Sonographic Estimation of the Fetal Head Circumference: Accuracy and Factors Affecting the Error.

Background: Sonographic measurement of fetal head circumference (HC) is an essential parameter for the estimation of fetal weight as well as in cases with abnormal fetal head size. Since there is a lack of data, the present study was to assess the accuracy of ultrasonographic estimation of fetal HC and to identify factors that affect the accuracy of fetal HC estimation.

Material And Methods: A prospective cohort observational study was conducted for a year.