent risk factor for mitral prolapse. Overall, computationally estimated phenotypes derived at scale from medical imaging represent an important substrate for genetic discovery and clinical risk prediction.
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Affiliation(s)
| | - Catherine Tcheandjieu
- Department of Pediatrics and.,Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, California, USA
| | - Adrien Georges
- Paris Cardiovascular Research Center, INSERM, University of Paris, Paris, France
| | - Ke Xiao
- College of Information & Computer Sciences at University of Massachusetts Amherst, Amherst, Massachusetts, USA
| | | | - Christian Dina
- University of Nantes, INSERM, CNRS, CHU Nantes, The Thorax Institute, Nantes, France
| | - Thierry Le Tourneau
- University of Nantes, INSERM, CNRS, CHU Nantes, The Thorax Institute, Nantes, France
| | - Madalina Fiterau
- College of Information & Computer Sciences at University of Massachusetts Amherst, Amherst, Massachusetts, USA
| | - Renae Judy
- Department of Surgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Noah L Tsao
- Department of Surgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Dulguun Amgalan
- Department of Genetics, Stanford University School of Medicine, Stanford, California, USA.,Basic Science & Engineering Initiative & Betty Irene Moore Children's Heart Center, Lucile Packard Children's Hospital, Stanford, California, USA
| | - Chad J Munger
- Department of Genetics, Stanford University School of Medicine, Stanford, California, USA.,Basic Science & Engineering Initiative & Betty Irene Moore Children's Heart Center, Lucile Packard Children's Hospital, Stanford, California, USA
| | - Jesse M Engreitz
- Department of Genetics, Stanford University School of Medicine, Stanford, California, USA.,Basic Science & Engineering Initiative & Betty Irene Moore Children's Heart Center, Lucile Packard Children's Hospital, Stanford, California, USA
| | - Scott M Damrauer
- Department of Surgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Nabila Bouatia-Naji
- Paris Cardiovascular Research Center, INSERM, University of Paris, Paris, France
| | - James R Priest
- Department of Pediatrics and.,Chan-Zuckerberg Biohub, San Francisco, California, USA
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63
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Wen XL, Gao Y, Guo YK, Zhang Y, Yang MX, Li Y, Yang ZG. Effect of Mitral Regurgitation on Left Ventricular Deformation in Myocardial Infarction Patients: Evaluation by Cardiac Magnetic Resonance Imaging. J Magn Reson Imaging 2022; 56:790-800. [PMID: 35130580 DOI: 10.1002/jmri.28101] [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: 11/21/2021] [Revised: 01/25/2022] [Accepted: 01/25/2022] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Mitral regurgitation (MR) is a comorbidity of myocardial infarction (MI), which may promote the incidence of adverse cardiovascular clinical events. However, it is not yet completely understood how MR in MI patients is associated with impaired myocardial deformation. PURPOSE To determine the damaging myocardium effects of MR in MI patients in terms of the global peak strain (PS) and left ventricular (LV) function, and evaluate the independent risk factors impacting LV deformation after MI. STUDY TYPE Retrospective. POPULATION One hundred eighty-six MI patients (17.7% female) and 84 normal control subjects (27.4% female). FIELD STRENGTH/SEQUENCE 3.0T; late gadolinium enhancement sequence, balanced steady-state free precession. ASSESSMENT LV function and LV global PS (global radial peak strain [GRPS]; global circumferential peak strain [GCPS]; and global longitudinal peak strain [GLPS]) were compared among normal controls, MI without MR (MR-) and MI with MR (MR+, mild, moderate, severe) patients. STATISTICAL TESTS One-way analysis of variance (ANOVA) test, Mann-Whitney U test, Kruskal-Wallis test, and multiple linear regressions were used. A P value <0.05 indicated statistically significant difference (two-tailed). RESULTS The MI (MR+) patients showed significantly lower LV global PS than both MI (MR-) and control groups in three directions (GRPS 16.66 ± 7.43%; GCPS -11.27 ± 4.27%; GLPS -7.75 ± 3.44%), and significantly higher LV end-systolic (128.85 [87.91, 188.01] mL) and end-diastolic volumes (210.29 [164.07, 264.00] mL) and significantly lower LV ejection fraction (38.23 ± 13.02%). Multiple regression analysis demonstrated that MR was independently associated with LV GCPS (β = -0.268) and GLPS (β = -0.320). LV infarct size was an independent indicator of LV GRPS (β = -0.215) and GCPS (β = -0.222). LV end-diastolic volume was an independent indicator of LV GRPS (β = -0.518), GCPS (β = -0.503), and GLPS (β = -0.331). DATA CONCLUSION MR may further exacerbate the reduction of LV global peak strains and function. The MR, infarct size, and LV end-diastolic volume can be used as independent association indicators for LV global PS in MI (MR+) patients. LEVEL OF EVIDENCE 4 Technical Efficacy Stage: 2 TOC Category: Chest.
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Affiliation(s)
- Xiao-Ling Wen
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China.,Department of Radiology, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yue Gao
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Ying-Kun Guo
- Department of Radiology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yi Zhang
- Department of Radiology, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Meng-Xi Yang
- Department of Radiology, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Yuan Li
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Zhi-Gang Yang
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
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64
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Vahanian A, Beyersdorf F, Praz F, Milojevic M, Baldus S, Bauersachs J, Capodanno D, Conradi L, De Bonis M, De Paulis R, Delgado V, Freemantle N, Haugaa KH, Jeppsson A, Jüni P, Pierard L, Prendergast BD, Sádaba JR, Tribouilloy C, Wojakowski W. 2021 ESC/EACTS Guidelines for the management of valvular heart disease. EUROINTERVENTION 2022; 17:e1126-e1196. [PMID: 34931612 PMCID: PMC9725093 DOI: 10.4244/eij-e-21-00009] [Citation(s) in RCA: 146] [Impact Index Per Article: 73.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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65
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Grafton-Clarke C, Thornton G, Fidock B, Archer G, Hose R, van der Geest RJ, Zhong L, Swift AJ, Wild JM, De Gárate E, Bucciarelli-Ducci C, Plein S, Treibel TA, Flather M, Vassiliou VS, Garg P. Mitral regurgitation quantification by cardiac magnetic resonance imaging (MRI) remains reproducible between software solutions. Wellcome Open Res 2022. [DOI: 10.12688/wellcomeopenres.17200.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Background: The reproducibility of mitral regurgitation (MR) quantification by cardiovascular magnetic resonance (CMR) imaging using different software solutions remains unclear. This research aimed to investigate the reproducibility of MR quantification between two software solutions: MASS (version 2019 EXP, LUMC, Netherlands) and CAAS (version 5.2, Pie Medical Imaging). Methods: CMR data of 35 patients with MR (12 primary MR, 13 mitral valve repair/replacement, and ten secondary MR) was used. Four methods of MR volume quantification were studied, including two 4D-flow CMR methods (MRMVAV and MRJet) and two non-4D-flow techniques (MRStandard and MRLVRV). We conducted within-software and inter-software correlation and agreement analyses. Results: All methods demonstrated significant correlation between the two software solutions: MRStandard (r=0.92, p<0.001), MRLVRV (r=0.95, p<0.001), MRJet (r=0.86, p<0.001), and MRMVAV (r=0.91, p<0.001). Between CAAS and MASS, MRJet and MRMVAV, compared to each of the four methods, were the only methods not to be associated with significant bias. Conclusions: We conclude that 4D-flow CMR methods demonstrate equivalent reproducibility to non-4D-flow methods but greater levels of agreement between software solutions.
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66
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Liu Y, Dai Y, Li H, Duosiken D, Tang N, Sun K, Tao K. Revisiting the factors influencing the magnetic resonance contrast of Gd 2O 3 nanoparticles. NANOSCALE ADVANCES 2021; 4:95-101. [PMID: 36132966 PMCID: PMC9418219 DOI: 10.1039/d1na00612f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 10/22/2021] [Indexed: 06/16/2023]
Abstract
Gadolinium oxide nanoparticles (GONs) have the potential to be one of the best candidates for the contrast agents of magnetic resonance imaging. Even though the influence of parameters on the relaxation has been substantially demonstrated, the variation of the r 1 of GONs with a similar structure and surface chemistry implied our limited understanding. We herein synthesized GONs with adjustable size, shape, and crystallinity, modified them with a series of molecules with different acidities, and recorded their r 1 values and imaging contrast. Our results showed that the isoelectric point could be regarded as an indicator of the relaxation covering the influence of both surface modification and size, which highlighted the impact of protons dissociated from the contrast agents. We further showed that the nanoparticles with lower crystallinity possess higher relaxivity, and this phenomenon manifested significantly under a low field. Our work clarified that the longitudinal relaxivity of Gd2O3 nanoparticles is sensitively dependent on the numbers of H+ generated from the surface and in the environment, which may shed light on developing high-performance nanoparticulate T 1 contrast agents.
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Affiliation(s)
- Yanyue Liu
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Yingfan Dai
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Haifeng Li
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Dida Duosiken
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Na Tang
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Kang Sun
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Ke Tao
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University Shanghai 200240 P. R. China
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67
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Musella F, Azzu A, Antonopoulos AS, La Mura L, Mohiaddin RH. Comprehensive mitral valve prolapse assessment by cardiovascular MRI. Clin Radiol 2021; 77:e120-e129. [PMID: 34895911 DOI: 10.1016/j.crad.2021.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Accepted: 11/05/2021] [Indexed: 12/07/2022]
Abstract
Mitral valve (MV) prolapse (MVP) is a not fully understood common MV disorder. The development of sophisticated cardiovascular magnetic resonance imaging (CMRI) sequences over the last decades has allowed a more detailed assessment and provided better understanding of the pathophysiology of MVP to guide management, interventions, and risk stratification of patients affected. This review provides an overview of the most recent insights about this multifaceted pathology, particularly regarding the emerging concepts of mitral annular disjunction (MAD), and risk of arrhythmia and sudden death associated with myocardial fibrosis. We describe the emerging role of CMRI in both diagnosis and, more importantly, risk assessment of this disease, aiming to provide a comprehensive protocol for the assessment of MVP, which could represent a practical guide to clinicians and MRI practitioners working in the field.
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Affiliation(s)
- F Musella
- Department of Advanced Biomedical Sciences, University Federico II of Naples. Naples, Italy.
| | - A Azzu
- Royal Brompton and Harefield Hospitals, Guy's and St Thomas' NHS Foundation Trust, UK; National Heart and Lung Institute, Imperial College London, UK
| | - A S Antonopoulos
- 1st Cardiology Department, Athens School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - L La Mura
- Department of Advanced Biomedical Sciences, University Federico II of Naples. Naples, Italy
| | - R H Mohiaddin
- Royal Brompton and Harefield Hospitals, Guy's and St Thomas' NHS Foundation Trust, UK; National Heart and Lung Institute, Imperial College London, UK.
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68
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Gupta AN, Avery R, Soulat G, Allen BD, Collins JD, Choudhury L, Bonow RO, Carr J, Markl M, Elbaz MSM. Direct mitral regurgitation quantification in hypertrophic cardiomyopathy using 4D flow CMR jet tracking: evaluation in comparison to conventional CMR. J Cardiovasc Magn Reson 2021; 23:138. [PMID: 34865629 PMCID: PMC8647422 DOI: 10.1186/s12968-021-00828-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 11/16/2021] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND Quantitative evaluation of mitral regurgitation (MR) in hypertrophic cardiomyopathy (HCM) by cardiovascular magnetic resonance (CMR) relies on an indirect volumetric calculation. The aim of this study was to directly assess and quantify MR jets in patients with HCM using 4D flow CMR jet tracking in comparison to standard-of-care CMR indirect volumetric method. METHODS This retrospective study included patients with HCM undergoing 4D flow CMR. By the indirect volumetric method from CMR, MR volume was quantified as left ventricular stroke volume minus forward aortic volume. By 4D flow CMR direct jet tracking, multiplanar reformatted planes were positioned in the peak velocity of the MR jet during systole to calculate through-plane regurgitant flow. MR severity was collected for agreement analysis from a clinical echocardiograms performed within 1 month of CMR. Inter-method and inter-observer agreement were assessed by intraclass correlation coefficient (ICC), Bland-Altman analysis, and Cohen's kappa. RESULTS Thirty-seven patients with HCM were included. Direct jet tracking demonstrated good inter-method agreement of MR volume compared to the indirect volumetric method (ICC = 0.80, p = 0.004) and fair agreement of MR severity (kappa = 0.27, p = 0.03). Direct jet tracking showed higher agreement with echocardiography (kappa = 0.35, p = 0.04) than indirect volumetric method (kappa = 0.16, p = 0.35). Inter-observer reproducibility of indirect volumetric method components revealed the lowest reproducibility in end-systolic volume (ICC = 0.69, p = 0.15). Indirect volumetric method showed good agreement of MR volume (ICC = 0.80, p = 0.003) and fair agreement of MR severity (kappa = 0.38, p < 0.001). Direct jet tracking demonstrated (1) excellent inter-observer reproducibility of MR volume (ICC = 0.97, p < 0.001) and MR severity (kappa = 0.84, p < 0.001) and (2) excellent intra-observer reproducibility of MR volume (ICC = 0.98, p < 0.001) and MR severity (kappa = 0.88, p < 0.001). CONCLUSIONS Quantifying MR and assessing MR severity by indirect volumetric method in HCM patients has limited inter-observer reproducibility. 4D flow CMR jet tracking is a potential alternative technique to directly quantify and assess MR severity with excellent inter- and intra-observer reproducibility and higher agreement with echocardiography in this population.
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Affiliation(s)
- Aakash N Gupta
- Department of Radiology, Northwestern University, Feinberg School of Medicine, 737 N Michigan, Suite 1600, Chicago, IL, 60611, USA
| | - Ryan Avery
- Department of Radiology, Northwestern University, Feinberg School of Medicine, 737 N Michigan, Suite 1600, Chicago, IL, 60611, USA
| | - Gilles Soulat
- Department of Radiology, Northwestern University, Feinberg School of Medicine, 737 N Michigan, Suite 1600, Chicago, IL, 60611, USA
| | - Bradley D Allen
- Department of Radiology, Northwestern University, Feinberg School of Medicine, 737 N Michigan, Suite 1600, Chicago, IL, 60611, USA
| | | | - Lubna Choudhury
- Department of Medicine, Division of Cardiology, Northwestern University, Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Robert O Bonow
- Department of Medicine, Division of Cardiology, Northwestern University, Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - James Carr
- Department of Radiology, Northwestern University, Feinberg School of Medicine, 737 N Michigan, Suite 1600, Chicago, IL, 60611, USA
| | - Michael Markl
- Department of Radiology, Northwestern University, Feinberg School of Medicine, 737 N Michigan, Suite 1600, Chicago, IL, 60611, USA
- Department of Biomedical Engineering, Northwestern University, McCormick School of Engineering, Evanston, IL, 60208, USA
| | - Mohammed S M Elbaz
- Department of Radiology, Northwestern University, Feinberg School of Medicine, 737 N Michigan, Suite 1600, Chicago, IL, 60611, USA.
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69
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Lee J, Gupta AN, Ma LE, Scott MB, Mason OR, Wu E, Thomas JD, Markl M. Valvular regurgitation flow jet assessment using in vitro 4D flow MRI: Implication for mitral regurgitation. Magn Reson Med 2021; 87:1923-1937. [PMID: 34783383 DOI: 10.1002/mrm.29082] [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: 06/25/2021] [Revised: 10/01/2021] [Accepted: 10/25/2021] [Indexed: 11/11/2022]
Abstract
PURPOSE The purpose of this study was to evaluate the accuracy of four-dimensional (4D) flow MRI for direct assessment of peak velocity, flow volume, and momentum of a mitral regurgitation (MR) flow jets using an in vitro pulsatile jet flow phantom. We systematically investigated the impact of spatial resolution and quantification location along the jet on flow quantities with Doppler ultrasound as a reference for peak velocity. METHODS Four-dimensional flow MRI data of a pulsatile jet through a circular, elliptical, and 3D-printed patient-specific MR orifice model was acquired with varying spatial resolution (1.5-5 mm isotropic voxel). Flow rate and momentum of the jet were quantified at various axial distances (x = 0-50 mm) and integrated over time to calculate Voljet and MTIjet . In vivo assessment of Voljet and MTIjet was performed on 3 MR patients. RESULTS Peak velocities were comparable to Doppler ultrasound (3% error, 1.5 mm voxel), but underestimated with decreasing spatial resolution (-40% error, 5 mm voxel). Voljet was similar to regurgitant volume (RVol) within 5 mm, and then increased linearly with the axial distance (19%/cm) because of flow entrainment. MTIjet remained steady throughout the jet (2%/cm) as theoretically predicted. Four and 9 voxels across the jet were required to measure flow volume and momentum-time-integral within 10% error, respectively. CONCLUSION Four-dimensional flow MRI detected accurate peak velocity, flow rate, and momentum for in vitro MR-mimicking flow jets. Spatial resolution significantly impacted flow quantitation, which otherwise followed predictions of flow entrainment and momentum conservation. This study provides important preliminary information for accurate in vivo MR assessment using 4D flow MRI.
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Affiliation(s)
- Jeesoo Lee
- Department of Radiology, Northwestern University, Feinberg School of Medicine, Chicago, Illinois, USA
| | - Aakash N Gupta
- Department of Radiology, Northwestern University, Feinberg School of Medicine, Chicago, Illinois, USA
| | - Liliana E Ma
- Department of Radiology, Northwestern University, Feinberg School of Medicine, Chicago, Illinois, USA
| | - Michel B Scott
- Department of Radiology, Northwestern University, Feinberg School of Medicine, Chicago, Illinois, USA
| | - O'Neil R Mason
- Division of Cardiology, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Erik Wu
- Division of Cardiology, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - James D Thomas
- Division of Cardiology, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Michael Markl
- Department of Radiology, Northwestern University, Feinberg School of Medicine, Chicago, Illinois, USA.,Department of Biomedical Engineering, Northwestern University, McCormick School of Engineering, Evanston, Illinois, USA
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Guzzetti E, Racine HP, Tastet L, Shen M, Larose E, Clavel MA, Pibarot P, Beaudoin J. Accuracy of stroke volume measurement with phase-contrast cardiovascular magnetic resonance in patients with aortic stenosis. J Cardiovasc Magn Reson 2021; 23:124. [PMID: 34732204 PMCID: PMC8567621 DOI: 10.1186/s12968-021-00814-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 09/13/2021] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Phase contrast (PC) cardiovascular magnetic resonance (CMR) in the ascending aorta (AAo) is widely used to calculate left ventricular (LV) stroke volume (SV). The accuracy of PC CMR may be altered by turbulent flow. Measurement of SV at another site is suggested in the presence of aortic stenosis, but very few data validates the accuracy or inaccuracy of PC in that setting. Our objective is to compare flow measurements obtained in the AAo and LV outflow tract (LVOT) in patients with aortic stenosis. METHODS Retrospective analysis of patients with aortic stenosis who had CMR and echocardiography. Patients with mitral regurgitation were excluded. PC in the AAo and LVOT were acquired to derive SV. LV SV from end-systolic and end-diastolic tracings was used as the reference measure. A difference ≥ 10% between the volumetric method and PC derived SVs was considered discordant. Metrics of turbulence and jet eccentricity were assessed to explore the predictors of discordant measurements. RESULTS We included 88 patients, 41% with bicuspid aortic valve. LVOT SV was concordant with the volumetric method in 79 (90%) patients vs 52 (59%) patients for AAo SV (p = 0.015). In multivariate analysis, aortic stenosis flow jet angle was a strong predictor of discordant measurement in the AAo (p = 0.003). Mathematical correction for the jet angle improved the concordance from 59 to 91%. Concordance was comparable in patients with bicuspid and trileaflet valves (57% and 62% concordance respectively; p = 0.11). Accuracy of SV measured in the LVOT was not influenced by jet eccentricity. For aortic regurgitation quantification, PC in the AAo had better correlation to volumetric assessments than LVOT PC. CONCLUSION LVOT PC SV in patients with aortic stenosis and eccentric jet might be more accurate compared to the AAo SV. Mathematical correction for the jet angle in the AAo might be another alternative to improve accuracy.
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Affiliation(s)
- Ezequiel Guzzetti
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, 2725 Chemin Sainte-Foy, Québec, QC, G1V-4G5, Canada
| | - Hugo-Pierre Racine
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, 2725 Chemin Sainte-Foy, Québec, QC, G1V-4G5, Canada
| | - Lionel Tastet
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, 2725 Chemin Sainte-Foy, Québec, QC, G1V-4G5, Canada
| | - Mylène Shen
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, 2725 Chemin Sainte-Foy, Québec, QC, G1V-4G5, Canada
| | - Eric Larose
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, 2725 Chemin Sainte-Foy, Québec, QC, G1V-4G5, Canada
| | - Marie-Annick Clavel
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, 2725 Chemin Sainte-Foy, Québec, QC, G1V-4G5, Canada
| | - Philippe Pibarot
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, 2725 Chemin Sainte-Foy, Québec, QC, G1V-4G5, Canada
| | - Jonathan Beaudoin
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, 2725 Chemin Sainte-Foy, Québec, QC, G1V-4G5, Canada.
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Tumenas A, Tamkeviciute L, Arzanauskiene R, Arzanauskaite M. Multimodality Imaging of the Mitral Valve: Morphology, Function, and Disease. Curr Probl Diagn Radiol 2021; 50:905-924. [DOI: 10.1067/j.cpradiol.2020.09.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 08/28/2020] [Accepted: 09/15/2020] [Indexed: 12/16/2022]
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Vahanian A, Beyersdorf F, Praz F, Milojevic M, Baldus S, Bauersachs J, Capodanno D, Conradi L, De Bonis M, De Paulis R, Delgado V, Freemantle N, Gilard M, Haugaa KH, Jeppsson A, Jüni P, Pierard L, Prendergast BD, Sádaba JR, Tribouilloy C, Wojakowski W. 2021 ESC/EACTS Guidelines for the management of valvular heart disease. Eur J Cardiothorac Surg 2021; 60:727-800. [PMID: 34453161 DOI: 10.1093/ejcts/ezab389] [Citation(s) in RCA: 316] [Impact Index Per Article: 105.3] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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Influence of Prolapse Volume in Mitral Valve Prolapse. Am J Cardiol 2021; 157:64-70. [PMID: 34389154 DOI: 10.1016/j.amjcard.2021.07.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 06/27/2021] [Accepted: 07/01/2021] [Indexed: 11/21/2022]
Abstract
Mitral valve prolapse (MVP) is characterized by excessive leaflet tissue leading to a wide spectrum of mitral regurgitation (MR) ranging from trivial to severe. The prolapse volume (PV) below the prolapsing leaflets in end-systole was suspected to impact both chamber remodeling and MR grading in MVP. Based on 157 consecutive patients (45 women; mean age 62±15) referred for CMR assessment of MR, either from MVP (n = 91; 58%) or fibroelastic disease (FED) (n = 66; 42%), we sought to study (i) the interaction between PV and cardiac chamber geometry (ii) to study the impact of PV on MR quantification in MVP. Despite similar left ventricular (LV) size, PV was larger in MVP (11±9ml) than in FED (2±2ml). PV progressively increased with the severity of MR in MVP but not in FED. Despite a low regurgitant volume (32±18ml), some MVP patients with less than moderate MR exhibit significant cardiac chambers remodeling compared to 52 age and sex-matched controls. PV correlated significantly (r = 0.52) with the LV dilatation in severe MR but also in less than moderate MR. In MVP, PV>14ml was associated with a significant underestimation (Bias=-26±32ml) of regurgitant volume by PISA compared to CMR. In conclusion, in MVP, PV may play a role in left cardiac chambers remodeling, even in patients without severe MR, and in discordant grading of MR between echocardiography and CMR.
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74
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Grafton-Clarke C, Thornton G, Fidock B, Archer G, Hose R, van der Geest RJ, Zhong L, Swift AJ, Wild JM, De Gárate E, Bucciarelli-Ducci C, Plein S, Treibel TA, Flather M, Vassiliou VS, Garg P. Mitral regurgitation quantification by cardiac magnetic resonance imaging (MRI) remains reproducible between software solutions. Wellcome Open Res 2021. [DOI: 10.12688/wellcomeopenres.17200.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Background: The reproducibility of mitral regurgitation (MR) quantification by cardiovascular magnetic resonance (CMR) imaging using different software solutions remains unclear. This research aimed to investigate the reproducibility of MR quantification between two software solutions: MASS (version 2019 EXP, LUMC, Netherlands) and CAAS (version 5.2, Pie Medical Imaging). Methods: CMR data of 35 patients with MR (12 primary MR, 13 mitral valve repair/replacement, and ten secondary MR) was used. Four methods of MR volume quantification were studied, including two 4D-flow CMR methods (MRMVAV and MRJet) and two non-4D-flow techniques (MRStandard and MRLVRV). We conducted within-software and inter-software correlation and agreement analyses. Results: All methods demonstrated significant correlation between the two software solutions: MRStandard (r=0.92, p<0.001), MRLVRV (r=0.95, p<0.001), MRJet (r=0.86, p<0.001), and MRMVAV (r=0.91, p<0.001). Between CAAS and MASS, MRJet and MRMVAV, compared to each of the four methods, were the only methods not to be associated with significant bias. Conclusions: We conclude that 4D-flow CMR methods demonstrate equivalent reproducibility to non-4D-flow methods but greater levels of agreement between software solutions.
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75
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Review of multi-modality imaging update and diagnostic work up of Takotsubo cardiomyopathy. Clin Imaging 2021; 80:334-347. [PMID: 34500146 DOI: 10.1016/j.clinimag.2021.08.027] [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: 05/09/2021] [Revised: 07/30/2021] [Accepted: 08/30/2021] [Indexed: 11/20/2022]
Abstract
Takotsubo cardiomyopathy (TC) is an acute but reversible non-ischemic heart failure syndrome. It is characterized by a transient form of ventricular dysfunction typically manifesting as basal hyperkinesis with hypokinesia and ballooning of left ventricle mid-cavity and apex. Imaging helps in both diagnosis and follow up. Echocardiogram is the first-line modality to assess the typical contractile dysfunction in suspected patients with catheter angiography showing normal coronary arteries. Cardiac MRI is currently the modality of choice for the non-invasive initial assessment of TC and for follow up imaging. The current review focusses on historical background of TC, its pathophysiology, diagnostic work up and differential diagnosis and provides multimodality imaging work up of TC including role of echocardiogram, invasive catheterization, nuclear imaging, cardiac computed tomography and cardiac MRI including basic and advanced MRI sequences.
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76
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Xu B, Kocyigit D, Wang TKM, Tan CD, Rodriguez ER, Pettersson GB, Unai S, Griffin BP. Mitral annular calcification and valvular dysfunction: multimodality imaging evaluation, grading, and management. Eur Heart J Cardiovasc Imaging 2021; 23:e111-e122. [PMID: 34591959 DOI: 10.1093/ehjci/jeab185] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 09/02/2021] [Indexed: 11/12/2022] Open
Abstract
Mitral annular calcification (MAC) refers to calcium deposition in the fibrous skeleton of the mitral valve. It has many cardiovascular associations, including mitral valve dysfunction, elevated cardiovascular risk, arrhythmias, and endocarditis. Echocardiography conventionally is the first-line imaging modality for anatomic assessment, and evaluation of mitral valve function. Cardiac computed tomography (CT) has demonstrated importance as an imaging modality for the evaluation and planning of related procedures. It also holds promise in quantitative grading of MAC. Currently, there is no universally accepted definition or classification system of MAC severity. We review the multimodality imaging evaluation of MAC and associated valvular dysfunction and propose a novel classification system based on qualitative and quantitative measurements derived from echocardiography and cardiac CT.
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Affiliation(s)
- Bo Xu
- Section of Cardiovascular Imaging, Robert and Suzanne Tomsich Department of Cardiovascular Medicine, Sydell and Arnold Miller Family Heart, Vascular and Thoracic Institute, Cleveland Clinic, 9500 Euclid Avenue, Desk J1-5, Cleveland, OH 44195, USA
| | - Duygu Kocyigit
- Section of Cardiovascular Imaging, Robert and Suzanne Tomsich Department of Cardiovascular Medicine, Sydell and Arnold Miller Family Heart, Vascular and Thoracic Institute, Cleveland Clinic, 9500 Euclid Avenue, Desk J1-5, Cleveland, OH 44195, USA
| | - Tom Kai Ming Wang
- Section of Cardiovascular Imaging, Robert and Suzanne Tomsich Department of Cardiovascular Medicine, Sydell and Arnold Miller Family Heart, Vascular and Thoracic Institute, Cleveland Clinic, 9500 Euclid Avenue, Desk J1-5, Cleveland, OH 44195, USA
| | - Carmela D Tan
- Department of Cardiovascular Anatomical Pathology, Cleveland Clinic, Cleveland, OH 44195, USA
| | - E Rene Rodriguez
- Department of Cardiovascular Anatomical Pathology, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Gösta B Pettersson
- Department of Thoracic and Cardiovascular Surgery, Robert and Suzanne Tomsich Department of Cardiovascular Medicine, Sydell and Arnold Miller Family Heart, Vascular and Thoracic Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Shinya Unai
- Department of Thoracic and Cardiovascular Surgery, Robert and Suzanne Tomsich Department of Cardiovascular Medicine, Sydell and Arnold Miller Family Heart, Vascular and Thoracic Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Brian P Griffin
- Section of Cardiovascular Imaging, Robert and Suzanne Tomsich Department of Cardiovascular Medicine, Sydell and Arnold Miller Family Heart, Vascular and Thoracic Institute, Cleveland Clinic, 9500 Euclid Avenue, Desk J1-5, Cleveland, OH 44195, USA
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77
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Zhuang B, Sirajuddin A, Zhao S, Lu M. The role of 4D flow MRI for clinical applications in cardiovascular disease: current status and future perspectives. Quant Imaging Med Surg 2021; 11:4193-4210. [PMID: 34476199 DOI: 10.21037/qims-20-1234] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 04/23/2021] [Indexed: 11/06/2022]
Abstract
Magnetic resonance imaging (MRI) four-dimensional (4D) flow is a type of phase-contrast (PC) MRI that uses blood flow encoded in 3 directions, which is resolved relative to 3 spatial and temporal dimensions of cardiac circulation. It can be used to simultaneously quantify and visualize hemodynamics or morphology disorders. 4D flow MRI is more comprehensive and accurate than two-dimensional (2D) PC MRI and echocardiography. 4D flow MRI provides numerous hemodynamic parameters that are not limited to the basic 2D parameters, including wall shear stress (WSS), pulse wave velocity (PWV), kinetic energy, turbulent kinetic energy (TKE), pressure gradient, and flow component analysis. 4D flow MRI is widely used to image many parts of the body, such as the neck, brain, and liver, and has a wide application spectrum to cardiac diseases and large vessels. This present review aims to summarize the hemodynamic parameters of 4D flow MRI technology and generalize their usefulness in clinical practice in relation to the cardiovascular system. In addition, we note the improvements that have been made to 4D flow MRI with the application of new technologies. The application of new technologies can improve the speed of 4D flow, which would benefit clinical applications.
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Affiliation(s)
- Baiyan Zhuang
- Department of Magnetic Resonance Imaging, Fuwai Hospital, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Arlene Sirajuddin
- National Heart, Lung and Blood Institute (NHLBI), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Shihua Zhao
- Department of Magnetic Resonance Imaging, Fuwai Hospital, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Minjie Lu
- Department of Magnetic Resonance Imaging, Fuwai Hospital, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Cardiovascular Imaging (Cultivation), Chinese Academy of Medical Sciences, Beijing, China
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78
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Vahanian A, Beyersdorf F, Praz F, Milojevic M, Baldus S, Bauersachs J, Capodanno D, Conradi L, De Bonis M, De Paulis R, Delgado V, Freemantle N, Gilard M, Haugaa KH, Jeppsson A, Jüni P, Pierard L, Prendergast BD, Sádaba JR, Tribouilloy C, Wojakowski W. 2021 ESC/EACTS Guidelines for the management of valvular heart disease. Eur Heart J 2021; 43:561-632. [PMID: 34453165 DOI: 10.1093/eurheartj/ehab395] [Citation(s) in RCA: 2318] [Impact Index Per Article: 772.7] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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79
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Xu K, Wang XD, Yang ZG, Xu HY, Xu R, Xie LJ, Wen LY, Fu H, Yan WF, Guo YK. Quantification of peak blood flow velocity at the cardiac valve and great thoracic vessels by four-dimensional flow and two-dimensional phase-contrast MRI compared with echocardiography: a systematic review and meta-analysis. Clin Radiol 2021; 76:863.e1-863.e10. [PMID: 34404516 DOI: 10.1016/j.crad.2021.07.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 07/15/2021] [Indexed: 02/08/2023]
Abstract
AIM To objectively examine the agreement and correlation between four-dimensional (4D) flow magnetic resonance imaging (MRI) and traditional two-dimensional (2D) phase-contrast (PC) MRI with the reference standard of Doppler echocardiography for measuring peak blood velocity at the cardiac valve and great arteries, and to assess if 4D flow MRI offers an advantage over the traditional 2D method. MATERIALS AND METHODS The literature was searched systematically for studies that evaluate the degree of correlation and agreement between 4D flow MRI or 2D PC MRI and Doppler retrieved from PubMed, EMBASE, and the Cochrane Library. A meta-analysis was conducted to determine the peak velocity pooled bias with 95% limits of agreement (LoA) and correlation coefficient (r) for 4D flow MRI and 2D PC MRI compared with Doppler. RESULTS Ten studies that compared 4D flow MRI with Doppler and 12 studies that compared 2D PC MRI with Doppler were included. 4D flow MRI showed an underestimation with bias and 95% LoA of -0.09 (-0.41, 0.24) m/s (p=0.079) while 2D PC MRI showed a poorer agreement with a bias and 95% LoA of -0.25 (-0.53, 0.03), p=0.596. 4D flow MRI and 2D PC MRI showed a strong correlation with R=0.80 (95% CI 0.75, 0.84; p<0.001) and R=0.83 (95% CI 0.79, 0.87; p<0.001), respectively. CONCLUSION In this meta-analysis, 4D flow MRI provides improved assessment of peak velocity when compared with traditional 2D PC MRI. 4D flow MRI can be considered an important complement or substitute to Doppler echocardiography for peak velocity assessment.
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Affiliation(s)
- K Xu
- Department of Radiology, Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - X D Wang
- Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Z G Yang
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, China
| | - H Y Xu
- Department of Radiology, Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - R Xu
- Department of Radiology, Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - L J Xie
- Department of Radiology, Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - L Y Wen
- Department of Radiology, Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - H Fu
- Department of Radiology, Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - W F Yan
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, China
| | - Y K Guo
- Department of Radiology, Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China.
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80
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Ooms JF, Bouwmeester S, Debonnaire P, Nasser R, Voigt JU, Schotborgh MA, Geleijnse ML, Kardys I, Spitzer E, Daemen J, De Jaegere PP, Houthuizen P, Swaans MJ, Dubois C, Claeys M, Van Der Heyden J, Tonino PA, Van Mieghem NM. Transcatheter Edge-to-Edge Repair in Proportionate Versus Disproportionate Functional Mitral Regurgitation. J Am Soc Echocardiogr 2021; 35:105-115.e8. [PMID: 34389469 DOI: 10.1016/j.echo.2021.08.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 07/30/2021] [Accepted: 08/02/2021] [Indexed: 12/28/2022]
Abstract
BACKGROUND Functional mitral regurgitation (FMR) can be subclassified on the basis of its proportionality relative to left ventricular (LV) volume and function, indicating potential differences in underlying etiology. The aim of this study was to evaluate the association of FMR proportionality with FMR reduction, heart failure hospitalization and mortality after transcatheter edge-to-edge mitral valve repair (TEER). METHODS This multicenter registry included 241 patients with symptomatic heart failure with reduced LV ejection fraction treated with TEER for moderate to severe or greater FMR. FMR proportionality was graded on preprocedural transthoracic echocardiography using the ratio of the effective regurgitant orifice area to LV end-diastolic volume. Baseline characteristics, follow-up transthoracic echocardiography, and 2-year clinical outcomes were compared between groups. RESULTS Median LV ejection fraction, effective regurgitant orifice area and LV end-diastolic volume index were 30% (interquartile range [IQR], 25%-35%), 27 mm2, and 107 mL/m2 (IQR, 90-135 mL/m2), respectively. Median effective regurgitant orifice area/LV end-diastolic volume ratio was 0.13 (IQR, 0.10-0.18). Proportionate FMR (pFMR) and disproportionate FMR (dFMR) was present in 123 and 118 patients, respectively. Compared with patients with pFMR, those with dFMR had higher baseline LV ejection fractions (median, 32% [IQR, 27%-39%] vs 26% [IQR, 22%-33%]; P < .01). Early FMR reduction with TEER was more pronounced in patients with dFMR (odds ratio, 0.45; 95% CI, 0.28-0.74; P < .01) than those with pFMR, but not at 12 months (odds ratio, 0.93; 95% CI, 0.53-1.63; P = .80). Overall, in 35% of patients with initial FMR reduction after TEER, FMR deteriorated again at 1-year follow-up. Rates of 2-year all-cause mortality and heart failure hospitalization were 30% (n = 66) and 37% (n = 76), with no differences between dFMR and pFMR. CONCLUSIONS TEER resulted in more pronounced early FMR reduction in patients with dFMR compared with those with pFMR. Yet after initial improvement, FMR deteriorated in a substantial number of patients, calling into question durable mitral regurgitation reductions with TEER in selected patients. The proportionality framework may not identify durable TEER responders.
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Affiliation(s)
- Joris F Ooms
- Thoraxcenter, Erasmus University Medical Center, Rotterdam, the Netherlands
| | | | | | - Riwa Nasser
- University Hospital Antwerp, Antwerp, Belgium
| | | | | | - Marcel L Geleijnse
- Thoraxcenter, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Isabella Kardys
- Thoraxcenter, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Ernest Spitzer
- Thoraxcenter, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Joost Daemen
- Thoraxcenter, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Peter P De Jaegere
- Thoraxcenter, Erasmus University Medical Center, Rotterdam, the Netherlands
| | | | | | | | - Marc Claeys
- University Hospital Antwerp, Antwerp, Belgium
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81
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Zhang Y, Yan WF, Jiang L, Shen MT, Li Y, Huang S, Shi K, Yang ZG. Aggravation of functional mitral regurgitation on left ventricle stiffness in type 2 diabetes mellitus patients evaluated by CMR tissue tracking. Cardiovasc Diabetol 2021; 20:158. [PMID: 34332579 PMCID: PMC8325822 DOI: 10.1186/s12933-021-01354-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 07/22/2021] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Functional mitral regurgitation (FMR) is one of the most common heart valve diseases in diabetes and may increase left ventricular (LV) preload and aggravate myocardial stiffness. This study aimed to investigate the aggravation of FMR on the deterioration of LV strain in type 2 diabetes mellitus (T2DM) patients and explore the independent indicators of LV peak strain (PS). MATERIALS AND METHODS In total, 157 T2DM patients (59 patients with and 98 without FMR) and 52 age- and sex-matched healthy control volunteers were included and underwent cardiac magnetic resonance examination. T2DM with FMR patients were divided into T2DM patients with mild (n = 21), moderate (n = 19) and severe (n = 19) regurgitation. LV function and global strain parameters were compared among groups. Multivariate analysis was used to identify the independent indicators of LV PS. RESULTS The T2DM with FMR had lower LV strain parameters in radial, circumferential and longitudinal direction than both the normal and the T2DM without FMR (all P < 0.05). The mild had mainly decreased peak diastolic strain rate (PDSR) compared to the normal. The moderate had decreased peak systolic strain rate (PSSR) compared to the normal and PDSR compared to the mild and the normal. The severe FMR group had decreased PDSR and PSSR compared to the mild and the normal (all P < 0.05). Multiple linear regression showed that the regurgitation degree was independent associated with radial (β = - 0.272), circumferential (β = - 0.412) and longitudinal (β = - 0.347) PS; the months with diabetes was independently associated with radial (β = - 0.299) and longitudinal (β = - 0.347) PS in T2DM with FMR. CONCLUSION FMR may aggravate the deterioration of LV stiffness in T2DM patients, resulting in decline of LV strain and function. The regurgitation degree and months with diabetes were independently correlated with LV global PS in T2DM with FMR.
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Affiliation(s)
- Yi Zhang
- Department of Radiology, West China Hospital, Sichuan University, 37# Guo Xue Xiang, Chengdu, 610041, Sichuan, China
| | - Wei-Feng Yan
- Department of Radiology, West China Hospital, Sichuan University, 37# Guo Xue Xiang, Chengdu, 610041, Sichuan, China
| | - Li Jiang
- Department of Radiology, West China Hospital, Sichuan University, 37# Guo Xue Xiang, Chengdu, 610041, Sichuan, China
| | - Meng-Ting Shen
- Department of Radiology, West China Hospital, Sichuan University, 37# Guo Xue Xiang, Chengdu, 610041, Sichuan, China
| | - Yuan Li
- Department of Radiology, West China Hospital, Sichuan University, 37# Guo Xue Xiang, Chengdu, 610041, Sichuan, China
| | - Shan Huang
- Department of Radiology, West China Hospital, Sichuan University, 37# Guo Xue Xiang, Chengdu, 610041, Sichuan, China
| | - Ke Shi
- Department of Radiology, West China Hospital, Sichuan University, 37# Guo Xue Xiang, Chengdu, 610041, Sichuan, China
| | - Zhi-Gang Yang
- Department of Radiology, West China Hospital, Sichuan University, 37# Guo Xue Xiang, Chengdu, 610041, Sichuan, China.
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Tirado-Conte G, McInerney A, Jimenez-Quevedo P, Carnero M, Marroquin Donday LA, De Agustin A, Witberg G, Pozo E, Islas F, Marcos-Alberca P, Cobiella J, Koronowski R, Macaya C, Rodes-Cabau J, Nombela-Franco L. Managing the patient undergoing transcatheter aortic valve replacement with ongoing mitral regurgitation. Expert Rev Cardiovasc Ther 2021; 19:711-723. [PMID: 34275408 DOI: 10.1080/14779072.2021.1955347] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Significant mitral regurgitation (MR) frequently coexists in patients with severe symptomatic aortic stenosis undergoing transcatheter aortic valve replacement (TAVR). These patients have worse clinical outcomes than those with non-significant MR, especially if MR persists after treatment of the aortic stenosis. The optimal treatment approach for this challenging high-risk population is not well defined. AREAS COVERED This review aims to present the current literature on concomitant significant MR in the TAVR population, and to provide a comprehensive algorithmic approach for clinical decision-making in this challenging cohort of patients. EXPERT OPINION Concomitant mitral and aortic valve disease is a complex clinical entity. An exhaustive and comprehensive assessment of patient's clinical characteristics and mitral valve anatomy and function is required in order to assess the surgical risk, predict the MR response after AVR and evaluate the feasibility of percutaneous MV treatment if necessary. Further developments in transcatheter techniques will expand the indications for double valve treatment in operable and inoperable patients with concomitant significant MR and aortic stenosis.
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Affiliation(s)
- Gabriela Tirado-Conte
- Department of Cardiology, Unit of Interventional Cardiology, Cardiovascular Institute, Hospital Clínico San Carlos, Madrid, Spain
| | - Angela McInerney
- Department of Cardiology, Unit of Interventional Cardiology, Cardiovascular Institute, Hospital Clínico San Carlos, Madrid, Spain
| | - Pilar Jimenez-Quevedo
- Department of Cardiology, Unit of Interventional Cardiology, Cardiovascular Institute, Hospital Clínico San Carlos, Madrid, Spain
| | - Manuel Carnero
- Department of Cardiac Surgery, Cardiovascular Institute, Hospital Clínico San Carlos, Madrid, Spain
| | - Luis A Marroquin Donday
- Department of Cardiology, Unit of Interventional Cardiology, Cardiovascular Institute, Hospital Clínico San Carlos, Madrid, Spain
| | - Alberto De Agustin
- Department of Cardiology, Unit of Interventional Cardiology, Cardiovascular Institute, Hospital Clínico San Carlos, Madrid, Spain
| | - Guy Witberg
- Department of Cardiology, Rabin Medical Centre, Petach-Tikvav, Israel.,Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Eduardo Pozo
- Department of Cardiology, Unit of Interventional Cardiology, Cardiovascular Institute, Hospital Clínico San Carlos, Madrid, Spain
| | - Fabian Islas
- Department of Cardiology, Unit of Interventional Cardiology, Cardiovascular Institute, Hospital Clínico San Carlos, Madrid, Spain
| | - Pedro Marcos-Alberca
- Department of Cardiology, Unit of Interventional Cardiology, Cardiovascular Institute, Hospital Clínico San Carlos, Madrid, Spain
| | - Javier Cobiella
- Department of Cardiac Surgery, Cardiovascular Institute, Hospital Clínico San Carlos, Madrid, Spain
| | - Ran Koronowski
- Department of Cardiology, Rabin Medical Centre, Petach-Tikvav, Israel.,Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Carlos Macaya
- Department of Cardiology, Unit of Interventional Cardiology, Cardiovascular Institute, Hospital Clínico San Carlos, Madrid, Spain
| | | | - Luis Nombela-Franco
- Department of Cardiology, Unit of Interventional Cardiology, Cardiovascular Institute, Hospital Clínico San Carlos, Madrid, Spain
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Spampinato RA, Jahnke C, Crelier G, Lindemann F, Fahr F, Czaja-Ziolkowska M, Sieg F, Strotdrees E, Hindricks G, Borger MA, Paetsch I. Quantification of regurgitation in mitral valve prolapse with four-dimensional flow cardiovascular magnetic resonance. J Cardiovasc Magn Reson 2021; 23:87. [PMID: 34233708 PMCID: PMC8265147 DOI: 10.1186/s12968-021-00783-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Accepted: 05/26/2021] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Four-dimensional cardiovascular magnetic resonance (CMR) flow assessment (4D flow) allows to derive volumetric quantitative parameters in mitral regurgitation (MR) using retrospective valve tracking. However, prior studies have been conducted in functional MR or in patients with congenital heart disease, thus, data regarding the usefulness of 4D flow CMR in case of a valve pathology like mitral valve prolapse (MVP) are scarce. This study aimed to evaluate the clinical utility of cine-guided valve segmentation of 4D flow CMR in assessment of MR in MVP when compared to standardized routine CMR and transthoracic echocardiography (TTE). METHODS Six healthy subjects and 54 patients (55 ± 16 years; 47 men) with MVP were studied. TTE severity grading used a multiparametric approach resulting in mild/mild-moderate (n = 12), moderate-severe (n = 12), and severe MR (n = 30). Regurgitant volume (RVol) and regurgitant fraction (RF) were also derived using standard volumetric CMR and 4D flow CMR datasets with direct measurement of regurgitant flow (4DFdirect) and indirect calculation using the formula: mitral valve forward flow - left ventricular outflow tract stroke volume (4DFindirect). RESULTS There was moderate to strong correlation between methods (r = 0.59-0.84, p < 0.001), but TTE proximal isovelocity surface area (PISA) method showed higher RVol as compared with CMR techniques (PISA vs. CMR, mean difference of 15.8 ml [95% CI 9.9-21.6]; PISA vs. 4DFindirect, 17.2 ml [8.4-25.9]; PISA vs. 4DFdirect, 27.9 ml [19.1-36.8]; p < 0.001). Only indirect CMR methods (CMR vs. 4DFindirect) showed moderate to substantial agreement (Lin's coefficient 0.92-0.97) without significant bias (mean bias 1.05 ± 26 ml [- 50 to 52], p = 0.757). Intra- and inter-observer reliability were good to excellent for all methods (ICC 0.87-0.99), but with numerically lower coefficient of variation for indirect CMR methods (2.5 to 12%). CONCLUSIONS In the assessment of patients with MR and MVP, cine-guided valve segmentation 4D flow CMR is feasible and comparable to standard CMR, but with lower RVol when TTE is used as reference. 4DFindirect quantification has higher intra- and inter-technique agreement than 4DFdirect quantification and might be used as an adjunctive technique for cross-checking MR quantification in MVP.
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Affiliation(s)
- Ricardo A Spampinato
- Department of Cardiac Surgery, Heart Center Leipzig at University of Leipzig, Struempellstrasse 39, 04289, Leipzig, Germany.
| | - Cosima Jahnke
- Department of Cardiology and Electrophysiology, Heart Center Leipzig at University of Leipzig, Struempellstrasse 39, 04289, Leipzig, Germany
| | - Gerard Crelier
- Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland
| | - Frank Lindemann
- Department of Cardiology and Electrophysiology, Heart Center Leipzig at University of Leipzig, Struempellstrasse 39, 04289, Leipzig, Germany
| | - Florian Fahr
- Department of Cardiac Surgery, Heart Center Leipzig at University of Leipzig, Struempellstrasse 39, 04289, Leipzig, Germany
| | - Monika Czaja-Ziolkowska
- Department of Cardiology and Electrophysiology, Heart Center Leipzig at University of Leipzig, Struempellstrasse 39, 04289, Leipzig, Germany
| | - Franz Sieg
- Department of Cardiac Surgery, Heart Center Leipzig at University of Leipzig, Struempellstrasse 39, 04289, Leipzig, Germany
| | - Elfriede Strotdrees
- Department of Cardiac Surgery, Heart Center Leipzig at University of Leipzig, Struempellstrasse 39, 04289, Leipzig, Germany
| | - Gerhard Hindricks
- Department of Cardiology and Electrophysiology, Heart Center Leipzig at University of Leipzig, Struempellstrasse 39, 04289, Leipzig, Germany
| | - Michael A Borger
- Department of Cardiac Surgery, Heart Center Leipzig at University of Leipzig, Struempellstrasse 39, 04289, Leipzig, Germany
| | - Ingo Paetsch
- Department of Cardiology and Electrophysiology, Heart Center Leipzig at University of Leipzig, Struempellstrasse 39, 04289, Leipzig, Germany
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84
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Paddock S, Tsampasian V, Assadi H, Mota BC, Swift AJ, Chowdhary A, Swoboda P, Levelt E, Sammut E, Dastidar A, Broncano Cabrero J, Del Val JR, Malcolm P, Sun J, Ryding A, Sawh C, Greenwood R, Hewson D, Vassiliou V, Garg P. Clinical Translation of Three-Dimensional Scar, Diffusion Tensor Imaging, Four-Dimensional Flow, and Quantitative Perfusion in Cardiac MRI: A Comprehensive Review. Front Cardiovasc Med 2021; 8:682027. [PMID: 34307496 PMCID: PMC8292630 DOI: 10.3389/fcvm.2021.682027] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 06/04/2021] [Indexed: 01/05/2023] Open
Abstract
Cardiovascular magnetic resonance (CMR) imaging is a versatile tool that has established itself as the reference method for functional assessment and tissue characterisation. CMR helps to diagnose, monitor disease course and sub-phenotype disease states. Several emerging CMR methods have the potential to offer a personalised medicine approach to treatment. CMR tissue characterisation is used to assess myocardial oedema, inflammation or thrombus in various disease conditions. CMR derived scar maps have the potential to inform ablation therapy—both in atrial and ventricular arrhythmias. Quantitative CMR is pushing boundaries with motion corrections in tissue characterisation and first-pass perfusion. Advanced tissue characterisation by imaging the myocardial fibre orientation using diffusion tensor imaging (DTI), has also demonstrated novel insights in patients with cardiomyopathies. Enhanced flow assessment using four-dimensional flow (4D flow) CMR, where time is the fourth dimension, allows quantification of transvalvular flow to a high degree of accuracy for all four-valves within the same cardiac cycle. This review discusses these emerging methods and others in detail and gives the reader a foresight of how CMR will evolve into a powerful clinical tool in offering a precision medicine approach to treatment, diagnosis, and detection of disease.
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Affiliation(s)
- Sophie Paddock
- Department of Cardiovascular and Metabolic Health, Norwich Medical School, University of East Anglia, Norwich, United Kingdom.,Department of Cardiology, Norfolk and Norwich University Hospital, Norwich, United Kingdom
| | - Vasiliki Tsampasian
- Department of Cardiovascular and Metabolic Health, Norwich Medical School, University of East Anglia, Norwich, United Kingdom
| | - Hosamadin Assadi
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Bruno Calife Mota
- Department of Cardiology, Norfolk and Norwich University Hospital, Norwich, United Kingdom
| | - Andrew J Swift
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Amrit Chowdhary
- Multidisciplinary Cardiovascular Research Centre & Division of Biomedical Imaging, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| | - Peter Swoboda
- Multidisciplinary Cardiovascular Research Centre & Division of Biomedical Imaging, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| | - Eylem Levelt
- Multidisciplinary Cardiovascular Research Centre & Division of Biomedical Imaging, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| | - Eva Sammut
- Bristol Heart Institute and Translational Biomedical Research Centre, Faculty of Health Science, University of Bristol, Bristol, United Kingdom
| | - Amardeep Dastidar
- Bristol Heart Institute and Translational Biomedical Research Centre, Faculty of Health Science, University of Bristol, Bristol, United Kingdom
| | - Jordi Broncano Cabrero
- Cardiothoracic Imaging Unit, Hospital San Juan De Dios, Ressalta, HT Medica, Córdoba, Spain
| | - Javier Royuela Del Val
- Cardiothoracic Imaging Unit, Hospital San Juan De Dios, Ressalta, HT Medica, Córdoba, Spain
| | - Paul Malcolm
- Department of Cardiovascular and Metabolic Health, Norwich Medical School, University of East Anglia, Norwich, United Kingdom
| | - Julia Sun
- Department of Cardiology, Norfolk and Norwich University Hospital, Norwich, United Kingdom
| | - Alisdair Ryding
- Department of Cardiology, Norfolk and Norwich University Hospital, Norwich, United Kingdom
| | - Chris Sawh
- Department of Cardiology, Norfolk and Norwich University Hospital, Norwich, United Kingdom
| | - Richard Greenwood
- Department of Cardiology, Norfolk and Norwich University Hospital, Norwich, United Kingdom
| | - David Hewson
- Department of Cardiology, Norfolk and Norwich University Hospital, Norwich, United Kingdom
| | - Vassilios Vassiliou
- Department of Cardiovascular and Metabolic Health, Norwich Medical School, University of East Anglia, Norwich, United Kingdom
| | - Pankaj Garg
- Department of Cardiovascular and Metabolic Health, Norwich Medical School, University of East Anglia, Norwich, United Kingdom.,Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
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85
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Brennan S, Sulong S, Barrett M. Left ventricular pseudoaneurysm: an inadvertent consequence of COVID-19-a case report. Eur Heart J Case Rep 2021; 5:ytab203. [PMID: 34458676 PMCID: PMC8374318 DOI: 10.1093/ehjcr/ytab203] [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: 11/24/2020] [Revised: 02/23/2021] [Accepted: 05/06/2021] [Indexed: 11/13/2022]
Abstract
Background Left ventricular pseudoaneurysm (LVP) is an uncommon but serious mechanical complication of acute myocardial infarction (AMI). The immediate medical complications of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are well recognized, but its indirect effect on patients and healthcare systems is potentially less perceivable. Case summary In this report, a 72-year-old man who was anxious about attending hospital during the SARS-CoV-2 pandemic was eventually found to have a total right coronary artery occlusion after a delayed emergency department presentation. He ultimately developed severe symptomatic heart failure and cardiac magnetic resonance imaging (CMR) revealed that a large LVP with concomitant severe ischaemic mitral regurgitation had evolved from his infarct. The patient was successfully discharged home after the surgical replacement of his mitral valve and repair of his LVP. Discussion This case highlights a salient downstream effect of Coronavirus disease 2019 (COVID-19): the delay in presentation, diagnosis, and management of common treatable conditions such as AMI. It also underscores the importance of non-invasive multimodal imaging on the timely identification of the mechanical complications of AMI. In particular, CMR can play a crucial role in the characterization and management of LVP.
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Affiliation(s)
- Stephen Brennan
- Department of Cardiology, St. Vincent's University Hospital, Elm Park, Dublin 4, D04 T6F4, Ireland
| | - Saadah Sulong
- Department of Cardiology, St. Vincent's University Hospital, Elm Park, Dublin 4, D04 T6F4, Ireland
| | - Matthew Barrett
- Department of Cardiology, St. Vincent's University Hospital, Elm Park, Dublin 4, D04 T6F4, Ireland
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86
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Abstract
MRI is an essential diagnostic tool in the anatomic and functional evaluation of cardiovascular disease. In many practices, 2D phase-contrast (2D-PC) has been used for blood flow quantification. 4D Flow MRI is a time-resolved volumetric acquisition that captures the vector field of blood flow along with anatomic images. 4D Flow MRI provides a simpler acquisition compared to 2D-PC and facilitates a more accurate and comprehensive hemodynamic assessment. Advancements in accelerated imaging have significantly shortened scan times of 4D Flow MRI while preserving image quality, enabling this technology to transition from the research arena to routine clinical practice. In this article, we review technical optimization based on our clinical experience of over 10 years with 4D Flow MRI. We also present pearls and pitfalls in the practical application of 4D Flow MRI, including how to quantify cardiovascular shunts, valvular or vascular stenosis, and valvular regurgitation. As experience increases, and as 4D Flow sequences and post-processing software become more broadly available, 4D Flow MRI will likely become an essential component of cardiac imaging for practices involved in the management of congenital and acquired structural heart disease.
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87
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Reid A, Blanke P, Bax JJ, Leipsic J. Multimodality imaging in valvular heart disease: how to use state-of-the-art technology in daily practice. Eur Heart J 2021; 42:1912-1925. [PMID: 33186469 DOI: 10.1093/eurheartj/ehaa768] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 06/15/2020] [Accepted: 09/08/2020] [Indexed: 12/16/2022] Open
Abstract
Our understanding of the complexities of valvular heart disease (VHD) has evolved in recent years, primarily because of the increased use of multimodality imaging (MMI). Whilst echocardiography remains the primary imaging technique, the contemporary evaluation of patients with VHD requires comprehensive analysis of the mechanism of valvular dysfunction, accurate quantification of severity, and active exclusion extravalvular consequences. Furthermore, advances in surgical and percutaneous therapies have driven the need for meticulous multimodality imaging to aid in patient and procedural selection. Fundamental decision-making regarding whom, when, and how to treat patients with VHD has become more complex. There has been rapid technological advancement in MMI; many techniques are now available in routine clinical practice, and their integration into has the potential to truly individualize management strategies. This review provides an overview of the current evidence for the use of MMI in VHD, and how various techniques within each modality can be used practically to answer clinical conundrums.
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Affiliation(s)
- Anna Reid
- Department of Radiology and Cardiology, Center for Heart Lung Innovation, St. Paul's Hospital, University of British Columbia, 1081 Burrard Street, Vancouver V6Z1Y6, BC, Canada
| | - Philipp Blanke
- Department of Radiology and Cardiology, Center for Heart Lung Innovation, St. Paul's Hospital, University of British Columbia, 1081 Burrard Street, Vancouver V6Z1Y6, BC, Canada
| | - Jeroen J Bax
- Department of Cardiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, Netherlands
| | - Jonathon Leipsic
- Department of Radiology and Cardiology, Center for Heart Lung Innovation, St. Paul's Hospital, University of British Columbia, 1081 Burrard Street, Vancouver V6Z1Y6, BC, Canada
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88
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Chowdhary A, Garg P, Das A, Nazir MS, Plein S. Cardiovascular magnetic resonance imaging: emerging techniques and applications. Heart 2021; 107:697-704. [PMID: 33402364 PMCID: PMC7611390 DOI: 10.1136/heartjnl-2019-315669] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 11/02/2020] [Accepted: 11/23/2020] [Indexed: 01/15/2023] Open
Abstract
This review gives examples of emerging cardiovascular magnetic resonance (CMR) techniques and applications that have the potential to transition from research to clinical application in the near future. Four-dimensional flow CMR (4D-flow CMR) allows time-resolved three-directional, three-dimensional (3D) velocity-encoded phase-contrast imaging for 3D visualisation and quantification of valvular or intracavity flow. Acquisition times of under 10 min are achievable for a whole heart multidirectional data set and commercial software packages are now available for data analysis, making 4D-flow CMR feasible for inclusion in clinical imaging protocols. Diffusion tensor imaging (DTI) is based on the measurement of molecular water diffusion and uses contrasting behaviour in the presence and absence of boundaries to infer tissue structure. Cardiac DTI is capable of non-invasively phenotyping the 3D micro-architecture within a few minutes, facilitating transition of the method to clinical protocols. Hybrid positron emission tomography-magnetic resonance (PET-MR) provides quantitative PET measures of biological and pathological processes of the heart combined with anatomical, morphological and functional CMR imaging. Cardiac PET-MR offers opportunities in ischaemic, inflammatory and infiltrative heart disease.
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Affiliation(s)
- Amrit Chowdhary
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, West Yorkshire, UK
| | - Pankaj Garg
- Cardiovascular and Metabolic Medicine Group, University of East Anglia, Norwich, UK
| | - Arka Das
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, West Yorkshire, UK
| | - Muhummad Sohaib Nazir
- School of Biomedical Engineering and Imaging Sciences, King's College London, London, UK
| | - Sven Plein
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, West Yorkshire, UK
- School of Biomedical Engineering and Imaging Sciences, King's College London, London, UK
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89
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Kim DH. Multimodality Imaging for the Assessment of Mitral Valve Disease. Cardiol Clin 2021; 39:243-253. [PMID: 33894938 DOI: 10.1016/j.ccl.2021.01.007] [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] [Indexed: 11/25/2022]
Abstract
Mitral valve disease is the most common valvular heart disease. Imaging determines the etiology (anatomic assessment), valve function and severity of valvular heart disease (hemodynamic assessment), remodeling of the left ventricle and right ventricle, and preplanning and guidance of percutaneous intervention. Although roles of computed tomography and magnetic resonance are increasing, echocardiography serves as the first-line imaging modality for the diagnosis and serial follow-up in most cases. This review summarizes the roles of multimodality imaging currently available from research fields to daily clinical practice.
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Affiliation(s)
- Dae-Hee Kim
- Division of Cardiology, Asan Medical Center, College of Medicine, University of Ulsan, 388-1, Poongnap-dong, Songpa-ku, Seoul 138-736, Korea.
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90
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Corpataux N, Brugger N, Hunziker L, Reineke D, Windecker S, Vahanian A, Praz F. The role of transcatheter mitral valve leaflet approximation for the treatment of secondary mitral regurgitation: current status and future prospects. Expert Rev Med Devices 2021; 18:261-272. [PMID: 33682563 DOI: 10.1080/17434440.2021.1899804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Introduction: Secondary mitral regurgitation (SMR) is one of the most common valvulopathies and is associated with poor prognosis. Over the past years, medical management and mitral valve repair options have rapidly evolved offering new opportunities for a wide range of patients.Areas covered: We provide an up-to-date review of the value of medical and transcatheter mitral valve leaflet approximation for SMR integrating the results of most recent trials and putting their findings into clinical perspective.Expert opinion: Treatment of SMR requires a multidisciplinary approach with a long-term perspective. After optimization of medical treatment, transcatheter mitral valve repair should be considered in patients with persisting symptomatic severe SMR to improve symptoms and prognosis.
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Affiliation(s)
- Noé Corpataux
- Department of Cardiology, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Nicolas Brugger
- Department of Cardiology, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Lukas Hunziker
- Department of Cardiology, Bern University Hospital, University of Bern, Bern, Switzerland
| | - David Reineke
- Department of Cardiovascular Surgery, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Stephan Windecker
- Department of Cardiology, Bern University Hospital, University of Bern, Bern, Switzerland
| | | | - Fabien Praz
- Department of Cardiology, Bern University Hospital, University of Bern, Bern, Switzerland
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91
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Delgado V, Yedidya I. Assessment of Secondary Mitral Regurgitation: Is Cardiovascular Magnetic Resonance 1-Stop Shop Imaging Technique? JACC Cardiovasc Imaging 2021; 14:840-842. [PMID: 33744140 DOI: 10.1016/j.jcmg.2021.01.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 01/28/2021] [Indexed: 11/26/2022]
Affiliation(s)
- Victoria Delgado
- Department of Cardiology, Leiden University Medical Centre, Leiden, the Netherlands.
| | - Idit Yedidya
- Department of Cardiology, Leiden University Medical Centre, Leiden, the Netherlands; Department of Cardiology, Rabin Medical Center, Petah-Tikva, Israel
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92
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Abstract
Purpose of Review The purpose of this review is to summarize the application of cardiac magnetic resonance (CMR) in the diagnostic and prognostic evaluation of patients with heart failure (HF). Recent Findings CMR is an important non-invasive imaging modality in the assessment of ventricular volumes and function and in the analysis of myocardial tissue characteristics. The information derived from CMR provides a comprehensive evaluation of HF. Its unique ability of tissue characterization not only helps to reveal the underlying etiologies of HF but also offers incremental prognostic information. Summary CMR is a useful non-invasive tool for the diagnosis and assessment of prognosis in patients suffering from heart failure.
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Affiliation(s)
- Chuanfen Liu
- Cardiovascular Division, Department of Medicine, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA USA
- Department of Cardiology, Peking University People’s Hospital, Beijing, China
| | - Victor A. Ferrari
- Cardiovascular Division, Department of Medicine, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA USA
| | - Yuchi Han
- Cardiovascular Division, Department of Medicine, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA USA
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93
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Arrhythmic Mitral Valve Prolapse: Introducing an Era of Multimodality Imaging-Based Diagnosis and Risk Stratification. Diagnostics (Basel) 2021; 11:diagnostics11030467. [PMID: 33800155 PMCID: PMC7999774 DOI: 10.3390/diagnostics11030467] [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] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 03/04/2021] [Accepted: 03/05/2021] [Indexed: 01/13/2023] Open
Abstract
Mitral valve prolapse is a common cardiac condition, with an estimated prevalence between 1% and 3%. Most patients have a benign course, but ever since its initial description mitral valve prolapse has been associated to sudden cardiac death. Although the causal relationship between mitral valve prolapse and sudden cardiac death has never been clearly demonstrated, different factors have been implicated in arrhythmogenesis in patients with mitral valve prolapse. In this work, we offer a comprehensive overview of the etiology and the genetic background, epidemiology, pathophysiology, and we focus on the state-of-the-art imaging-based diagnosis of mitral valve prolapse. Going beyond the classical, well-described clinical factors, such as young age, female gender and auscultatory findings, we investigate multimodality imaging features, such as alterations of anatomy and function of the mitral valve and its leaflets, the structural and contractile anomalies of the myocardium, all of which have been associated to sudden cardiac death.
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94
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The mitral regurgitation effects of cardiac structure and function in left ventricular noncompaction. Sci Rep 2021; 11:4616. [PMID: 33633309 PMCID: PMC7907249 DOI: 10.1038/s41598-021-84233-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 02/11/2021] [Indexed: 02/05/2023] Open
Abstract
This study evaluated the effects of mitral regurgitation (MR) on cardiac structure and function in left ventricular noncompaction (LVNC) patients. The clinical and cardiovascular magnetic resonance (CMR) data for 182 patients with noncompaction or hypertrabeculation from three institutes were retrospectively included. We analyzed the difference in left ventricular geometry, cardiac function between LVNC patients with and without MR. The results showed that patients with MR had a worse New York Heart Association (NYHA) class and a higher incidence of arrhythmia (P < 0.05). MR occurred in 48.2% of LVNC patients. Compared to LVNC patients without MR, the two-dimensional sphericity index, maximum/minimum end-diastolic ratio and longitudinal shortening in LVNC patients with MR were lower (P < 0.05), and the peak longitudinal strain (PLS) of the global and segmental myocardium were obviously reduced (P < 0.05). No significant difference was found in strain in LVNC patients with different degree of MR; end diastolic volume, end systolic volume, and global PLS were statistically associated with MR and NYHA class (P < 0.05), but the non-compacted to compacted myocardium ratio had no significant correlation with them. In conclusion, the presence of MR is common in LVNC patients. LVNC patients with MR feature more severe morphological and functional changes. Hypertrabeculation is not an important factor affecting structure and function at the heart failure stage.
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95
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Nikolou E, Bilkhu R, Kafil TS, Demetrescu C, Kotta PA, Lucchese G, Tzemos N, Grapsa J. Multimodality Imaging in Transcatheter Mitral Interventions. Front Cardiovasc Med 2021; 8:638399. [PMID: 33718458 PMCID: PMC7950542 DOI: 10.3389/fcvm.2021.638399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Accepted: 01/29/2021] [Indexed: 11/21/2022] Open
Abstract
Multimodality imaging is of imperative value for the planning and guidance of transcatheter mitral valve interventions. This review employs the value of different imaging modalities and future implications for clinical practice.
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Affiliation(s)
- Evgenia Nikolou
- Department of Cardiology, St George's University Hospitals NHS Foundation Trust, London, United Kingdom
| | - Rajdeep Bilkhu
- Department of Cardiothoracic Surgery, Guys and St Thomas NHS Hospitals Trust, London, United Kingdom
| | - Tahir S. Kafil
- Department of Cardiology, Western University, London, ON, Canada
| | - Camelia Demetrescu
- Department of Cardiology, Guys and St Thomas NHS Hospitals Trust, London, United Kingdom
| | - Prasanti Alekhya Kotta
- Department of Cardiology, Guys and St Thomas NHS Hospitals Trust, London, United Kingdom
| | - Gianluca Lucchese
- Department of Cardiothoracic Surgery, Guys and St Thomas NHS Hospitals Trust, London, United Kingdom
| | - Nikolaos Tzemos
- Department of Cardiology, Western University, London, ON, Canada
| | - Julia Grapsa
- Department of Cardiology, Guys and St Thomas NHS Hospitals Trust, London, United Kingdom
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96
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van Wijngaarden AL, Kruithof BPT, Vinella T, Barge-Schaapveld DQCM, Ajmone Marsan N. Characterization of Degenerative Mitral Valve Disease: Differences between Fibroelastic Deficiency and Barlow's Disease. J Cardiovasc Dev Dis 2021; 8:23. [PMID: 33671724 PMCID: PMC7926852 DOI: 10.3390/jcdd8020023] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 02/17/2021] [Accepted: 02/19/2021] [Indexed: 12/18/2022] Open
Abstract
Degenerative mitral valve disease causing mitral valve prolapse is the most common cause of primary mitral regurgitation, with two distinct phenotypes generally recognized with some major differences, i.e., fibroelastic deficiency (FED) and Barlow's disease. The aim of this review was to describe the main histological, clinical and echocardiographic features of patients with FED and Barlow's disease, highlighting the differences in diagnosis, risk stratification and patient management, but also the still significant gaps in understanding the exact pathophysiology of these two phenotypes.
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Affiliation(s)
- Aniek L. van Wijngaarden
- Department of Cardiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands; (A.L.v.W.); (B.P.T.K.)
| | - Boudewijn P. T. Kruithof
- Department of Cardiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands; (A.L.v.W.); (B.P.T.K.)
| | - Tommaso Vinella
- Faculty of Medicine, University of Southampton, Southampton SO17 1BJ, UK;
| | | | - Nina Ajmone Marsan
- Department of Cardiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands; (A.L.v.W.); (B.P.T.K.)
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97
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Salvatore T, Ricci F, Dangas GD, Rana BS, Ceriello L, Testa L, Khanji MY, Caterino AL, Fiore C, Popolo Rubbio A, Appignani M, Di Fulvio M, Bedogni F, Gallina S, Zimarino M. Selection of the Optimal Candidate to MitraClip for Secondary Mitral Regurgitation: Beyond Mitral Valve Morphology. Front Cardiovasc Med 2021; 8:585415. [PMID: 33614745 PMCID: PMC7887290 DOI: 10.3389/fcvm.2021.585415] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 01/08/2021] [Indexed: 11/13/2022] Open
Abstract
Secondary mitral regurgitation (MR) occurs despite structurally normal valve apparatus due to an underlying disease of the myocardium leading to disruption of the balance between tethering and closing forces with ensuing failure of leaflet coaptation. In patients with heart failure (HF) and left ventricular dysfunction, secondary MR is independently associated with poor outcome, yet prognostic benefits related to the correction of MR have remained elusive. Surgery is not recommended for the correction of secondary MR outside coronary artery bypass grafting. Percutaneous mitral valve repair (PMVR) with MitraClip implantation has recently evolved as a new transcatheter treatment option of inoperable or high-risk patients with severe MR, with promising results supporting the extension of guideline recommendations. MitraClip is highly effective in reducing secondary MR in HF patients. However, the derived clinical benefit is still controversial as two randomized trials directly comparing PMVR vs. optimal medical therapy in severe secondary MR yielded virtually opposite conclusions. We reviewed current evidence to identify predictors of PMVR-related outcomes in secondary MR useful to improve the timing and the selection of patients who would derive maximal benefit from MitraClip intervention. Beyond mitral valve anatomy, optimal candidate selection should rely on a comprehensive diagnostic workup and a fine-tuned risk stratification process aimed at (i) recognizing the substantial heterogeneity of secondary MR and its complex interaction with the myocardium, (ii) foreseeing hemodynamic consequences of PMVR, (iii) anticipating futility and (iv) improving symptoms, quality of life and overall survival.
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Affiliation(s)
- Tanya Salvatore
- Institute of Cardiology, "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy.,Department of Cardiology, IRCCS Pol. S. Donato, S. Donato Milanese, Milan, Italy
| | - Fabrizio Ricci
- Department of Clinical Sciences, Clinical Research Center, Lund University, Malmö, Sweden.,Department of Neuroscience, Imaging and Clinical Sciences, "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy.,Casa di Cura Villa Serena, Città Sant'Angelo, Pescara, Italy
| | - George D Dangas
- Icahn School of Medicine at Mount Sinai, The Zena and Michael A. Wiener Cardiovascular Institute, New York, NY, United States
| | - Bushra S Rana
- Imperial College Healthcare Trust, Hammersmith and Charing Cross Hospitals, London, United Kingdom
| | - Laura Ceriello
- Institute of Cardiology, "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Luca Testa
- Department of Cardiology, IRCCS Pol. S. Donato, S. Donato Milanese, Milan, Italy
| | - Mohammed Y Khanji
- NIHR Barts Biomedical Research Centre, William Harvey Research Institute, Queen Mary University of London, London, United Kingdom.,Barts Heart Centre, St. Bartholomew's Hospital, Barts Health NHS Trust, London, United Kingdom
| | - Anna Laura Caterino
- Institute of Cardiology, "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | | | | | - Marianna Appignani
- Institute of Cardiology, "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Maria Di Fulvio
- Institute of Cardiology, "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Francesco Bedogni
- Department of Cardiology, IRCCS Pol. S. Donato, S. Donato Milanese, Milan, Italy
| | - Sabina Gallina
- Institute of Cardiology, "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Marco Zimarino
- Institute of Cardiology, "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy.,Interventional Cath Lab, Chieti, Italy
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98
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4D flow MRI left atrial kinetic energy in hypertrophic cardiomyopathy is associated with mitral regurgitation and left ventricular outflow tract obstruction. Int J Cardiovasc Imaging 2021; 37:2755-2765. [PMID: 33523363 DOI: 10.1007/s10554-021-02167-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 01/17/2021] [Indexed: 10/22/2022]
Abstract
To noninvasively assess left atrial (LA) kinetic energy (KE) in hypertrophic cardiomyopathy (HCM) patients using 4D flow MRI and evaluate coupling associations with mitral regurgitation (MR) and left ventricular outflow tract (LVOT) obstruction. Twenty-nine retrospectively identified patients with HCM underwent 4D flow MRI. MRI-estimated peak LVOT pressure gradient (∆PMRI) was used to classify patients into non-obstructive and obstructive HCM. Time-resolved volumetric LA kinetic energy (KELA) was computed throughout systole. Average systolic (KELA-avg) and peak systolic (KELA-peak) KELA were compared between non-obstructive and obstructive HCM groups, and associations to MR severity and LVOT ∆PMRI were tested.The study included 15 patients with non-obstructive HCM (58.6 [45.9, 65.2] years, 7 females) and 14 patients with obstructive HCM (51.9 [47.6, 62.6] years, 6 females). Obstructive HCM patients demonstrated significantly elevated instantaneous KELA over all systolic time-points compared to non-obstructive HCM (P < 0.05). Obstructive HCM patients also demonstrated higher KELA-avg (14.8 [10.6, 20.4] J/m3 vs. 33.4 [23.9, 61.3] J/m3, P < 0.001) and KELA-peak (22.1 [15.9, 28.7] J/m3 vs. 57.2 [44.5, 121.4] J/m3, P < 0.001) than non-obstructive HCM. MR severity was significantly correlated with KELA-avg (rho = 0.81, P < 0.001) and KELA-peak (rho = 0.79, P < 0.001). LVOT ∆PMRI was strongly correlated with KELA metrics in obstructive HCM (KELA-avg: rho = 0.86, P < 0.001; KELA-peak: rho = 0.85, P < 0.001).In HCM patients, left atrial kinetic energy, by 4D flow MRI, is associated with MR severity and the degree of LVOT obstruction.
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99
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Intracardiac and Vascular Hemodynamics with Cardiovascular Magnetic Resonance in Heart Failure. Heart Fail Clin 2021; 17:135-147. [PMID: 33220882 DOI: 10.1016/j.hfc.2020.08.010] [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] [Indexed: 11/23/2022]
Abstract
In heart failure (HF), the impaired heart loses its ability to competently eject blood during systole or fill with blood during diastole, manifesting in multifaceted abnormal intracardiac or intravascular flow dynamics. Conventional imaging techniques are limited in their ability to evaluate multidirectional multidimensional flow alterations in HF. Four-dimensional (4-D) flow magnetic resonance imaging (MRI) has emerged as a promising technique to comprehensively visualize and quantify changes in 3-dimensional blood flow dynamics in complex cardiovascular diseases. This article reviews emerging applications of 4-D flow MRI hemodynamic markers in HF and etiologies at risk of progressing to HF.
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100
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Wang J, Jia Y, Wang Q, Liang Z, Han G, Wang Z, Lee J, Zhao M, Li F, Bai R, Ling D. An Ultrahigh-Field-Tailored T 1 -T 2 Dual-Mode MRI Contrast Agent for High-Performance Vascular Imaging. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2004917. [PMID: 33263204 DOI: 10.1002/adma.202004917] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/25/2020] [Indexed: 05/20/2023]
Abstract
The assessment of vascular anatomy and functions using magnetic resonance imaging (MRI) is critical for medical diagnosis, whereas the commonly used low-field MRI system (≤3 T) suffers from low spatial resolution. Ultrahigh field (UHF) MRI (≥7 T), with significantly improved resolution and signal-to-noise ratio, shows great potential to provide high-resolution vasculature images. However, practical applications of UHF MRI technology for vascular imaging are currently limited by the low sensitivity and accuracy of single-mode (T1 or T2 ) contrast agents. Herein, a UHF-tailored T1 -T2 dual-mode iron oxide nanoparticle-based contrast agent (UDIOC) with extremely small core size and ultracompact hydrophilic surface modification, exhibiting dually enhanced T1 -T2 contrast effect under the 7 T magnetic field, is reported. The UDIOC enables clear visualization of microvasculature as small as ≈140 µm in diameter under UHF MRI, extending the detection limit of the 7 T MR angiography. Moreover, by virtue of high-resolution UHF MRI and a simple double-checking process, UDIOC-based dual-mode dynamic contrast-enhanced MRI is successfully applied to detect tumor vascular permeability with extremely high sensitivity and accuracy, providing a novel paradigm for the precise medical diagnosis of vascular-related diseases.
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Affiliation(s)
- Jin Wang
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Yinhang Jia
- Interdisciplinary Institute of Neuroscience and Technology, School of Medicine, Zhejiang University, Hangzhou, 310029, P. R. China
| | - Qiyue Wang
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Zeyu Liang
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
- Hangzhou Institute of Innovative Medicine, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Guangxu Han
- Interdisciplinary Institute of Neuroscience and Technology, School of Medicine, Zhejiang University, Hangzhou, 310029, P. R. China
| | - Zejun Wang
- Interdisciplinary Institute of Neuroscience and Technology, School of Medicine, Zhejiang University, Hangzhou, 310029, P. R. China
| | - Jiyoung Lee
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Meng Zhao
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
- Hangzhou Institute of Innovative Medicine, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Fangyuan Li
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Ruiliang Bai
- Interdisciplinary Institute of Neuroscience and Technology, School of Medicine, Zhejiang University, Hangzhou, 310029, P. R. China
- Key Laboratory of Biomedical Engineering of the Ministry of Education, College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, 310027, P. R. China
- Department of Physical Medicine and Rehabilitation of The Affiliated Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, 310029, P. R. China
| | - Daishun Ling
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
- Key Laboratory of Biomedical Engineering of the Ministry of Education, College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, 310027, P. R. China
- Hangzhou Institute of Innovative Medicine, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
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