Dr. Christopher Deufel is an assistant professor and medical physicist in the Department of Radiation Oncology at Mayo Clinic, in Rochester, Minnesota. Dr. Deufel received his Ph.D. in experimental physics from Cornell University in 2007 and completed residency training in therapeutic medical physics at the Mayo Clinic from 2007-2010. Dr. Deufel is the chair of research for the Division of Medical Physics at Mayo Clinic and practice leader for Brachytherapy in the Department of Radiation Oncology. He also supervises physics resident education in brachytherapy and conducts research in brachytherapy applicator design, clinical brachytherapy techniques, and radiation treatment planning methods. His work has been published Nature Methods, Radiotherapy and Oncology, the International Journal of Radiotherapy and Oncology Biology Physics, Physics in Medicine and Biology, the Brachytherapy Journal, and the Journal of Applied Clinical Medical Physics. Dr. Deufel is an executive board member for the American Brachytherapy Society, vice-chair of the Working Group for Brachytherapy Clinical Applications for the American Association for Physicist in Medicine, and has been invited to speak at numerous national and international seminars.