Added Value of Prenatal MRI Over Prenatal US In Detection of Etiology and Type of Ventriculomegaly

Abstract

Aims and Objectives: 1) To evaluate the accuracy of prenatal MRI in detecting fetal etiology and type of ventriculomegaly 2) To compare the diagnostic accuracy between prenatal MRI and prenatal 4D US in evaluating  etiology and type of ventriculomegaly by comparing their end results with post natal assessment after delivery in equivocal case  when possible. Material and Methods: Prospective hospital-based cohort study was done between january 2019 and March 2024 at Radiology Department . Fifty pregnant women after 20 weeks of pregnancy to 34 weeks who were sonographically suspected or diagnosed to have CNS anomalies. Pregnancy with ultrasound findings of ventriculomegaly  anomalies were recruited for prenatal MRI examination, prenatal ultrasound and MRI  findings were confirmed in cases of live births with  postnatal findings. Results: After conducting aprenatal ultrasound screening in all three trimesters, a total of 22 cases of ventriculomegaly  were diagnosed. It was seen that majority of anomalies were detected in 2nd trimester and ventriculomegaly was the most common anomaly. Conclusion: pre and postnatal MRI is the most essential part in detection of etiology and type of ventriculomegaly,  prenatal MRI could  detect the etilogy and type of most of the cases 18 and 19 cases respectively .