American Roentgen Ray Society

Although ultrasound remains the primary imaging modality used in prenatal imaging, fetal magnetic resonance imaging (MRI) is playing an increasing role in further evaluation of fetuses suspected of congenital anomalies. As 3-T MRI scanners become more common due to their improved image signal-to-noise ratio and anatomical detail, the benefits of 3-T MRI must be weighed against potential risks to the fetus that may result from the higher field strength.