Evaluation of left ventricular global systolic function with two-dimensional speckle tracking of mitral annular displacement
- VernacularTitle:斑点追踪法测量二尖瓣环位移评估左心室收缩功能
- Author:
Weihua WU
;
Yan HUANG
;
Jing LU
;
Songxia WEI
;
Lan MA
;
Xiaoyi XIE
- Publication Type:Journal Article
- Keywords:
Speckle tracking;
Mitral annular displacement;
Ventricular function,left;
Systole
- From:Chinese Journal of Medical Imaging Technology
2010;26(1):79-81
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the preliminary value of mitral annular displacement (MAD) with two-dimensional speckle tracking in evaluating left ventricular systolic function. Methods Forty-nine patients with dilated cardiomyopathy, aged 51±14 years (DCM group), and 43 age-matched (46±14 years) normal subjects (control group) were enrolled in this study. Two-dimensional and real-time three-dimensional (RT3D) imaging were obtained all at the apical four-chamber view. The parameters of MAD and RT3D-LVEF were obtained using off-line QLAB software. Results Compared with control group, MAD reduced significantly in DCM group (P＜0.01). The parameters of MAD correlated positively with LVEF (P＜0.01). The intra- and inter-observer variabilities for measurement of MAD were low. When one point was placed at the chest wall, the ratio of long axis shortening correlated best with LVEF among all the data of MAD. Conclusion Based on two-dimensional speckle tracking imaging, MAD is a rapid and reproducible method of determining LV global systolic function, may even replace LVEF in the future.
