Author Information By William D. Middleton, MD, FACR, Professor of Radiology, Section of Abdominal Imaging and Diagnostic Ultrasound, Mallinckrodt Institute of Radiology, Washington University School of Medicine, St.Louis, MO; Alfred B. Kurtz, MD, Professor of Radiology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, PA; and Barbara S. Hertzberg, MD, Professor of Radiology, Associate Professor of Obststrics and Gynecology, Co-Director, Fetal Diagnostic Center, Duke University Medical Center, Durham, NC