二维应变成像评价双胎输血综合征受血儿右心功能的初步研究  

Assessment of right ventricular function in recipient fetus of twin-twin transfusion syndrome with twodimensional strain imaging

作　　者：赵胜[1] 邓又斌[1] 陈欣林[2] 刘蓉[2] 

机构地区：[1]华中科技大学同济医学院附属同济医院超声影像科,武汉430030 [2]湖北省妇幼保健院超声科

出　　处：《中华超声影像学杂志》2011年第5期423-426,共4页Chinese Journal of Ultrasonography

摘　　要：目的探讨二维应变成像在评价双胎输血综合征（twin—twin transfusion syndrome，TTTS）受血儿右心功能中的价值。方法选择TTTS16例及正常单绒毛膜囊双羊膜囊双胎19例，分别测量两个胎儿脐动脉、脐静脉、静脉导管、大脑中动脉、房室瓣口、半月瓣口等部位的血流频谱参数，计算心肌做功指数。然后局部放大胎儿四腔心，清晰显示心内膜及肌层．动态存储2～3个心动周期，脱机分析两组胎儿右心纵向收缩期峰值应变。结果TTTS受血儿心胸面积比值、右心心肌做功指数大于供血儿及对照组，差异有统计学意义；TTTS受血儿右心游离壁、室间隔及平均纵向收缩期峰值应变小于供血儿及对照组，差异有统计学意义。结论二维应变成像可反映TTTS受血儿的右心心肌运动异常，但是在羊水过多及胎动频繁时应用受到限制。Objective To evaluate the value of two-dimensional strain imaging in assessing right ventricular function of recipient fetus in TTTS pregnancies. Methods Sixteen TTTS pregnancies and 19 normal monochorionic diamniotic pregnancies （controls） were included. Doppler studies of the umbilical artery, umbilical vein, ductus venosus, middle cerebral artery, atrioventricular valve and semilunar value were recorded in both fetus, and myocardial performance index of both ventricles was calculated. Longitudinal peak systolic strain of right ventricular were calculated and compared between recipient fetus and other fetus. Results Cardiothoraeic ratio and myocardial performance index of right ventricular showed significant differences between recipient fetus and controls. Right ventricular strain was decreased in recipient fetus compared with controls. Conclusions Two-dimensional strain imaging can be used to evaluate right ventricular myocardial function in the recipient fetus of TTTS.

关 键 词：超声检查 产前 双胎输血综合征 二维应变 心室功能 右 

分 类 号：R445.1[医药卫生—影像医学与核医学]