head circumference
ENTER EGA
(weeks)
Head circumference
(mm)
percentile
Reference:Romero, R.,Pilu, G.,Jeanty,P.Ghidini,A. and Hobbins,J.C. (1988).The central nervous system.In
Prenatal Diagnosis of Congenital Anomalies
,p.56,Table1-15(Norwalk:Appleton & Lange)