| 路涛,张凤,吴成倩,刘霞,李自军,柴丽,杜雨桔,罗强,李缃绮.妊娠中晚期正常胎儿颅后窝生长发育规律[J].中国医学影像技术,2022,38(7):1041~1044 |
| 妊娠中晚期正常胎儿颅后窝生长发育规律 |
| Development of posterior cranial fossa of normal fetus in the second and third trimesters of pregnancy |
| 投稿时间：2021-12-10 修订日期：2022-03-10 |
| DOI：10.13929/j.issn.1003-3289.2022.07.018 |
| 中文关键词: 胎儿 颅窝,后 小脑 磁共振成像 |
| 英文关键词:fetus cranial fossa,posterior cerebellum magnetic resonance imaging |
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| 中文摘要: |
| 目的 观察妊娠中晚期正常胎儿颅后窝的生长发育规律。方法 回顾性纳入493胎妊娠25~36周正常胎儿,于图像存储与传输系统(PACS)工作站测量其MRI所示小脑横径及体积、颅后窝宽度及体积,并计算小脑体积/颅后窝体积,分析颅后窝随孕周变化的规律。结果 正常胎儿小脑横径与孕周呈直线相关,直线方程为y=－21.15+1.90x(R2=0.85,P＜0.01);小脑体积随孕周增加呈指数增长,曲线方程为y=150.52e(0.13x)(R2=0.73,P＜0.01)。胎儿颅后窝宽度与孕周无明显相关(R2＜0.01,P=0.30),而颅后窝体积及小脑体积/颅后窝体积均随孕周增加而呈指数增长,曲线方程分别为y=1 098.50e(0.10x)(R2=0.60,P＜0.01)及y=0.14e(0.04x)(R2=0.30,P＜0.01)。结论 妊娠中晚期正常胎儿小脑及颅后窝体积均随孕周增加而呈指数增长,且小脑生长速度快于颅后窝。 |
| 英文摘要: |
| Objective To observe the development of posterior cranial fossa of normal fetus in the second and third trimesters of pregnancy. Methods Data of 493 normal fetuses at 25—36 weeks were retrospectively enrolled. The transverse diameter and volume of cerebellum, as well as the width and volume of posterior cranial fossa showed on MRI were measured at the picture archiving and communications system (PACS) workstation, and the cerebellar volume/posterior cranial fossa volume was calculated. The changes of posterior cranial fossa with gestational weeks were analyzed. Results The transverse diameter of fetal cerebellum was linearly correlated with gestational weeks, which could be described with a linear equation of y=－21.15+1.90x (R2=0.85, P＜0.01), and the cerebellar volume increased exponentially with the increasing of gestational weeks, which could be described with a curve equation of y=150.52e(0.13x) (R2=0.73, P＜0.01). There was no significant correlation between the width of posterior cranial fossa and gestational weeks (R2＜0.01, P=0.30), while the volume of posterior cranial fossa and cerebellar volume/posterior cranial fossa volume both increased exponentially with the increasing of gestational weeks, which could be described with a curve equation of y=1 098.50e(0.10x) (R2=0.60, P＜0.01) and y=0.14e(0.04x) (R2=0.30, P＜0.01), respectively. Conclusion The volume of cerebellum and posterior cranial fossa of normal fetus in the second and third trimesters of pregnancy increased exponentially with the increasing of gestational weeks, and the growth rate of cerebellum was faster than that of posterior cranial fossa. |
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