Combs et al reported an equation for estimating fetal weight from sonographic measures that is based on the fetal volume. The authors are from the University of Cincinnati.


(1) abdominal circumference in cm (AC)

(2) head circumference in cm (HC)

(3) femur length in cm (FL)


estimated fetal weight in grams =

= (0.23718 * (AC) * (AC) * (FL)) + (0.03312 * ((HC)^3))

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