EUS2_How the Harmful Effects of Radiation can Affect Human Health
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Transcript of EUS2_How the Harmful Effects of Radiation can Affect Human Health
How the Harmful Effects of Radiation can Affect
Human Health
Layal K.JambiEUS2, University of SurreyMarch 2012
Out Line
•History of Radiation•What is exposure? •What is Radiation? •Effects of Radiation
•Radiation Protection
History of Radiation
•Since the 1900s, expert scientists have been aware of beneficial as well as the possibility of the harmful effects of ionizing radiation
•By using the knowledge of radiation hazards:–Radium-dial printers.
–Uranium miners.–Early medical radiation workers.–Japanese atomic bomb survivor.
–Evacuees from Chernobyl nuclear power station disaster
Exposure
•The actual process of humans being exposed to radiation or radioactive material
Radiation
•Transfer of energy that result either because of a change occurring naturally within an atom (e.g. radioactive decay) or a process caused by the
interaction of a particle with an atom
Ionizing Radiation
•When radiation passes through matter it produces positively and negatively charged particles (ions).
Sources of Ionizing Radiation
Effects of Radiation
Chain of Events Following Exposure to Ionizing Radiation
Biological Effects
Radiation Protection
•Limit and minimize the risk for people and environment generated by the use of ionizing radiation, as low as reasonably achievable (ALARA)
References
•Harbison, S & Martin, A. (2006). An Introduction to Radiation Protection. 5th
Ed. London: Hodder Arnold.
•IAEA. (2007). Safety Standards for Protecting People and Environment.
Vienna: IAEA.
•Kron, T & Trapp J. (2008). An Introduction to Radiation Protection in
Medicine. New York: Taylor & Francis Group.
•Maguire, G & Noz, M. (2007). Radiation Protection in the Health Care.
London: World Scientific.
•Martin, C & Sutton, D. (2002). Practical Radiation Protection in Health Care.
Oxford: Oxford University Press.
•Ritenour, E & Sherer, M & Visconti, P. (2011). Radiation Protection in Medical
Radiography. 6th Ed. UK: Mosby Elsevier