二维应变超声在冠心病患者左心室扭转中的应用

目的]探讨应用二维应变超声心动图(2DSE)评价冠心病(CHD)患者的左心室旋转和扭转运动的临床价值.方法]应用GE Vivid 7 Dimension超声心动图仪采集35例冠心病患者(冠心病组)及30例正常人(对照组)左心室短轴二尖瓣环及心尖水平切面的二维灰阶图像,计算左心室心尖部和心底部的旋转角度及旋转率、左心...

Two-dimensional strain echocardiography in evaluating left ventricular twist in patients with coronary heart disease

Objective] To evaluate the left ventricular(LV) rotation and twist in patients with coronary heart disease(CHD) using two-dimensional strain echocardiography(2DSE).Methods] Thirty-five patients with CHD and 30 healthy volunteers as control group were enrolled in the study.The two-dimensional images from LV short-axis views at the levels of mitral annulus and apex were obtained from GE Vivid 7 Dimension echocardiography.LV peak rotation and rotation rate of mitral annulus and apex were recorded at both views.LV twist was defined as apical rotation relative to the base.Results] As seen from the apex,the normal LV performed a wringing motion with a clockwise rotation at the base and counterclockwise rotation at the apex.Compared to the control group,global torsion rate was lower in CHD(P<0.05).Conclusion] 2DSE can measure the LV rotation and twist non-invasively,providing a new way for evaluating the LV function in patients with CHD.