Sohaey R, Woodward P
University of Utah, USA.
Curr Probl Diagn Radiol. 1996 Mar-Apr;25(2):54-75. doi: 10.1016/s0363-0188(96)90013-4.
A wide spectrum of sonographic findings can be seen in the first trimester of pregnancy. One must have an appreciation of embryology to recognize normal and abnormal early pregnancy development. In this article we emphasize discriminatory criteria for identification of normal structures, as well as ultrasound findings in threatened abortion, failing pregnancy, multiple gestations, ectopic pregnancy, and trophoblastic disease. Sonoembryology, the identification of embryonic anatomy, is discussed, as are examples of early identification of anomalies.
在妊娠早期可观察到多种超声检查结果。必须了解胚胎学知识，才能识别正常和异常的早期妊娠发育情况。在本文中，我们重点介绍识别正常结构的鉴别标准，以及先兆流产、妊娠失败、多胎妊娠、异位妊娠和滋养细胞疾病的超声检查结果。文中讨论了超声胚胎学，即胚胎解剖结构的识别，以及早期发现异常的实例。
