速度向量成像技术对正常胎儿左室心肌纵向运动功能的分析  

Evaluation of Left Ventricular Myocardial Longitudinal Function in Normal Fetus by Velocity Vector Imaging

作　　者：张雪梅[1] 李锐[1] 郭燕丽[1] 张晓航[1] 段灵敏[1] 薛雅方[1] 唐春霖[1] 

机构地区：[1]解放军第三军医大学西南医院超声科,重庆市400038

出　　处：《中国超声医学杂志》2011年第5期454-457,共4页Chinese Journal of Ultrasound in Medicine

基　　金：国家科技支撑计划(No.2006BA105A04)

摘　　要：目的探讨速度向量成像技术分析正常胎儿左室纵向心肌运动功能的方法,分析正常胎儿左室纵向心肌运动的特征。方法采用sequeia 512超声诊断仪,在速度向量成像技术模式下对50例正常胎儿心脏取标准四腔心切面,分析左室侧壁及室间隔基底段、中间段、心尖段节段心肌运动速度、应变及应变率。结果 50例胎儿中45例成功获得速度向量成像技术图像,速度向量成像技术获得左室6个节段心肌任意时间的运动速度、应变及应变率彩色图、曲线及三维图像。左室6个节段心肌运动速度由基底段向心尖段呈递减趋势,心肌应变及应变率无基底段向心尖段递减的分布趋势。结论速度向量成像技术无角度依赖性,是分析胎儿心肌运动的新技术,可测量节段心肌运动速度、应变及应变率,可用于胎儿心脏左室纵向心肌运动的分析。Objective To evaluate the left ventricular myocardial longitudinal function in normal fetus by velocity vector imaging （VVI）. Methods The standard four-chamber views in 50 normal fetus were collected using VVI mode. The regional tissue velocity, strain, and strain rate of the interventricular septum and left lateral wall were measured using VVI sofeware. Results Left ventriculor myocardial longitudinal funtion in 45 Fetus were evaluated by, Tissue velocity decreased gradually from the basal segment to the apical segment, strain and strain rate were no significant differences among 6 segments. Conclusions VVI was a new technique for analysing myocardial function, left ventricular myocardial longitudinal function can be evaluated in normal fetus.

关 键 词：胎儿心脏 速度向量成像 超声心动描记术 

分 类 号：R445.1[医药卫生—影像医学与核医学] R714.5[医药卫生—诊断学]