Assessment of radial movement of left ventricle with velocity vector imaging in patients with dilated cardiomyopathy
10.3760/cma.j.issn.1004-4477.2010.06.007
- VernacularTitle:速度向量成像技术评价扩张型心肌病患者径向室壁运动
- Author:
Wei WANG
;
Zhongwei SHI
;
Houda HU
;
Yan XU
;
Fengru ZHANG
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Cardiomyopathy,dilated;
Ventricular function,left;
Velocity vector imaging
- From:Chinese Journal of Ultrasonography
2010;19(6):480-484
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess the radial systolic function of left ventricle(LV) in patients with dilated cardiomyopathy(DCM) by velocity vector imaging(VVI).Methods Sixteen patients with DCM and twenty control subjects were detected by VVI.VVI data were collected from the six basal segments and six mid segments in parastenal LV short axis views.The radial systolic velocity(V) ,strain(ε) ,strain rate(SR),the time to peak systolic velocity(PTV) and the time to maximum strain(PTε) were measured with special software.The differene of the earliest and the latest time to peak velocity(T-max) and the standard deviation of time to peak velocity(T-SD) of 12 segments were calculated.Results Compared to the controlled group,patients with DCM had significantly lower radial V,ε and SR (P ＜0.01) in all the 12 segments,significantly longer PTV and PTε (P ＜ 0.05) in most segments, and significantly larger T-max and T-SD (P ＜0.05).Conclusions VVI is useful to assess the abnormalities in LV radial movement in patients with DCM and could provide more information about regional cardiac function.
