Study on cardiac torsional deformation in patients with dilated cardiomyopathy by velocity vector imaging
- VernacularTitle:速度向量成像技术对扩张型心肌病心脏扭转运动的研究
- Author:
Guohui YAN
;
Guang ZHI
;
Yong XU
;
Xiao ZHOU
;
Saijun HOU
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Cardiomyopathy,dilated;
Ventricular function,left;
Torsion;
Velocity vector imaging
- From:
Chinese Journal of Ultrasonography
2008;17(5):378-380
- CountryChina
- Language:Chinese
-
Abstract:
Objective To characterize the systolic torsion in dilated cardiomyopathy (DCM) by velocity vector imaging(VVI).Methods Eighty-seven subjects were studied using VVI:27 patients with DCM and 60 healthy control subjects.Left ventricular short-axis acoustic images were acquired at base and apex levels.The rotation angle and rotation velocity of endocardium and epicardium were measured.Results LVEF of DCM group was significantly lower than that of control group ( P＜0.01).The basal and apical rotation angle, rotation velocity were significantly lower in DCM group.The endocardial and epicardial rotation angle, rotation velocity were also significantly lower in DCM group than those in control group (P＜0.01).Conclusions VVI is a rapid and noninvasive tool to quantitatively assess cardiac torsional deformation in DCM patients,which providing another useful modality for evaluating cardiac function.
