FETAL NEUROIMAGING UPDATE

Abstract Objectives To review the current imaging techniques available for the evaluation of the fetal brain. Findings US remains the initial screening modality with routine scanning typically performed at 18-20 weeks gestation. When a CNS abnormality is noted by US, MRI is increasingly being used to further clarify findings. Fetal MRI has the unique ability to provide high detailed anatomic information of the entire human fetus with high contrast resolution. This technique has grown due to the development of rapid single shot image acquisition sequences, improvement of motion correction strategies and optimizing shimming techniques, Conclusions The assessment of fetal CNS anomalies continues to improve. Advanced MRI techniques have allowed for further delineation of CNS anomalies and has become a cornerstone in the assessment of fetal brain well being. Those interpreting fetal studies need to be familiar with the strengths and limitations of each exam and be sensitive to the impact discussing findings can have regarding perinatal care and delivery planning. Collaboration with neurologists, neurosurgeons, geneticists, counselors and maternal fetal specialists are key in providing the best care to the families we treat.