Evaluation of left ventricular diastofic function using velocity vector imaging and quantitative tissue velocity imaging
10.3760/cma.j.issn.0253-3758.2009.11.020
- VernacularTitle:应用速度向量成像及定量组织速度成像技术评价左心室舒张功能
- Author:
Chuan ZHANG
1
;
Dao-Gang ZHA
;
Yi-Li LIU
;
Peng WANG
;
Yu-Qing HOU
;
Jian-Cheng XIU
;
Yue-Gang WANG
;
Zhong-Jiang ZHOU
Author Information
1. 南方医科大学附属南方医院
- Keywords:
Echocardiography;
Ventricular function;
left
- From:
Chinese Journal of Cardiology
2009;37(11):1026-1029
- CountryChina
- Language:Chinese
-
Abstract:
Objective To validate the efficacy of velocity vector imaging (VVI) and quantitative tissue velocity imaging (QTVI) for evaluating left ventricular diastolic function. Methods Fifty-one patients underwent left heart catheterization were included in this study. Mean of peak early diastolic velocity (Em), EF and the ratio of early (E) to late (A) mitral valve flow velocity (E/A) were measured by echocardiography and the ratio of E to Em (E/Em) was calculated. Left ventricular end diastolic pressure (LVEDP) was measured during catheterization examination. Results E/Em derived from VVI or QTVI was significantly correlated with LVEDP(r=0. 808, P<0.01 and r=0.692, P<0.01, respectively) and the correlation coefficient between VVI and LVEDP was significantly higher than that between QTVI and LVEDP (Z=2.246, P=0.025). Em derived from VVI and QTVI also negatively correlated with LVEDP (r= -0.740, P<0.01 and r=-0.567, P<0.01)and the correlation coefficient between VVI and LVEDP was significantly higher than that between QTVI and LVEDP (Z=2.595, P=0.009). However, there was no correlation between E/A and LVEDP (r=0.117, P=0.415). Conclusion E/Em and Em derived from VVI and QTVI are valuable parameters for evaluating LV diastolic function.
