Results The changes of left ventricular shape and geometry in control group were more obvious than those in treatment group from early phase to 6 months(P<0.05, P<0.01).

Objective To discuss the significance of left ventricular opacification (LVO) for observing the shape and movement of apical anterior and lateral walls.

Select the left and right atria, ventricular end systolic and end diastolic diameter, diameter, diameter change as indicators to determine changes in cardiac shape.