早孕期蜕膜层的超声表现  

Sonographic study of decidua basalis in first trimester of pregnancy

作　　者：李雪晶[1] 张春玲[1] 张蔚[1] 张睿[1] 

机构地区：[1]大庆油田总医院B超室,黑龙江163000

出　　处：《齐齐哈尔医学院学报》2013年第3期409-410,共2页Journal of Qiqihar Medical University

摘　　要：目的总结早孕期蜕膜的超声表现和其变化规律。方法回顾性分析317例早孕期健康孕妇的超声声像图像。观察底蜕膜回声强度和厚度的声像图改变,并分析其与胎龄的相关性。结果一般在妊娠第5～6周可显示清晰蜕膜层高回声,其厚度在第6～7周达到顶峰,第8～9周时厚度不均匀,第10周基本消失,不能被超声识别。它的外观亦随着时间的推移而改变,第5～6周时表现为均匀一致的高回声层,第7周时回声变的不均匀,之后回声逐渐减低,直到变得无法辨认。结论了解早孕期正常蜕膜组织的超声表现,可以使评估早孕期异常妊娠成为可能。Objective To describe the sonographic appearance of the decidua basalis and its changes in the first trimester of pregnancy. Methods We reviewed images from 317 first - trimester ultrasound examinations in women with uncomplicated pregnancies who later delivered at term. The appearance of the decidua basalis layer and the sonographic changes that it underwent, including in echogenicity and thickness, were analyzed with respect to gestational age. Results A distinct decidual layer could be identified consistently at 5 - 6 weeks＂ gestation and its thickness peaked at 6 -7 weeks. It was seen inconsistently at 8 -9 weeks and was not identifiable by 10 weeks. Its appearance changed over time, from a uniformly echogenic layer at 5 -6 weeks to a heterogeneous echogenic layer at 7 weeks. The layer then became less echogenic with time until it became unidentifiable. Conclusions This window in the first trimester may be useful for assessing pregnancies in which there is a deeidual abnormality.

关 键 词：蜕膜组织 早期妊娠 超声检查 

分 类 号：R714.21[医药卫生—妇产科学]