摘要
目的:了解正常胎儿大脑中动脉(middle cerebral artery,MCA)搏动指数(pulsatility index,PI)、阻力指数(re-sistance index,RI)、收缩期峰值流速与舒张末期流速比值(S/D)的正常参考值范围。方法:应用能量多普勒及脉冲多普勒检测2436例孕16～40周无合并症单胎孕妇,测量胎儿MCA的PI、RI、S/D值并进行分析。结果:胎儿MCA阻力参数指标双侧对比无显著性差异,MCA血流阻力在16～28周时随孕周增加而增高,在孕28～30周时达高峰,孕30周以后随着孕周增加而下降。结论:本文数据可作为正常胎儿MCA血流阻力正常值参考,了解正常胎儿MCA血流阻力在不同孕周的变化规律,对胎儿生长发育的临床监测具有重要意义。
Objective：To establish the normal values of pulsatility index（PI）,resistance index（RI）,and systolic peak velocity/diastolic velocity（S/D） of fetal middle cerebral artery（MCA）.Methods：In 2436 uncomplicated fetuses in gestation ages of 16~40 weeks,MCA were measured with power Doppler and pulsed Doppler.PI,RI,and S/D were measured and analyzed.Results：There were no significant differences between the resistant parameters in the left and right MCA（P〉0.05）.The resistance of MCA increased between 16~28 weeks of gestations,the data increased to the highest in pregnant 28~30 weeks and decreased after 30 weeks.Conclusion：These data from our study may be used as a reference of the normal value for fetal MCA resistance.The patterns of resistance variation in MCA in normal fetuses is valuable in monitoring the growth of fetuses.
出处
《医学影像学杂志》
2011年第6期811-813,共3页
Journal of Medical Imaging
关键词
能量多普勒
胎儿
大脑中动脉
血管阻力
参考值
Power Doppler flowing imaging
Fetus
Middle cerebral artery
Vascular resistance
Reference values
