Two-dimensional strain echocardiography in evaluation of left ventricular twist with normal ventricular wall motion

VernacularTitle:二维应变超声评价室壁运动正常的冠状动脉性心脏病患者的左心室扭转运动
Author: Yanhua SHEN ; Yunhua GAO ; Sheng HE ; Ye YANG ; Xin LI ; Yunshan ZHANG
Publication Type:Journal Article
Keywords: Heart ventricles; Two-dimensional strain; Echocardiography; Speckle tracking imaging
From: Chinese Journal of Medical Imaging Technology 2009;25(7):1186-1188
CountryChina
Language:Chinese
Abstract: Objective To evaluate the left ventricular twist in patients with coronary heart disease (CHD) with two-dimensional strain echocardiography (2DSE). Methods Thirty-eight patients with CHD and 31 control subjects proved with selected coronary angiography were enrolled. Two-dimensional images from LV short-axis views at the levels of mitral annulus and apex in 3 continuous cardiac cycles were recorded. LV ejection fraction (LVEF) was calculated with bi-plane Simpson's method, torsion and torsional rate were obtained in each plane, and the corresponding curve was accessed. Results No statistical difference of conventional echocardiographic parameters such as LV diameter, left atria diameter, LVEF, FS, E/A and E-wave deceleration time were detected, while significant difference of torsional direction (P＜0.01) and global torsion rate (P＜0.05) were found between the two groups. Conclusion The global torsional rate and torsional direction have higher sensitivity than conventional echocardiography in the diagnosis of CHD.