Fetal brain MRI in polyhydramnios: Is it justified?

Abstract Introduction: Despite meticulous investigation of polyhydramnioscases, in many of these cases, congenital anomalies are detected only after birth. The aim of our study was to explore the contribution of fetal brain MRI to the detection of CNS anomalies in cases of polyhydramnios. Materials and methods: This was retrospective cohort studyon fetuses referred for the investigation of polyhydramniosat a single tertiary center. All fetuses underwent a detailed sonographic anatomical scan and a fetal brain MRI. Isolated and nonisolated polyhydramnioswere differentiated according to associated anomalies. MRI findings were compared between the groups. Results: A total of 46 fetuses were included in the study. Brain anomalies were detected in ultrasound in 12 (26%) cases while MRI detected brain anomalies in 23 (50%) cases. MRI detected more anomalies in fetuses with nonisolated compared to isolated polyhydramnios(62.9 and 31.6% respectively, p = 0.019). Conclusions: Fetal brain MRI may contribute to...