Magnetic resonance imaging of fetal cerebral ventriculomegaly

Fetal ventriculomegaly is one of the most common findings on prenatal ultrasound, and one of the most common indications for fetal magnetic resonance imaging (MRI). The aim of this article is to explain the different terminology used to describe the dilatation of the fetal cerebral ventricles, explain the impact of imaging (ultrasound and MRI) in this clinical scenario, illustrate common causes of ventriculomegaly and summarise the evidence regarding prognosis for these children, in order to be able to provide appropriate prenatal advice.