Peek M J, Devonald K J, Beilby R, Ellwood D
King George V Hospital for Mothers and Babies, Sydney.
Aust N Z J Obstet Gynaecol. 1994 May;34(2):140-3. doi: 10.1111/j.1479-828x.1994.tb02676.x.
The value of routine antenatal booking ultrasound as an adjunct to, or as an alternative to the 18 to 20 week ultrasound, is not known. A study into the possible benefits of routine antenatal booking ultrasound was undertaken. One year's experience, involving 1,372 scans is described. The main medical benefits include the establishment or correction of gestational age (41.7% of all pregnancies) and the identification of multiple pregnancies (0.7%), nonviable pregnancies (1.4%) and other pregnancies requiring specialist antenatal clinic referral (0.7%), resulting in a total of 44.5% of patients in whom some benefit was obtained.
常规产前预约超声作为18至20周超声的辅助手段或替代手段的价值尚不清楚。开展了一项关于常规产前预约超声可能益处的研究。描述了涉及1372次扫描的一年经验。主要医学益处包括确定或校正孕周（占所有妊娠的41.7%）以及识别多胎妊娠（0.7%）、不可行妊娠（1.4%）和其他需要转诊至产前专科门诊的妊娠（0.7%），总计44.5%的患者从中获得了某些益处。
