Myocardial Extracellular Volume
نویسندگان
چکیده
منابع مشابه
Myocardial T1 and extracellular volume fraction mapping at 3 tesla
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 Hypertension is associated with the development of myocardial fibrosis with a subsequent increase in the myocardial extracellular volume (ECV). T1 measurements pre and post a contrast cardiac magnetic resonance (CMR) study provide a robust non-invasive method for quantification of the ECV. We aimed to determine whether the CMR-derived ECV can differentiate healthy volunteers from pat...
متن کاملPrevalence 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...
متن کاملMyocardial extracellular volume imaging by CMR quantitatively characterizes myocardial infarction and subclinical myocardial fibrosis
Methods Patients (n=126) were imaged at 1.5T (Siemens) with a Modified Look-Locker Inversion-recovery (MOLLI) sequence before and approximately 15 minutes after a 0.15 mmol/kg bolus of Gd-DTPA. T1 and R1 pixel maps were generated. DeltaR1 maps (R1after R1before contrast) were divided by the DeltaR1 value of the LV blood pool and multiplied by [1hematocrit], yielding a quantitative pixel map of ...
متن کاملMyocardial extracellular volume fraction and myocardial fibrosis by cmr in patients with severe aortic stenosis
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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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 2016
ISSN: 0735-1097
DOI: 10.1016/j.jacc.2015.12.072