Background: Ultrasound examination and measurement of fetal biometry has become anrnintegral part of modern obstetric care. These measurements can serve for dating pregnancies,rnassessment of fetal growth and fetal weight estimation.rnKnowledge of expected birth weight is attractive to clinicians as it is an important variablernaffecting perinatal mortality. Fetal weight estimation is thought to be helpful in predictingrnfetal survival and making management decisions in the very low birth weight group (