Dowsett's Physics of Diagnostic Imaging

E. Russell (Russ) Ritenour completed a Ph.D. in physics from the University of Virginia in 1980.His dissertation work involved theoretical and experimental studies in radiation dosimetry andthe design of radiation therapy dose and fractionation schemes for combinedradiotherapy/chemotherapy in solid tumors. After completing a post-doctoral fellowship inMedical Physics at the University of Colorado Health Sciences center, he stayed on the faculty asDirector of Graduate Studies in Medical Physics until moving to the University of Minnesota in1989 where he was Professor and Chief of Physics in the Department of Radiology, MedicalSchool, and Director of Graduate Studies in Biophysical Sciences and Medical Physics in theGraduate School for twenty-five years. Since 2014, he has been a Professor of Medical Physics inthe Department of Radiology at the Medical University of South Carolina and has been given the honorific title of Emeritus beginning July 2026.He has been a consultant to the U.S. Army for resident physics training and has served theAmerican Board of Radiology in various capacities since 1986 including membership in oral andwritten exam committees and as Chair of the Physics Committee for the physics section of theradiology resident’s exam. He also served as Imaging Physics Editor of the journalsRadiographics and The American Journal of Roentgenography. He has been a Board Memberand Treasurer of the Radiological Society of North America Research and Education Foundation,and a Board Member of the International Organization of Medical Physics. Dr. Ritenour iscertified by the American Board of Radiology in Radiation Therapy and Diagnostic RadiologicMedical Physics. He is a Fellow and Past President of the American Association of Physicists inMedicine and a Fellow of the American College of Radiology.Dr. Sameer Tipnis is currently a Professor of Radiology & Chief of Medical Physics in the Dept. of Radiology andRadiological Science at the Medical University of South Carolina (MUSC). He received his PhD in Physicsfrom The University of Massachusetts Lowell in 1996. Thereafter, he worked in a research anddevelopment firm for 7 years focusing on developing high-speed x-ray imaging systems and scintillatorsfor x-ray and gamma-ray imaging.At MUSC, he provides guidance on optimizing imaging protocols in CT, Nuclear Medicine, and radiationsafety. He teaches radiology residents, cardiology fellows and medical students about physics ofradiological imaging and ionizing radiation. During his time at MUSC, Dr. Tipnis has served as theRadiation Safety Officer for 7 years, overseeing the radiation safety program for the hospital and theUniversity. Dr. Tipnis is board certified by the American Board of Radiology (ABR) in Diagnostic MedicalPhysics and Nuclear Medical Physics. Dr. Tipnis is a Fellow of the American Association of Physicists inMedicine (AAPM) and chairs the task group TG361 on the recommended use and management ofprotective garments. He is a member of 3 other sub-committees for radiation protection, radiologyresident curriculum, and cardiology fellow’s curriculum.Dr. Tipnis serves on the Board of Trustees of the ABR as the trustee for Diagnostic Medical Physics, andas an oral examiner for ABR’s Diagnostic and Nuclear Medicine certifying exams. He is currently a co-Editor-in-Chief of Medical Physics International, a publication of the IOMP, section editor for radiologyphysics for Contemporary Diagnostic Radiology and a member of the editorial board for theEncyclopedia of Medical Physics. He is a faculty member at the biennially organized College on MedicalPhysics, at the International Centre for Theoretical Physics, Trieste, Italy. Dr. Tipnis has published over 50peer-reviewed research articles related to radiation exposure, techniques in radiological imaging, andthe development of scintillators.

• 1. Radiation and X-ray production 2. Interactions of Radiation 3. Radiation detectors 4. Digital Images5. Radiography 6. Fluoroscopy 7. Computed tomography 8. Radioactivity and Nuclear medicine 9. Nuclear medicine imaging 10. Principles of Ultrasound 11. Ultrasound Imaging 12. Principles of Magnetic resonance 13. Magnetic Resonance Imaging 14. Radiobiology 15. Radiation Protection