Evaluation of regional left ventricular longitudinal function in 151 normal fetuses using velocity vector imaging
- VernacularTitle:速度向量成像技术检测胎儿心肌节段功能的临床研究
- Author:
Qinghai PENG
;
Qichang ZHOU
;
Shi ZENG
;
Leiqi TIAN
;
Ming ZHANG
;
Yi TAN
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Fetus;
Ventricular function,left
- From:
Chinese Journal of Ultrasonography
2008;17(5):397-401
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the clinical value of VVI assessment normal fetal segmental myocardial performance and to establish a nomogram of normal fetus.Methods Digital dynamic fourchamber imaging of 151 healthy fetus(divided 5 groups according to gestation)were collected,then the longitudinal velocity,strain and strain rate of interventricular septal and left lateral wall were measured in systolic and diastolic period respectively.Results Normal systolic and diastolic values for tissue velocitv.strain,and strain rate were established.Tissue velocity was age dependent,whereas strain and strain rate were stable throughout gestation(P＞0.05).Tissue velocity was gradually decreased from the base segment to the apical segment(P＜0.01),whereas strain and strain rate were stable among all segments in every group(P＞0.05).Conclusions Fetal myocardial velocity,strain,and strain rate measuraments are easy to obtain and reproducible,VVI is a novel noninvasive tool to assess quantitatively and objectivelv regional systolic and diastolic function in fetal heart,it is providing another useful modality for evaluating cardiac function.
