三维超声测量胎儿脑干-小脑蚓部夹角和脑干-小脑幕夹角的方法及在巨枕大池中的应用  

Fetal brainstem-vermis angle and brainstem-tentorium angle measured with three-dimensional uitrasonography and its application in mega cisterna magna

作　　者：李燕茹[1] 苏珊珊[1] 吕国荣[2] 黄婷婷[1] 

机构地区：[1]福建医科大学附属第二医院超声科,泉州362000 [2]泉州医学高等专科学校临床医学部

出　　处：《中华超声影像学杂志》2015年第5期412-416,共5页Chinese Journal of Ultrasonography

基　　金：泉州市优秀人才培养专项经费（10A12）;2014年泉州市技术研究与开发项目（Z[2014]0113）

摘　　要：目的建立不同孕周正常胎儿脑干-小脑蚓部夹角（BVA）和脑干-小脑幕夹角（BTA）的正常参考值范围，并评估其在巨枕大池诊断中的临床价值。方法采用三维超声容积对比成像（VCI）技术测量320例18-40孕周正常单胎胎儿BVA和BTA，分析其与孕周的关系，并按照上述测值方法对24例巨枕大池胎儿进行评估。结果①正常胎儿BVA和BTA与孕周不存在相关关系（r=-0．05、0．04，P均〉0．05），其正常参考值范围分别为2．23°-19．30°、18．53°-48．13°；②24例巨枕大池胎儿，其BVA和BTA分别为4．23°-17．42°、20．41°-40．89°，与正常胎儿无差异（t=-0．55、0．92，P均〉0．05）。结论运用三维超声VCI技术测量胎儿BVA和BTA的方法是可行的，可作为国内BVA、BTA测值参考标准。Objective To establish the ranges of normal reference values of fetal brainstem-vermis angle （BVA） and brainstem-tentorium angle （BTA） in normal fetuses at different gestational weeks,and to evaluate their clinical values in the diagnosis of mega cisterna magna. Methods Totally 320 normal singleton fetuses between 18 and 40 weeks of gestation were enrolled in this study. Three-dimensional ultrasound （3DUS） with volume contrast imaging （VCI） was used to measure their BVA and BTA, the correlations of BVA and BTA with gestational age were analyzed. The BVA and BTA of 24 fetuses with mega cisterna magna were also measured and were compared with those of the normal fetuses. Results In these normal fetuses, the BVA and BTA showed no correlations with gestational age （ r = - 0.05,0.04, both P 〉 0.05） ; the ranges of normal reference values of BVA and BTA were 2.23 ° - 19.30° and 18.53 ° - 48.13°, respectively. The BVA and BTA of 24 fetuses with mega cisterna magna were 4.23° - 17.42° and 20.41° - 40.89°, respectively,which were not significantly different from those of normal fetuses （ t = -0.55,0.92, both P 〉0.05）. Conclusions 3DUS with VCI is feasible for measuring the BVA and BTA of fetuses,and the measured values can be used as the reference standards for BVA and BTA measurement in China. [Key words]

关 键 词：超声检查 三维 胎儿 脑干一小脑蚓部夹角 脑干一小脑幕夹角 巨枕大池 

分 类 号：R714.5[医药卫生—妇产科学] R445.1[医药卫生—临床医学]