Application of real-time Bi-Plane in measurement of normal fetal mitral annular area

VernacularTitle:实时双平面成像技术测量正常胎儿二尖瓣环面积的应用
Author: Xue SUN ; Ying ZHANG
Keywords: Bi-Plane technique; Ultrasonography,prental; Fetus; Heart; Mitral valve
From: Chinese Journal of Interventional Imaging and Therapy 2017;14(8):476-479
CountryChina
Language:Chinese
Abstract: Objective To assess the feasibility of real-time Bi-Plane in observing normal mitral annular areas in different gestational ages.Methods Routine two-dimensional echocardiography and real-time Bi-Plane were used to observe mitral structure and measure the mitral annular area in 159 fetuses.Pearson correlation analysis was used to evaluate the correlation of the areas with gestational age.Visualization rates and acquisition time were recorded and analyzed statistically.Resuits The mitral annular areas measured by two techniques were both correlated to the gestational age (r=0.71,0.75,both P＜0.05).There were significant differences in visualization rate (x2 =4.375,P=0.036) of mitral annular area and acquisition time (t=6.11,P＜0.05) between routine two-dimensional echocardiography and real-time Bi-Plane.Conclusion Real-time Bi-Plane technique is direct,accurate,convenient and fast in observing mitral prenatally.By using Bi-Plane technique to measure mitral annular area,abnormal morphology changes of mitral valve can be evaluated,so as to provide great application value for clinic.