van Dam P A, Vanderheyden J S, Uyttenbroeck F
Department of Obstetrics and Gynecology, St. Augustinus Hospital, University of Antwerp, Wilrijk, Belgium.
J Clin Ultrasound. 1988 Mar-Apr;16(3):159-65. doi: 10.1002/jcu.1870160303.
The world literature between 1979 and 1984 has been reviewed in regard to the use of ultrasound in the diagnosis of heterotopic pregnancy. Although ultrasonography is helpful in detecting the intrauterine pregnancy, it is far less accurate for diagnosing the associated ectopic pregnancy. A clear-cut ultrasonographic diagnosis prior to surgical intervention could be made in only 4 of 29 cases (14%), where viable intra- and extrauterine fetuses were observed.
对1979年至1984年间世界文献中关于超声在异位妊娠诊断中的应用进行了综述。尽管超声检查有助于检测宫内妊娠，但对于诊断相关的异位妊娠准确性要低得多。在29例同时观察到宫内和宫外存活胎儿的病例中，只有4例（14%）在手术干预前能够通过超声做出明确诊断。
