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Figure 2 Relationship Between LV Circumferential Strain and Net Ventricular Twist

Peak end-systolic circumferential strain (x-axis) was averaged from basal, mid, and apical short-axis views for 3 consecutive heartbeats. Rotations in either the basal or apical short-axis planes were expressed as average angular displacements of 6 myocardial segments along the central axis. Net left ventricular (LV) twist (y-axis) was calculated as the net difference between LV peak rotation angles obtained from the basal and apical short-axis planes and averaged over 3 consecutive heartbeats. On combining the data from the 3 groups (CP, RCM, and CON), a good correlation was seen between peak circumferential shortening strains and peak net ventricular twist. Abbreviations as in Figure 1.