Halsaka et al reported an equation for predicting birth weight of a term fetus using sonographic measurements. The authors are from the 2nd Medical Faculty of the Charles University in Prague.

Patient selection: healthy term pregnancy



(1) biparietal diameter in cm (BPD)

(2) abdominal circumference in cm (AC)

(3) femur length in cm (FL)


value of X =

= (0.64041 * (BPD)) - (0.03257 * ((BPD)^2)) + (0.00154 * (AC) * (FL))


estimated fetal weight in grams =

= 10 ^ (X)

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