Radiation Protection Dosimetry Advance Access originally published online on October 20, 2007
Radiation Protection Dosimetry 2008 128(1):1-4; doi:10.1093/rpd/ncm425
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The application of effective dose to medical exposures
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Effective dose (E) was created to provide a dose quantity linked to health detriment due to stochastic effects, because the radiation dose quantities that can be measured only bear a limited relationship to health risk(1,2). The International Commission on Radiological Protection (ICRP) made clear that it was intended for use in the assessment of risks in general terms for radiation protection purposes. However, E was also a convenient dose quantity through which an indication of the level of risk from medical exposures could be obtained for use in clinical justification. It is now applied extensively in assessing doses from medical exposures and has been determined in 60% of the studies reported in Radiation Protection Dosimetry in the last 3 y. Unfortunately, some of those using E attribute to it a precision that is not warranted. This has fuelled debate about whether E is an appropriate dose quantity
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