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Figure 3 (A) End-diastolic still frame image in the apical four-chamber view with a semiautomatically drawn left ventricular endocardial contour tracing. (B) Left ventricular wall motion displacement (between end-diastole and end-systole) for 100 endocardial segments determined with the centerline method. (C) Averaged septal (dashed line) and lateral (solid line) wall motion from 40 adjacent septal and lateral segments and three to seven cardiac cycles displayed as displacement (mm) over time (s). The "shift" between the curves indicates the degree of regional dyssynchrony and can be expressed quantitatively by the regional phase angle difference (based on reference 24).
