正常中晚孕胎儿侧脑室大小随胎龄变化的初步探讨  

Preliminary study on the size-changing lateral cerebral ventricle in second-third trimester normal pregnancy with gestational age

作　　者：曾旭[1] 周芷溪 董国礼[2] 许林[1] 王晓红[1] 赵春刚[1] 

机构地区：[1]达州市中心医院,四川达州635000 [2]川北医学院附属医院

出　　处：《实用放射学杂志》2014年第6期983-986,共4页Journal of Practical Radiology

基　　金：四川省卫生厅科研项目（120420）.

摘　　要：目的：探讨正常中晚孕胎儿磁共振成像上侧脑室大小随胎龄增长变化的规律,为临床监测胎儿发育提供参考。方法回顾分析正常的中晚孕胎儿98例的 MRI 资料；按不同胎龄大小分成6组（单位：周）,即18-21、22-25、26-29、30-33、34-37、38-40。测量各组胎儿侧脑室前角、后角的横径最大值（cm）,计数并进行统计学分析。结果不同胎龄组侧脑室前角横径分别为0.35±0.03,0.33±0.05,0.31±0.04,0.30±0.03,0.26±0.05,0.25±0.04；侧脑室后角横径分别为0.91±0.09,0.84±0.09,0.84±0.11,0.81±0.13,0.80±0.11,0.74±0.13。经方差分析显示,各胎龄组间侧脑室前角间、侧脑室后角部分组间差异有统计学意义（P 〈0.05）,侧脑室前角、侧脑室后角宽度随胎龄增长逐渐缩小。结论正常中晚孕胎儿侧脑室前角、侧脑室后角大小随胎龄增长逐渐缩小。Objective To explore the growing change of sizes of lateral cerebral ventricle in second-third trimester normal fetuses in MRI,to provide the normal reference for clinical monitoring.Methods MRI findings in 98 normal second-third trimester fetuses were retrospectively analyzed.The fetuses were divided into 6 groups according to gestational age （unit：week）including 18-21,22-25,26-29,30-33,34-37 and 38-40 weeks,respectively.The maximum transverse sizes of fetal atrium and occipital horns of lateral ventricle （cm）were measured.The SigmaStat statistical program was used for statistical analysis.Results The length of lateral ventricle atrium horn in 6 groups were 0.35 ± 0.03,0.33 ± 0.05,0.31 ± 0.04,0.30 ± 0.03,0.26 ± 0.05 and 0.25 ± 0.04,respectively,and the ventricle length of occipital horns were 0.91± 0.09,0.84 ± 0.09,0.84 ± 0.1 1,0.81 ± 0.13,0.80 ± 0.1 1 and 0.74 ± 0.13,respectively.The length of lateral ventricle atrium horn and ventricle occipital horns among some different groups showed significant differences （P 〈0.05）.The length of fetal ventricle atrium and occipital horn were reduced gradually with gestational ages.Conclusion The ventricular length of atrium and occipital horn in second-third trimester normal fetuses reduce gradually with gestational ages.

关 键 词：胎儿 侧脑室大小 磁共振成像 

分 类 号：R714.5[医药卫生—妇产科学] R445.2[医药卫生—临床医学]