1. Ultrasonic fetal cephalometry;Goldberg;Radiology,1966
2. The prenatal examination of the fetal cranium, spine, and central nervous system;Pasto;Semin Ultrasound CT MR,1984
3. Review: in utero sonographic diagnosis of fetal cerebral anomalies;Hidalgo;AJR Am J Roentgenol,1982
4. Ultrasound evaluation of the normal and abnormal fetal neural axis;Fiske;Radiol Clin North Am,1982