ABSTRACT
INTRODUCTION Ultrasound scans have for many years been the modality of choice for imaging the fetus in utero. More recently, the use of magnetic resonance imaging (MRI) has provided a novel imaging modality for suspected fetal anomalies in general and visualisation of fetal brain structures in particular. MRI has become increasingly important where ultrasound resolution is limited because of maternal obesity or the fetal position. Recent developments in MRI technology, and in particular shorter acquisition times, can now provide clinicians with good-quality, non-motion images. This chapter describes the principles and development of fetal imaging by ultrasound scan and MRI, their limitations, and the diagnosis and management of congenital neurological disease.
