Type of the study: This is a descriptive cross-sectional study~Study Setting: 300 patients coming for antenatal care at sohag governorate undergo routine second trimester scan.~patients and methods:~Inclusion criteria:~All pregnant females of 18 to 45 years old.~gestational age of 20- 22 gestational week .~Exclusion criteria:~1-age less than18years and more than 45 years. gestational age less or more than20- 22 weeks. Samples Methods 300 pregnant women low risk pregnancy will be scanned at 20-22 weeks as routine antenatal care and Examination of the fetal CNS will be performed with a high resolution two dimintional ultrasound machine (Voluson E8) equipped with a RAB 4 to 8MHz multifrequency transabdominal Probe. Four standard recommended views-transventricular, falx, cavum, and posterior fossa or transcerebellar views-provide an overview of fetal intracranial anatomy during the second trimester anatomy scan.~Follow-up information will be obtained in all cases, and all infants will be considered healthy by pediatric examination. In selected cases, postnatal single-shot fast spin-echo magnetic resonance (MR) imaging will be performed as integrated, complementary investigation.to confirm diagnosis.
This is a descriptive cross-sectional study 300 patients coming for antenatal care at sohag governorate undergo mid anatomical scan.~Samples 300 pregnant women have mid anatomical scan at 20-22 weeks as routine antenatal care and Examination of the fetal CNS will be performed with a high resolution two dimensional ultrasound machine (Voluson E8) equipped with a RAB 4 to 8MHz multifrequency transabdominal Probe. Four standard recommended views-transventricular, falx, cavum, and posterior fossa or transcerebellar views-provide an overview of fetal intracranial anatomy during the second trimester anatomy scan.~Follow-up information will be obtained in all cases, and all infants will be considered healthy by pediatric examination. In selected cases, postnatal single-shot fast spin-echo magnetic resonance (MR) imaging will be performed as integrated, complementary investigation.to confirm diagnosis.