Description:Imaging of the fetus is the most common ultrasound study performed. While most studies reveal little more than a healthy fetus, the ability to identify anomalies related to the development of the fetal brain and musculoskeletal system is crucial. Included in this issue are articles on the use of ultrasound to diagnose cystic brain masses, neural migration anomalies, and abnormalities of the cranium, spine, thorax, and upper and lower extremities. The ability to detect these problems early can have a positive impact on the course of the pregnancy, during delivery, and postpartum.