PPT-Radiation Risk

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. The US Environmental Protection Agency EPA is responsible for advising the government on radiation hazards and regulating certain sources of radioactivity in the environment This booklet provides basic facts about radiation science as well as inform PARM AUTUMN SYMPOSIUM. October 6 & 7, 2011. Margaret “Peggy” Blackwood, MS, DABR. System Director, Radiation Physics. Radiation Safety Officer. West Penn Allegheny Health System. Radiation safety…we’ve come a long way. PotPourri. Ray Copes, MD, MSc. Director, Environmental and Occupational Health. Public Health Ontario. Associate Professor, University of Toronto. Objectives. 1)Quick 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?. Trinity Test Site. July . 16th, 1945. Above: Bomb Detonation. Top Middle: “The Gadget”. Bottom Middle: Trinitite . Right: Bomb Drop Tower. Some members of the public seem to equate anything nuclear with the concept of nuclear weapons. . . Protection. in . Laboratory. . work. Mats Isaksson, prof.. Department. . of. . radiation. . physics. , GU. mats.isaksson@radfys.gu.se. Fundamental . principles. (ICRP). Justification. Optimisation. Radioactivity: The characteristic of various materials to emit ionizing radiation. Ionization: The removal of electrons from an atom. The essential characteristic of high energy radiations when interacting with matter.. Radiation effects:. Deterministic effects. Stochastic effects. Deterministic effects. A deterministic effects has a threshold in dose.. The severity of the effect is dose related.. Radiation induced cataracts are an example of a deterministic effects.. 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. and . Risk . Anthony Waker. Faculty of Energy Systems and Nuclear Science. External Exposure. The source is external to the body. Types of Exposure. CT Scanner: A few to 10s of . mSv. per examination. 　. 1958-2009. *. Hiromi Sugiyama. 1. , . Munechika. . Misumi. 1. , . Alina. Brenner. 1. . Eric J Grant. 1. , . Ritsu. Sakata. 1. , Dale Preston. 2. , Atsuko . Sadakane. 1. , Mai . Utada. 1. , . Submission to the BEIS meeting. London Sept 12. th. 2017 . Christopher Busby. Scientific Secretary. European Committee on Radiation Risk. 1117 Latvian Academy of Sciences, Riga. christo@greenaudit.org. 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 . 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 .