Figure 4
From: Regional assessment of left ventricular torsion by CMR tagging
(a) Example of the horizontally and vertically tagged images for a healthy volunteer. Left: end-diastole, right: end-systole. Tags do not appear very sharp because they are sinusoidal, which is optimal for the HARP-tracking procedure. (b) Visualization of tracked points using the extended HARP tracking method (18). The red lines represent the myocardial contours, the yellow markers the tracked points.