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