Methods The segmental left ventricular wall motion velocity was measured in 45 normal subjects and 48 patients with CAD,and the parameters of QTVI were analyzed between the two groups.

• 方法应用QTVI技术对45例健康者(正常对照组)及48例冠心病组(异常组)进行左室壁各段心肌运动速度检测,并将异常组与对照组进行显著性检验。