Hill L M, Breckle R, Wolfgram K R, O'Brien P C
J Clin Ultrasound. 1986 Mar-Apr;14(3):171-8. doi: 10.1002/jcu.1870140303.
Three ultrasonic methods for estimating fetal weight (Campbell, Warsof, and Shepard) were compared in 124 singleton pregnancies. Fetal abdominal circumference was obtained by use of a map measurer and from diameter measurements and the equation for the circumference of a circle. Campbell's formula for estimating fetal weight was superior between 2,000 and 4,000 g, whereas Shepard's method was slightly better below 2,000 g and over 4,000 g. Hence, varied fetal anthropometric characteristics make it mandatory that several methods be evaluated by each institution before one is selected. With the methods of Campbell and Shepard, use of diameter measurements and the equation for the circumference of a circle resulted in a more accurate estimated fetal weight than when a map measurer was used.
在124例单胎妊娠中，对三种超声估测胎儿体重的方法（坎贝尔法、沃索夫法和谢泼德法）进行了比较。胎儿腹围通过使用地图测量仪、直径测量以及圆周长公式获得。坎贝尔估测胎儿体重的公式在2000至4000克之间表现更优，而谢泼德法在2000克以下和4000克以上时略胜一筹。因此，胎儿不同的人体测量特征使得每个机构在选择一种方法之前必须对多种方法进行评估。使用坎贝尔法和谢泼德法时，采用直径测量和圆周长公式得出的胎儿体重估计值比使用地图测量仪时更准确。
