Limitations: Abdominal circumference can be difficult to measure accurately by ultrasound. Weight estimates using abdominal circumference alone can have a high standard deviation (about 11%).
Campbell (1975)
estimated fetal weight in kilograms =
= e ^ (-4.564 + (0.282 * (abdominal circumference in cm)) - (0.00331 * ((abdominal circumference in cm)^2)))
Hadlock (1984)
estimated fetal weight in grams =
=10 ^ (2.695 + (0.253 * (abdominal circumference in cm)) - (0.00275 * ((abdominal circumference in cm)^2)))
The equation was not implemented as unable to obtain valid answers as written.
Vintzileos (1987)
estimated fetal weight in grams =
=10 ^ (3.046 - (0.18 * (abdominal circumference in cm)) + (0.015 * ((abdominal circumference in cm)^2)) - (0.0004 * ((abdominal circumference in cm)^3)) + (0.000004 * ((abdominal circumference in cm)^4)))
Warsof (1977)
estimated fetal weight in kilograms =
=10 ^ (-1.8367 + (0.092 * (abdominal circumference in cm)) - (0.000019 * ((abdominal circumference in cm)^3)))
