David Ballard is an assistant professor of radiology in the abdominal imaging section and director of the 3D Printing Lab for Mallinckrodt Institute of Radiology at Washington University School of Medicine in St. Louis. He completed both a radiology residency and an abdominal imaging fellowship at MIR, where he was a chief resident. Dr. Ballard also completed a T32 research fellowship in the TOP-TIER program. He earned his medical degree from Louisiana State University. He serves as a section editor for Diagnosis Please in Radiology. He is also an associate editor for 3D Printing in Medicine, an assistant editor for the American Journal of Roentgenology, and a member of the Society of Abdominal Radiology Disease Focused Panel on Inflammatory Bowel Disease. With over 100 publications, his research interests include 3D printing in medicine along with Crohn’s disease.