Fetal weight estimation by ultrasound measurement

Fetal weight is estimated by above formulas. The error is around ± 10%

BPD: biparietal diameter
APTD: antro-posterior trunk diameter
TTD: transverse trunk diameter
AC: abdominal circumference
FL: femur length
SL: spine length based

How to measure fetus; See Quick time movie.

fetal measurement: QuickTime movie (326K)

More details, see published article.

N.Shinozuka et al. Formulas for Fetal Weight Estimation by Ultrasound Measurements based on Neonatal Specific Gravities and Volumes, Am J Obstet Gynecol 1987;157:1140-5

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