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Cardiovascular magnetic resonance CMR

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https://www.readbyqxmd.com/read/29774406/reduced-global-myocardial-perfusion-reserve-in-dcm-and-hcm-patients-assessed-by-cmr-based-velocity-encoded-coronary-sinus-flow-measurements-and-first-pass-perfusion-imaging
#1
Michael Bietenbeck, Anca Florian, Zornitsa Shomanova, Claudia Meier, Ali Yilmaz
BACKGROUND: Coronary microvascular dysfunction (CMD) is an independent predictor of poor prognosis in patients suffering from dilative or hypertrophic cardiomyopathy (DCM/HCM). To assess CMD, quantitative myocardial first-pass perfusion (1P) cardiovascular magnetic resonance (CMR) can be performed. Coronary sinus flow (CSF) measurements at rest and during maximal vasodilatation are an alternative and well-validated approach for the quantification of global myocardial blood flow (MBF) in CMR...
May 17, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29774187/multimodality-imaging-for-the-quantitative-assessment-of-mitral-regurgitation
#2
REVIEW
Pei G Chew, Katrina Bounford, Sven Plein, Dominik Schlosshan, John P Greenwood
The natural history of mitral regurgitation (MR) results in significant morbidity and mortality. Innovations in non-invasive imaging have provided new insights into the pathophysiology and quantification of MR, in addition to early detection of left ventricular (LV) dysfunction and prognostic assessment in asymptomatic patients. Transthoracic (TTE) and transesophageal (TOE) echocardiography are the mainstay for diagnosis, assessment and serial surveillance. However, the advance from 2D to 3D imaging leads to improved assessment and characterization of mitral valve (MV) disease...
April 2018: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/29767292/short-axis-diastolic-ventricular-area-ratio-as-a-new-index-in-screening-patients-with-repaired-tetralogy-of-fallot
#3
Dala Zakaria, Sean Lang, Mallikarjuna Rettiganti, Jeffrey M Gossett, Elijah Bolin, R Thomas Collins
Right ventricular (RV) end-diastolic volume measured by cardiovascular magnetic resonance imaging (CMR) is a criterion for pulmonary valve replacement in patients with tetralogy of Fallot (TOF). We sought to determine if the ratio of echocardiographic, short-axis RV-to-left ventricular (LV) end-diastolic areas (EDA) could be used to predict RV volume on CMR. We retrospectively reviewed the echocardiograms of all patients with repaired TOF who underwent CMR at our institution from 2011 to 2015 and also had an echocardiogram within 6 months of the CMR...
May 16, 2018: Pediatric Cardiology
https://www.readbyqxmd.com/read/29766285/impact-of-left-ventricular-hypertrophy-on-myocardial-injury-in-patients-with-st-segment-elevation-myocardial-infarction
#4
Thomas Stiermaier, Janine Pöss, Charlotte Eitel, Suzanne de Waha, Georg Fuernau, Steffen Desch, Holger Thiele, Ingo Eitel
BACKGROUND: Left ventricular hypertrophy (LVH) has been suggested as a determinant of outcome in patients with ST-segment elevation myocardial infarction (STEMI). However, available data are inconclusive and the underlying mechanisms remain unclear. Therefore, the aim of this study was to evaluate the impact of LVH on myocardial injury and clinical outcome in a large multicenter STEMI population. METHODS: Cardiovascular magnetic resonance was performed in 795 patients within 10 days after STEMI to assess left ventricular (LV) mass and parameters of myocardial injury...
May 16, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29759739/aortic-valve-bypass-surgery-in-severe-aortic-valve-stenosis-insights-from-cardiac-and-brain-magnetic-resonance-imaging
#5
Cesare Mantini, Massimo Caulo, Daniele Marinelli, Piero Chiacchiaretta, Armando Tartaro, Antonio Raffaele Cotroneo, Gabriele Di Giammarco
OBJECTIVE: To investigate and describe the distribution of aortic and cerebral blood flow (CBF) in patients with severe valvular aortic stenosis (AS) before and after aortic valve bypass (AVB) surgery. METHODS: We enrolled 10 consecutive patients who underwent AVB surgery for severe AS. Cardiovascular magnetic resonance imaging (CMR) and brain magnetic resonance imaging were performed as baseline before surgery and twice after surgery. Quantitative flow measurements were obtained using 1...
April 13, 2018: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29754182/assessment-of-aortic-stiffness-in-patients-with-ankylosing-spondylitis-using-cardiovascular-magnetic-resonance
#6
P Stefan Biesbroek, Sjoerd C Heslinga, Peter M van de Ven, Mike J L Peters, Raquel P Amier, Thelma C Konings, Christopher D Maroules, Colby Ayers, Parag H Joshi, Irene E van der Horst-Bruinsma, Vokko P van Halm, Albert C van Rossum, Michael T Nurmohamed, Robin Nijveldt
To evaluate aortic stiffness in patients with ankylosing spondylitis (AS) using cardiovascular magnetic resonance (CMR) and to assess its association with AS characteristics and left ventricular (LV) remodeling. In this prospective study, 14 consecutive AS patients were each matched to two controls without cardiovascular symptoms or known cardiovascular disease who underwent CMR imaging for the assessment of aortic arch pulse wave velocity (PWV) at 1.5 Tesla. To enhance comparability of the samples, matching was done with replacement resulting in 20 unique controls...
May 12, 2018: Clinical Rheumatology
https://www.readbyqxmd.com/read/29739967/using-all-cause-mortality-to-define-severe-rv-dilation-with-rv-lv-volume-ratio
#7
Stephan P L Altmayer, Q Joyce Han, Karima Addetia, Amit R Patel, Paul R Forfia, Yuchi Han
Right ventricular (RV) end-diastolic volume (EDV) to left ventricular (LV) EDV ratio using cardiovascular magnetic resonance imaging (CMR) is an important parameter for RV size evaluation in additional to indexed EDV. We explore the severity partition for RV dilation using mortality in a population of 62 patients with pulmonary hypertension (PH). Cine short-axis images were acquired with a 1.5 T MR scanner using a steady-state free precession sequence. The optimal cutoff to classify severe RV dilation was determined by a receiver-operating curve (ROC) analysis based on mortality...
May 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29730991/feasibility-of-cardiovascular-magnetic-resonance-to-detect-oxygenation-deficits-in-patients-with-multi-vessel-coronary-artery-disease-triggered-by-breathing-maneuvers
#8
Kady Fischer, Kyohei Yamaji, Silvia Luescher, Yasushi Ueki, Bernd Jung, Hendrik von Tengg-Kobligk, Stephan Windecker, Matthias G Friedrich, Balthasar Eberle, Dominik P Guensch
BACKGROUND: Hyperventilation with a subsequent breath-hold has been successfully used as a non-pharmacological vasoactive stimulus to induce changes in myocardial oxygenation. The purpose of this pilot study was to assess if this maneuver is feasible in patients with multi-vessel coronary artery disease (CAD), and if it is effective at detecting coronary artery stenosis > 50% determined by quantitative coronary angiography (QCA). METHODS: Twenty-six patients with coronary artery stenosis (QCA > 50% diameter stenosis) underwent a contrast-free cardiovascular magnetic resonance (CMR) exam in the time interval between their primary coronary angiography and a subsequent percutaneous coronary intervention (PCI, n = 24) or coronary artery bypass (CABG, n = 2) revascularization procedure...
May 7, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29725812/postmortem-cardiac-magnetic-resonance-in-sudden-cardiac-death
#9
REVIEW
Benedetta Guidi, Giovanni Donato Aquaro, Marco Gesi, Michele Emdin, Marco Di Paolo
Postmortem imaging is increasingly used in forensic practice as good complementary tool to conventional autopsy investigations. Over the last decade, postmortem cardiac magnetic resonance (PMCMR) imaging was introduced in forensic investigations of natural deaths related to cardiovascular diseases, which represent the most common causes of death in developed countries. Postmortem CMR application has yielded interesting results in ischemic myocardium injury investigations and in visualizing other pathological findings in the heart...
May 4, 2018: Heart Failure Reviews
https://www.readbyqxmd.com/read/29720202/optimization-of-late-gadolinium-enhancement-cardiovascular-magnetic-resonance-imaging-of-post-ablation-atrial-scar-a-cross-over-study
#10
Henry Chubb, Shadman Aziz, Rashed Karim, Christian Sohns, Orod Razeghi, Steven E Williams, John Whitaker, James Harrison, Amedeo Chiribiri, Tobias Schaeffter, Matthew Wright, Mark O'Neill, Reza Razavi
BACKGROUND: Cardiovascular magnetic resonance (CMR) imaging may be used to visualize post-ablation atrial scar (PAAS), and three-dimensional late gadolinium enhancement (3D LGE) is the most widely employed technique for imaging of chronic scar. Detection of PAAS provides a unique non-invasive insight into the effects of the ablation and may help guide further ablation procedures. However, there is evidence that PAAS is often not detected by CMR, implying a significant sensitivity problem, and imaging parameters vary between leading centres...
May 3, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29706134/additive-value-of-3t-cardiovascular-magnetic-resonance-coronary-angiography-for-detecting-coronary-artery-disease
#11
Lijun Zhang, Xiantao Song, Li Dong, Jianan Li, Ruiyu Dou, Zhanming Fan, Jing An, Debiao Li
BACKGROUND: The purpose of the work was to evaluate the incremental diagnostic value of free-breathing, contrast-enhanced, whole-heart, 3 T cardiovascular magnetic resonance coronary angiography (CE-MRCA) to stress/rest myocardial perfusion imaging (MPI) and late gadolinium enhancement (LGE) imaging for detecting coronary artery disease (CAD). METHODS: Fifty-one patients with suspected CAD underwent a comprehensive cardiovascular magnetic resonance (CMR) examination (CE-MRCA, MPI, and LGE)...
April 30, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29696693/cardiovascular-magnetic-resonance-assessment-of-1st-generation-corevalve-and-2nd-generation-lotus-valves
#12
Tarique Al Musa, Akhlaque Uddin, Laura E Dobson, Peter P Swoboda, Pankaj Garg, James R J Foley, Christopher Malkin, Sven Plein, Daniel J Blackman, John P Greenwood
OBJECTIVES: We sought to compare using serial CMR, the quantity of AR and associated valve hemodynamics, following the first-generation CoreValve (Medtronic, Minneapolis, MN) and the second-generation Lotus valve (Boston Scientific, Natick, MA). BACKGROUND: Aortic regurgitation (AR) following Transcatheter Aortic Valve Replacement (TAVR) confers a worse prognosis and can be accurately quantified using cardiovascular magnetic resonance (CMR). Second generation valves have been specifically designed to reduce paravalvular AR and improve clinical outcomes...
April 25, 2018: Journal of Interventional Cardiology
https://www.readbyqxmd.com/read/29695254/atherosclerosis-t1-weighted-characterization-catch-evaluation-of-the-accuracy-for-identifying-intraplaque-hemorrhage-with-histological-validation-in-carotid-and-coronary-artery-specimens
#13
Wen Liu, Yibin Xie, Chuan Wang, Yanni Du, Christopher Nguyen, Zhenjia Wang, Zhaoyang Fan, Li Dong, Yi Liu, Xiaoming Bi, Jing An, Chengxiong Gu, Wei Yu, Debiao Li
BACKGROUND: Coronary high intensity plaques (CHIPs) detected using cardiovascular magnetic resonance (CMR) coronary atherosclerosis T1-weighted characterization with integrated anatomical reference (CATCH) have been shown to be positively associated with high-risk morphology observed on intracoronary optical coherence tomography (OCT). This study sought to validate whether CHIPs detected on CATCH indicate the presence of intraplaque hemorrhage (IPH) through ex vivo imaging of carotid and coronary plaque specimens, with histopathology as the standard reference...
April 26, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29695249/aortic-flow-patterns-and-wall-shear-stress-maps-by-4d-flow-cardiovascular-magnetic-resonance-in-the-assessment-of-aortic-dilatation-in-bicuspid-aortic-valve-disease
#14
José Fernando Rodríguez-Palomares, Lydia Dux-Santoy, Andrea Guala, Raquel Kale, Giuliana Maldonado, Gisela Teixidó-Turà, Laura Galian, Marina Huguet, Filipa Valente, Laura Gutiérrez, Teresa González-Alujas, Kevin M Johnson, Oliver Wieben, David García-Dorado, Arturo Evangelista
BACKGROUND: In patients with bicuspid valve (BAV), ascending aorta (AAo) dilatation may be caused by altered flow patterns and wall shear stress (WSS). These differences may explain different aortic dilatation morphotypes. Using 4D-flow cardiovascular magnetic resonance (CMR), we aimed to analyze differences in flow patterns and regional axial and circumferential WSS maps between BAV phenotypes and their correlation with ascending aorta dilatation morphotype. METHODS: One hundred and one BAV patients (aortic diameter ≤ 45 mm, no severe valvular disease) and 20 healthy subjects were studied by 4D-flow CMR...
April 26, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29681243/association-between-myocardial-extracellular-volume-and-strain-analysis-through-cardiovascular-magnetic-resonance-with-histological-myocardial-fibrosis-in-patients-awaiting-heart-transplantation
#15
Yue Cui, Yukun Cao, Jing Song, Nianguo Dong, Xiangchuang Kong, Jing Wang, Yating Yuan, Xiaolei Zhu, Xu Yan, Andreas Greiser, Heshui Shi, Ping Han
BACKGROUND: Cardiovascular magnetic resonance (CMR)-derived extracellular volume (ECV) and tissue tracking strain analyses are proposed as non-invasive methods for quantifying myocardial fibrosis and deformation. This study sought (1) to histologically validate myocardial ECV against the collagen volume fraction (CVF) measured from tissue samples of patients undergoing heart transplantation and (2) to detect the correlations between myocardial systolic strain and the myocardial ECV and histological CVF in patients undergoing heart transplantation...
April 23, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29680352/long-term-prognostic-implications-of-previous-silent-myocardial-infarction-in-patients-presenting-with-acute-myocardial-infarction
#16
Raquel P Amier, Martijn W Smulders, Wiesje M van der Flier, Sebastiaan C A M Bekkers, Alwin Zweerink, Cornelis P Allaart, Ahmet Demirkiran, Sebastiaan T Roos, Paul F A Teunissen, Yolande Appelman, Niels van Royen, Raymond J Kim, Albert C van Rossum, Robin Nijveldt
OBJECTIVES: This study investigated the prevalence of silent myocardial infarction (MI) in patients presenting with first acute myocardial infarction (AMI), and its relation with mortality and major adverse cardiovascular events (MACE) at long-term follow-up. BACKGROUND: Up to 54% of MI occurs without apparent symptoms. The prevalence and long-term prognostic implications of previous silent MI in patients presenting with seemingly first AMI are unclear. METHODS: A 2-center observational longitudinal study was performed in 392 patients presenting with first AMI between 2003 and 2013, who underwent late gadolinium enhancement cardiac magnetic resonance (LGE-CMR) examination within 14 days post-AMI...
April 13, 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29680351/the-prognostic-value-of-late-gadolinium-enhanced-cardiac-magnetic-resonance-imaging-in-nonischemic-dilated-cardiomyopathy-a-review-and-meta-analysis
#17
Marthe A J Becker, Jan H Cornel, Peter M van de Ven, Albert C van Rossum, Cornelis P Allaart, Tjeerd Germans
OBJECTIVES: This review and meta-analysis reviews the prognostic value of cardiac magnetic resonance (CMR) in nonischemic dilated cardiomyopathy (DCM). BACKGROUND: Late gadolinium-enhanced (LGE) CMR is a noninvasive method to determine the underlying cause of DCM and previous studies reported the prognostic value of the presence of LGE to identify patients at risk of major adverse cardiovascular events. METHODS: PubMed was searched for studies describing the prognostic implication of LGE in patients with DCM for the specified endpoints cardiovascular mortality, major ventricular arrhythmic events including appropriate implantable cardioverter-defibrillator therapy, rehospitalization for heart failure, and left ventricular reverse remodeling...
April 13, 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29678339/usefulness-of-pulmonary-arterial-end-diastolic-forward-flow-late-after-tetralogy-of-fallot-repair-to-predict-a-restrictive-right-ventricle
#18
Shelby Kutty, Anne Marie Valente, Matthew T White, Kelsey Hickey, David A Danford, Andrew J Powell, Tal Geva
The functional significance of pulmonary arterial end-diastolic forward flow (EDFF) in patients with repaired tetralogy of Fallot (rTOF) is not fully understood, with conflicting reports regarding its associations with pulmonary regurgitation (PR), right ventricular (RV) size and function, and so-called restrictive RV physiology. To examine these associations, we retrospectively analyzed 399 patients with rTOF who had contemporaneous echocardiography (Echo) and cardiovascular magnetic resonance (CMR) studies...
March 7, 2018: American Journal of Cardiology
https://www.readbyqxmd.com/read/29673853/biventricular-dyssynchrony-on-cardiac-magnetic-resonance-imaging-and-its-correlation-with-myocardial-deformation-ventricular-function-and-objective-exercise-capacity-in-patients-with-repaired-tetralogy-of-fallot
#19
Pantelis Kalaitzidis, Stefan Orwat, Aleksander Kempny, Radke Robert, Brigitte Peters, Samir Sarikouch, Philipp Beerbaum, Helmut Baumgartner, Gerhard-Paul Diller
BACKGROUND: Electrical dyssynchrony and prolonged QRS duration are common in patients with repaired tetralogy of Fallot (ToF). It has been linked to increased risk of sudden cardiac death and right ventricular (RV) dysfunction. We investigated myocardial dyssynchrony using cardiac magnetic resonance imaging (CMR) and feature tracking analysis (FT) in this setting and compared it to myocardial deformation, conventional parameters of ventricular dysfunction and clinical parameters. METHODS AND RESULTS: Patients underwent standardized CMR investigations as part of a nationwide study...
April 12, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29669563/a-comparison-of-both-dense-and-feature-tracking-techniques-with-tagging-for-the-cardiovascular-magnetic-resonance-assessment-of-myocardial-strain
#20
J Jane Cao, Nora Ngai, Lynette Duncanson, Joshua Cheng, Kathleen Gliganic, Qizhi Chen
BACKGROUND: Myocardial strain is increasingly recognized as an important assessment for myocardial function. In addition, it also improves outcome prediction. However, there is lack of standardization in strain evaluation by cardiovascular magnetic resonance (CMR). In this study we compared strain values using multiple techniques and multiple vendor products. METHODS: Prospectively recruited patients with cardiomyopathy of diverse etiology (N = 77) and healthy controls (N = 10) underwent CMR on a 1...
April 19, 2018: Journal of Cardiovascular Magnetic Resonance
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