Myocardial strain analysis in patients with Heart Failure with preserved Ejection Fraction using bright blood cine MR images: A comparison with speckle-tracking echocardiography
نویسندگان
چکیده
Background Changes in myocardial strain parameters is of interest in patients with heart failure as an objective measure of disease severity. Speckle-tracking echocardiography (STecho) is the accepted standard of reference for myocardial strain analysis given superior temporal resolution; however, difficult acoustic windows and limited contrast to noise resolution can limit strain analysis. Preliminary work using deformation field analysis at steady state free precession (SSFP) cine MR imaging has shown that strain analysis at CMR is similar between conventional and highly accelerated GRAPPA cine acquisitions. The purpose of this study is to compare the strain values in patients with heart failure and preserved ejection fraction (HFpEF, left ventricular ejection fraction >50%) at SSFP cine MRI with ST-echo.
منابع مشابه
Comparisons of myocardial strain and strain rate in patients with heart failure with preserved and reduced ejection fraction using Feature Tracking of cine MR images
Methods All participants were prospectively recruited and underwent CMR in a 1.5 T scanner. LVEF < 45% and ≥45% were used to define HFrEF and HFpEF, respectively. Dilated cardiomyopathy was the primary cause for HFrEF. HF status was confirmed with B-type natriuretic peptide (BNP) > 400 pg/ml. Patients with myocardial infarction were excluded. Myocardial circumferential strain (CST) and strain r...
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