略語大辞典 [Med] 8 FAC fetal abdominal circumference (超音波エコーで測定する)胎児腹部周囲長. FACから胎児の体重を計算する.fetal abdominal circumference; ref. EFW(estimated fetal weight) is calculated from FAC, which is obtained by ultrasound echo measurement; [Med]. 丸善「略語大辞典」JLogosID : 11874468