Figure 2
Schematics of the ROIs for myocardial structural analysis. ROIs include (a) mid septal wall, (b) anterior, (c) lateral, and (d) posterior free wall of the left ventricle. The same ROIs are defined for 3 consecutive image slices at the left ventricular equatorial plane, and myocardial structural parameters are sampled transmurally along radial paths separated by 1.5, for a total of 33 trajectories for each circumferential location for each heart.