Fig. 3
From: T1 mapping and T2 mapping at 3T for quantifying the area-at-risk in reperfused STEMI patients
Performance of three different thresholding techniques for delineating the AAR on T1 and T2 maps. The AAR by the 2 standard deviation (2SD) technique was significantly larger than that delineated by the manual and Otsu thresholding techniques. There was no difference between the manual and Otsu techniques for both T1 and T2 mapping in delineating the AAR. *denotes significant statistical difference with P < 0.001