... gestational age and expected date of childbirth.Obstetrics reportMeasure and calculate amniotic fluid index(AFI) Calculate the rate (BPD/ ... OFD, FL/AC, FL/BPD, HC/AC)Estimate fetus weight Infer the gesattional weeks and expected date ... and calculating fetus weight, pregnancy week, expected delivery date, fetal physiological rating according to the previous measurements Peripheral ...