早期胚胎结构的超声影像特征及其在胚胎畸形诊断中的价值  

Ultrasound image characteristic of early embryonic structure and its value in fetal defects diagnosis

作　　者：章华[1] 丁言平[1] 徐惠英[1] 凌梅立[1] 

机构地区：[1]同济大学附属第一妇婴保健院超声科,上海200040

出　　处：《同济大学学报（医学版）》2008年第5期125-128,共4页Journal of Tongji University(Medical Science)

摘　　要：目的观察早期胚胎的声像图特征及发展规律,探讨其在早期胚胎畸形诊断中的价值。方法应用经阴道超声观察1 664例早孕胚胎孕周5周0 d-孕周12周6 d胚胎声像图特征及发展规律。结果孕囊着床后,宫内依次出现的胚胎结构是：孕囊、卵黄囊、胚芽及原始心管。胚胎早期中枢神经管头端出现的单脑脑泡和消化系统的中肠疝是过渡性的结构,随着妊娠的发展,这些结构逐渐演变和消退,原始心管搏动范围在100-193次/min。结论掌握早期胚胎结构的胚胎声像图特征及发展规律,可在妊娠早期发现异常,早期诊断胎儿畸形。Objective To study the early embryonic structure＇ s image characteristic and its development rule in ultrasound image and to discuss the value of ultrasound in diagnosis of early fetal defects. Methods One thousand six hundreds and sixty-four fetus of 5 weeks to 12 weeks plus 6 days were observed by transvaginal ultrasound to study the embryonic structure features and fetal development rules. Results After the gestation sac imbeded, the embryonic structure emerged in turn were gestation sac, yolk sac, embryo bud and primordium cardiac tube. The single ventricle and the midgut hermia appered in the early stage at the top of the middle cerebromedullary tube were temporary structure. With the development of the fetus these structures would disappear gradually. The impulse rate of primordium heart was 100 to 193 per minute. Conclusion To master the early embryonic structure image feature and development rules can help to find abnormal embryonic structure in early pregnancy and diagnose embryonic structure defects at early stage.

关 键 词：早期妊娠 胚胎结构 阴道超声 

分 类 号：R445.1[医药卫生—影像医学与核医学]