PPT-Radiation Exposure

PotPourri Ray Copes MD MSc Director Environmental and Occupational Health Public Health Ontario Associate Professor University of Toronto Objectives 1Quick Review The EMS What sources contribute to population exposure to ionizing radiation How many radiation agents have been reviewed by IARC and what are their ratings. Centers for Disease Control and Prevention. Office of Public Health Preparedness and Response. Jeffrey B. Nemhauser, MD. Deputy Associate Director for Science. Office of Public Health Preparedness and Response. Fact . vs. Fiction. Disclosures. No financial disclosures for myself or family. No off label uses will be discussed. One exception: I am a radiologist. 25+ years selling . xrays. for a living. Mortgages and college tuition still to pay. transmitted. absorbed. reflected. 1. transmission. Radiation passes through atmosphere unimpeded.. Shortwave and longwave “windows” . 2. absorption. Energy is transferred to absorber; absorber emits energy. Strategies for Reducing Radiation Exposure with PET Insert presenter information here “In addition to cardiac PET having improved diagnostic utility compared with SPECT imaging, patient radiation exposure is significantly less with most PET perfusion radiotracers.” Non-ProgramNRP01 Non-Ionizing Radiation ProgramMemphisKnoxvilleChattanoogaNashvilleNo/TitleNRP01 Non-Ionizing Radiation ProgramResp Office Research Safety AffairsEffective Date 9/10/2020CategoryRadia What are they? . exposure … contamination. Are they the same?. Radioactivity. Spontaneous emission of radiation from the nucleus of an unstable isotope. Disintegration Decay. Demonstrate Decontamination. Centers for Disease Control and Prevention. Office of Public Health Preparedness and Response. Jeffrey B. Nemhauser, MD. Deputy Associate Director for Science. Office of Public Health Preparedness and Response. 199 Daniel N DeMaio, MEd, R.T.(R)(CT) S ince its development in the early 1970s, com - puted tomography (CT) has secured a place among important diagnostic imaging proce - dures, helping to save coun R 7/11 3 - 1 CHAPTER 3 RADIATION PROTECTION PAGE I. External Radiation Protection ................................ ................................ .......................... ...... 3 - 3 A. Time .... The cell life cycle The cell cycle G0 = Cell is resting G1 = RNA and proteins are made S = DNA is made G2 = Apparatus for mitosis is built M = Mitosis (the cell divides into 2 cells) G0 phase (restin . Radiation is the emission of energy in the form of waves or particles. Radiation that is so powerful that it can remove electrons from atoms is called ionizing.. Examples of types of ionizing radiation are x-rays from medical machines and gamma rays from radioactive substances. . •. Radiation biology . is the study of the action of ionizing radiation on living organisms . •The action is very complex, involving physics, chemistry, and biology . –Different types of ionizing radiation . Exposure: Leg pain on walking, outcome: knee pain. Exposure: knee pain, outcome: . M15 . Polyarthrosis. Exposure: . M15 . Polyarthrosis. . , outcome: knee pain. Exposure: knee pain, outcome: . other specific joint derangements. Cascade Surgery Center. About the Course . X-ray Radiation Safety. . X. -ray radiation safety training is mandatory for radiation workers to comply with State Regulatory . requirements. . Individuals requiring this training .