Arthur C. Fleischer, MD is Professor of Radiology and Radiological Sciences, Professor of Obstetrics and Gynecology, and Cornelius Vanderbilt Chair, Vanderbilt University School of Medicine. Eugene C. Toy, MD is Vice-Chair of Academic Affairs, Department of Obstetrics and Gynecology, Chair of the Graduate Medical Education Committee, and Director of the Ob-Gyn Residency Program, Methodist Hospital. Frank A. Manning, MD is Professor of Obstetrics and Gynecology, and Associate Director, Division of Maternal-Fetal Medicine, New York Medical College. Jacques S. Abramowicz, MD is Professor of Obstetrics and Gynecology, Director of Ultrasound Services, Director of the Center for Fetal Diagnosis and Therapy, and Director of Reproductive Genetics, Wayne State University. Luis Goncalves, MD is Section Head, Obstetrical Ultrasound and Fetal Imaging, Beaumont Hospital. Ana Monteagudo, MD is affiliated with MFM Associates, New York, New York Ilan Timor-Tritsch, MD is Director, Division of Diagnostic Ultrasound and Professor, Department of Obstetrics and Gynecology, New York University Langone Medical Center.