Fig. 1

Example of Subendocardial and Subepicardial Segmentation. Rest and stress perfusion images of a transplant recipient showing inferior and anterolateral perfusion defect (white arrows). Basal, mid, and apical short axis slices were acquired (a mid short axis slice was shown as representative). Transmural, subepicardial (bottom) and subendocardial (top) contours were traced. The left ventricular myocardium was segmented into six segments (anterior, anterolateral, inferolateral, inferior, inferoseptal, anteroseptal) with right ventricular insertion point as a reference. Segmental myocardial-time intensity curves at stress (shown on the right) and at rest were measured by the CMR⁴² software