Image-Guided Radiotherapy Committee Key Members: Jeffrey Michalski, M.D., Chair, (1997); James A. Purdy, Ph.D., Co-Chair; Laurie Gaspar, M.D., Co-Chair, Brachytherapy Committee Liaison; Luis Souhami, M.D., Co-Chair, Stereotactic Radiosurgery Subcommittee Liaison; Matthew Ballow, M.D., Sarcoma Committee Liaison; Jeffrey Bradley, M.D., Lung Cancer Committee Liaison; Clifford K. S. Chao, M.D., Gynecologic Cancer Committee Liaison; Christopher Crane, M.D., Gastrointestinal Cancer Committee Liaison; Avraham Eisbruch, M.D., Head and Neck Cancer Committee Liaison; David Fallowil, Ph.D., Radiologic Physics Center (RPC) Liaison; Kenneth Forster, Ph.D.; Jack Fowler, Ph.D., Translational Research Program Committee Liaison; Michael T. Gillin, Ph.D., Medical Physics Committee Liaison; Mary Lee Graham, M.D.; William B. Harms, B.S., Three-Dimensional Quality Assurance Center Liaison; M. Saiful Huq, Ph.D.; Robert W. Kline, M.D.; Mark Langer, M.D.; Thomas R. Mackie, Ph.D.; Suresh Mukherji, M.D., American College of Radiology Imaging Network Liaison; Ervin B. Podgorsak, Ph.D.; Mack Roach, M.D., Genitourinary Cancer Committee Liaison; Janice Ryu, M.D.; Howard Sandler, M.D.; Christopher J. Schultz, M.D., Brain Tumor Cancer Committee Liaison; Michael Schell, Ph.D.; Lynn J. Verhey, Ph.D.; Frank Vicini, M.D., Breast Cancer Committee Liaison; and Kathryn A. Winter, M.S., Statistician