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THE MEDICAL IMAGING TRIFECTA Stewart Carlyle Bushong, ScD, FAAPM, FACR Baylor College of Medicine Houston, Texas We the people of Radiology in order to provide a more perfect diagnosis, reduce patient radiation dose, control occupational radiation exposure, and produce a most diagnostic image do ordain and establish The Medical Imaging Trifecta. Sports enthusiasts recognize trifecta as a horse racing term and more recently introduced by Dick Vitale as a basketball term of accomplishment. In this refresher course The Medical Imaging Trifecta – reduce patient radiation dose, control occupational radiation exposure, and produce a most diagnostic image – will be discussed for each of the four major imaging modalities – computed tomography, nuclear medicine, radiography, and interventional radiology. Each of the imaging modalities presents a different challenge to meeting The Medical Imaging Trifecta and the result is a three by four matrix or twelve cells, each with specific information. Special emphasis is placed on the largest single source of radiation exposure – radon-222 – and the largest source of medical radiation exposure – computed tomography imaging. A careful review of the 2008 NCRP Report No. 160 “Ionizing Radiation Exposure of the Population of the United States” is presented. Objectives: At the end of this presentation the attendee will … 1. be able to identify the various sources of human radiation exposure and the relative intensity of each source. 2. have an understanding of the source of patient radiation dose for each imaging modality and how to manage this dose. 3. learn tools and techniques attendant to each imaging modality for reducing patient radiation dose without compromising image quality. 4. receive clinical information on how to improve image quality for each imaging modality 5. be able to apply the cardinal principles of radiation protection – time, distance, shielding – during any imaging procedure to reduce physician and technologist occupational radiation exposure NOTE: This presentation is available for any and all. I will leave it on the conference computer for you to copy if you wish. Otherwise send to me or leave me with a flash drive and your address and I’ll load this onto it and return it to you. Feel free to use any of the information as you wish and acknowledgement is not necessary.