Synthetic Myocardial Extracellular Volume Fraction
نویسندگان
چکیده
منابع مشابه
Prevalence of increased myocardial extracellular volume fraction in dilated cardiomyopathy
Background Extracellular volume fraction cardiac magnetic resonance (ECV-CMR) enables quantitative myocardial tissue characterization. Increased myocardial ECV is correlated to myocardial fibrosis, inversely related to the left ventricle ejection fraction (LVEF), and an independent predictor of mortality. Dilated cardiomyopathy (DCM) is characterized by decreased LVEF and increased LV end-diast...
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BACKGROUND To compare 11 heartbeat (HB) and 17 HB modified lock locker inversion recovery (MOLLI) pulse sequence at 3T and to establish preliminary reference values for myocardial T1 and the extracellular volume fraction (ECV). METHODS Both phantoms and normal volunteers were scanned at 3T using 11 HB and 17 HB MOLLI sequence with the following parameters: spatial resolution = 1.75 × 1.75 × 1...
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Background Severe aortic stenosis (AS) induces diffuse interstitial myocardial fibrosis (MF). CMR late gadolinium enhancement (LGE) technique is useful to detect focal MF. The amount of MF is associated with worse long-term prognosis after aortic valve replacement surgery (AVR). Measurements of T1 relaxation times before and after gadolinium administration allow determination of myocardial extr...
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Background Non-ischemic cardiomyopathy (NICM) is a common cause of left ventricular (LV) dysfunction and may be associated with myocardial fibrosis. Global LV systolic function may underestimate the impact of fibrosis on myocardial function and is insensitive to regional abnormalities in myocardial motion. Advances in cardiac MRI have enabled quantification of myocardial fibrosis through the ca...
متن کاملExtracellular volume fraction measured by MOLLI: slow infusion versus bolus
Background Myocardial extracellular volume fraction (Ve) measures from myocardial and blood pool T1 data quantify diffuse fibrosis (Flett, 2010) not detectable by conventional late gadolinium (Gd) enhancement, but require steady state equilibrium between plasma and interstitium. While a bolus with a lengthy infusion produces steady state for Ve measures, it is unclear whether a Gd contrast bolu...
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ژورنال
عنوان ژورنال: JACC: Cardiovascular Imaging
سال: 2017
ISSN: 1936-878X
DOI: 10.1016/j.jcmg.2016.12.007