Figure 8
From: Regional assessment of left ventricular torsion by CMR tagging
Mean, interpolated rotation (a) and torsion (b) over all 12 healthy subjects. 100% systole is defined as AVC. The remaining parts of the curves (imaged after AVC) are also interpolated over a 100% range, note that this is not the entire diastolic period. The calculated average of base and apex rotation is nearly the same as the measured mid rotation.