نتایج جستجو برای: حرکتی cmr
تعداد نتایج: 14132 فیلتر نتایج به سال:
Abstract Background Repaired tetralogy of Fallot patients develops postoperative complications that are in need for follow-up and re-intervention some circumstances. CMR myocardial feature tracking is a novel method allows quantification bi-atrial bi-ventricular mechanics deformation. So our aim to assess the added value cardiac magnetic resonance imaging its advanced analysis evaluation repair...
BACKGROUND Left ventricular hypertrophy (LVH) typically manifests during or after adolescence in sarcomere mutation carriers at risk for developing hypertrophic cardiomyopathy. Guidelines recommend serial imaging of mutation carriers without LVH (G+/LVH-) to monitor for phenotypic evolution, but the optimal strategy is undefined. Compared with echocardiography (echo), cardiac MRI (CMR) offers i...
Background Mitral regurgitation (MR) is clinically important for patients with prosthetic mitral valves (PMV). While CMR can quantify MR based on flow, this requires dedicated imaging. Cine-CMR (SSFP) provides an alternative approach, whereby MR can be graded based on regurgitation-associated intervoxel dephasing. As cine-CMR is a standard component of nearly all exams, it could be used to scre...
Background Adenosine stress perfusion CMR is commonly used for assessing coronary artery disease (CAD) in adults. CAD is uncommon in children, but does occur. There is limited experience performing adenosine stress perfusion CMR in young children. Performing stress perfusion CMR in young children presents a number of technical imaging challenges. Specific Aim: Evaluate image quality and optimal...
Myocardial perfusion and wall motion assessment by CMR for detection of CAD. Contrast media (CM) first-pass techniques are the most commonly used approaches for perfusion-CMR. Alternatively, blood oxygen level dependent (BOLD) techniques and spin-labeling techniques have also been applied to measure myocardial perfusion, but are still in an early experimental stage. As an alternative for perfus...
Morphological and functional parameters such as chamber size and function, aortic diameters and distensibility, flow and T1 and T2* relaxation time can be assessed and quantified by cardiovascular magnetic resonance (CMR). Knowledge of normal values for quantitative CMR is crucial to interpretation of results and to distinguish normal from disease. In this review, we present normal reference va...
BACKGROUND Imaging has become a routine part of heart failure (HF) investigation. Echocardiography is a first-line test in HF given its availability and it provides valuable diagnostic and prognostic information. Cardiac magnetic resonance (CMR) is an emerging clinical tool in the management of patients with non-ischemic heart failure. Current ACC/AHA/CCS/ESC guidelines advocate its role in the...
Background Stress cardiac magnetic resonance with adenosine (CMR-A) is a valid test to rule out myocardial ischaemia. We follow-up a cohort of patients with CMR-A due to suspected myocardial ischaemia, considering patients with very high cardiovascular risk. Methods We included all patients with CMR-A between June 2009 and November 2012, considering two groups: those with a very high cardiovasc...
OBJECTIVES This study sought to develop and validate a method for the integrated analysis of systolic and diastolic ventricular function. BACKGROUND An integrated approach to assess ventricular pump function, myocontractility (end-systolic pressure-volume relationship [ESPVR]), and diastolic compliance (end-diastolic pressure-volume relation [EDPVR]) is of high clinical value. Cardiac magneti...
BACKGROUND Perfusion cardiovascular magnetic resonance (CMR) and fractional flow reserve (FFR) are emerging as the most accurate tools for the assessment of myocardial ischemia noninvasively or in the catheter laboratory. However, there is limited data comparing CMR and FFR in patients with multi-vessel disease. This study aims to evaluate the correlation between myocardial ischemia detected by...
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