Hill L M, Breckle R
Prim Care. 1983 Jun;10(2):205-23.
We have reviewed the current uses of ultrasound in obstetrics. The referring physician must have a clear understanding of the limitations and potential of obstetric ultrasound. The reason for requesting a particular examination should be conveyed to the ultrasonographer. Accurate dating of a particular pregnancy requires an early ultrasonic examination, preferably of the crown-rump length or at least serial BPD measurements so that the growth-adjusted sonographic age can be determined. Placental localization, if the cervical os is encroached upon, is often difficult and may require several scans during the development of the lower uterine segment. The evaluation of fetal growth and assessment of fetal well-being require an in-depth ultrasonic study. A systematic survey of each fetal organ system is necessary to rule out the plethora of anomalies that can now be demonstrated ultrasonically.
我们回顾了超声在产科的当前应用。转诊医生必须清楚了解产科超声的局限性和潜力。请求进行特定检查的原因应告知超声检查人员。准确确定特定妊娠的孕周需要早期超声检查，最好测量头臀长度，或至少进行连续双顶径测量，以便确定经生长调整的超声孕周。如果宫颈内口受到侵犯，胎盘定位往往困难，可能需要在子宫下段发育过程中进行多次扫描。评估胎儿生长和胎儿健康状况需要深入的超声研究。有必要对每个胎儿器官系统进行系统检查，以排除目前可通过超声显示的大量异常情况。
