摘要
目的分析20~32周胎儿外侧裂在丘脑水平横切面上的超声形态学变化,评估胎儿发育情况。方法选择2022年1月至2024年6月期间于我院规律产检180名孕妇作为研究对象,孕周20~32周,统计不同孕周胎儿大脑外侧裂发育情况(外侧裂深度、外侧裂宽度)。按照外侧裂的发育规律将其分为0~5级,统计不同孕周各个级别例数,统计外侧裂表面积、外侧裂与病理结构的关系、脑室大小、脑沟的发育情况。结果孕周20周,胎儿大脑外侧裂的发育相对平滑,24~32周胎儿大脑外侧裂深度加深,呈现波浪形。胎儿大脑外侧裂发育情况与孕周数呈正相关关系。0级仅出现在20周的1例胎儿;1级(浅弧形)分布在20~24周;2级在20~26周间出现,3级从21~28周都有出现。从29~30周后,大部分胎儿的外侧裂可以达到5级,即外侧裂呈现“工”字形态,岛盖完全覆盖脑岛。随着孕周增加,显示率提高,29~32周显示率达到100.00%。外侧裂的表面积随孕周逐渐增大,从24周的4.0 cm^(2)增长至32周的9.5 cm^(2)。脑室大小呈稳定增加趋势,从24周的7~8 mm增至32周的11~12 mm。结论不同孕周不同级别的外侧裂分布情况显示出一定的规律性,超声形态学观察和分析可准确地了解胎儿大脑外侧裂的发育情况。
Objective To investigate the morphological changes of fetal lateral fissure in transverse section of thalamus at 20~32 weeks,and to evaluate fetal development.Methods A total of 180 pregnant women who underwent regular prenatal check-ups at our hospital from January 2022 to June 2024 were selected as research subjects.The gestational age ranged from 20 to 32 weeks.We analyzed the development of the fetal brain′s lateral sulcus at different gestational weeks,focusing on the depth and width of the sulcus.Based on the development patterns of the lateral sulcus,we classified them into six grades from 0 to 5.We recorded the number of cases for each grade at different gestational weeks and assessed the surface area of the lateral sulcus,the relationship between the sulcus and surrounding anatomical structures,the size of the ventricles,and the development of the sulci.Results At 20 weeks of gestation,the development of the fetal brain′s lateral sulcus was relatively smooth.From 24 to 32 weeks,the depth of the lateral sulcus deepened,exhibiting a wavy pattern.There was a positive correlation between the development of the fetal brain′s lateral sulcus and gestational age.Grade 0 was observed in only one fetus at 20 weeks;Grade 1(shallow arc shape)was present from 20 to 24 weeks.Grade 2 appeared between 20 and 26 weeks,while Grade 3 was noted from 21 to 28 weeks.After 29 to 30 weeks,most fetuses reached Grade 5,where the lateral sulcus presented a"工"shape,with the insula completely covering the island of rReil.The display rate of these features increased with gestational age,reaching 100.00%from 29 to 32 weeks.The surface area of the lateral fissure increased gradually with gestational weeks,from 4.0 cm^(2) at 24 weeks to 9.5 cm^(2) at 32 weeks.Ventricle size increased steadily from 7~8 mm at 24 weeks to 11~12 mm at 32 weeks.Conclusion The distribution of lateral fissure of different levels showed a certain regularity.The observation and analysis of ultrasonic morphology can better understand the development of fetal lateral brain fissure.
作者
马凯
张曾平
李山山
Ma Kai;Zhang Zengping;Li Shanshan(Department of Ultrasound Medicine,Nanyang Central Hospital,Nanyang 473000,China)
出处
《实用医技杂志》
2025年第1期38-42,共5页
Journal of Practical Medical Techniques
关键词
外侧裂
胎儿
丘脑
超声检查
Lateral sulcus
Fetus
Thalamus
Ultrasonography
