在妊娠的管理中了解胎儿生长发育和体重很重要。本研究目的是用超声测量胎儿双顶径、腹径和股骨长度(FL)推算出胎儿体重的公式,以估算胎儿体重增长的正常范围。作者对89名孕妇分成不同组,在分娩或流产前48小时内进行超声胎儿测量,平均体重为2,723g(33～5,070g)。用所提出的 It is important to understand fetal growth and weight during pregnancy management. The purpose of this study was to extrapolate fetal biparietal diameter, abdominal diameter and femoral length (FL) to calculate the formula of fetal weight to estimate the normal range of fetal weight gain. The 89 pregnant women were divided into different groups and performed fetal ultrasound measurements within 48 hours before delivery or abortion with an average body weight of 2,723 g (33 to 5,070 g). With the proposed