速度向量成像在胎儿超声心动图中的初步应用研究  

Velocity Vector Imaging on Fetal Echocardiography:Initial Application

作　　者：赵博文[1] 姜卫香[1] 杨园[1] 潘美[1] 唐海林[1] 吕江红[1] 汤富刚[1] 

机构地区：[1]浙江大学医学院附属邵逸夫医院超声科浙江大学邵逸夫临床医学研究所,杭州市310016

出　　处：《中国超声医学杂志》2008年第4期355-358,共4页Chinese Journal of Ultrasound in Medicine

基　　金：浙江省科技计划项目(No2003C30041)

摘　　要：目的探讨速度向量成像(velocity vector imaging,VVI)在胎儿超声心动图中应用的方法学及可行性。方法20例胎儿取得标准胎儿四腔心观后,通过AxiusTMVVI工作站处理获得左室四腔心观心内膜VVI图,分别取得左室纵向6个节段的速度图、strain、strainrate及位移等曲线。6个节段间达峰时间(TPK)比较采用t检验。结果所有20例胎儿均获得清晰满意的四腔心左室VVI图,左室6个节段之间的速度、strain、strain rate及位移的TPK比较差异无显著意义(P>0.05)。速度分布呈现明显梯度特点,即从基底段向心尖,速度逐渐减小。VVI尚同时获得任意节段任意时间的速度、strain、strain rate及位移曲线及其三维图。结论VVI技术是新的室壁多方位动力学分析的定量技术,能够提供多种分析工具及获得多个参数,能够用于胎儿左室纵向室壁运动分析。Objective To assess the feasibility of velocity vector imaging （VVI） evaluation of left ventrieular dynamics in the fetuses. Methods Nineteen normal fetuses and 1 fetus with intermittent atrial extrasystoles were studied. The characteristics of VVI maps and multiple parameters of velocities,strain,strain rate and displacement of fetal left ventricles on four-chamber view in 20 fetuses were subsequently analysed using a novel AxiusTM VVI eehoeardiographie workstation. Results VVI examinations were acceptably reproducible in all 20 fetuses, time to peak （TPK） of velocities,strain,strain rate and displacement of 6 segments in LV were compared segment to segment, there were no significant differences among 6 segments. Conclusions Our preliminary investigation has demonstrated VVI evaluation of the fetal heart is feasible and reproducible.

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]