Quantification of the area-at-risk by T1 and T2 mapping CMR at 3T
نویسندگان
چکیده
Methods CMR imaging at 3T (Bio-graph mMR, Siemens Healthcare, Erlangen, Germany) was performed in 18 STEMI patients within 10 days of PPCI using T2-mapping and T1-mapping by MOLLI (WIP #699; Siemens Healthcare; UK). Matched short-axis T1 and T2 maps covering the entire left ventricle were analyzed by 2 experienced investigators using 3 analytical methods (in-house macro, ImageJ): manual segmentation, Otsu, and the 2 standard deviation (2SD) thresholding (Fig. 1). Regions-of-interest were drawn in the AAR and remote myocardium. Two investigators analyzed the coronary angiograms to obtain the BARI and APPROACH angiography scores to provide a CMR-independent estimate of the AAR.
منابع مشابه
T1 mapping and T2 mapping at 3T for quantifying the area-at-risk in reperfused STEMI patients
BACKGROUND Whether T1-mapping cardiovascular magnetic resonance (CMR) can accurately quantify the area-at-risk (AAR) as delineated by T2 mapping and assess myocardial salvage at 3T in reperfused ST-segment elevation myocardial infarction (STEMI) patients is not known and was investigated in this study. METHODS 18 STEMI patients underwent CMR at 3T (Siemens Bio-graph mMR) at a median of 5 (4-6...
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