Regional left ventricular function was quantitatively. assessed by using ″ he mid-point of long axis ″ method. The left ventricle was divided into 36 segments and the area reduction rate in cineangiocardiography was the functional parameter which was available in 67 cases. 用长轴中点法将左室分为36节段,以面积缩小率为节段功能参数,对67例X线左室电影造影图像进行定量左室节段功能测定。