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Figure 1 Example of Volumetric Determination of RV and LV Ejection Fraction
Endocardial borders are delineated manually for right ventricular (RV) (RVEN, yellow line) and left ventricular (LV) (LVEN, red line) every 8 mm from atrioventricular valve to apex to determine cavity areas at end-systole and -diastole (end-diastole shown here). Consecutive areas are summed by Simpson’s method to calculate end-systolic and -diastolic volumes and calculate ejection fraction. In this example, an RV ejection fraction was measured at 35% and LV ejection fraction at 61%. LVEN = left ventricle endocardial border; LVEP = left ventricle epicardial border; RVEN = right ventricle epicardial border.
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