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Assessment of effective dose from concomitant exposures required in verification of the target volume in radiotherapy

Waddington, S. P.; McKenzie, A. L.

Authors

S. P. Waddington

A. L. McKenzie



Abstract

The requirement of the Ionising Radiation (Medical Exposure) Regulation 2000 [IR(ME)R] of justifying all exposures to ionizing radiation includes those from radiotherapy double exposure portal images resulting in exposure to normal tissues outside the treatment volume. Typical effective doses were calculated for a range of common sites using CT data to outline those parts of specific organs subject to concomitant radiation and generate dose volume histograms. The product of the mean dose and the relative probability of inducing a fatal cancer in specific organs was used to determine a representative total effective dose in mSv per monitor unit for each site. A table of representative effective doses, ranging from 0.32 mSv to 2.56 mSv per monitor unit, was produced, which may be used to monitor cumulative effective doses of individual patients from double exposure portal images, in addition to those received from localization procedures. © 2004 The British Institute of Radiology.

Citation

McKenzie, A. L., Waddington, S. P., McKenzie, A., & Waddington, S. (2004). Assessment of effective dose from concomitant exposures required in verification of the target volume in radiotherapy. British Journal of Radiology, 77(919), 557-561. https://doi.org/10.1259/bjr/67235257

Journal Article Type Article
Publication Date Jul 1, 2004
Journal British Journal of Radiology
Print ISSN 0007-1285
Publisher British Institute of Radiology
Peer Reviewed Not Peer Reviewed
Volume 77
Issue 919
Pages 557-561
DOI https://doi.org/10.1259/bjr/67235257
Keywords radiotherapy, portal imaging, radiation protection
Public URL https://uwe-repository.worktribe.com/output/1059464
Publisher URL http://dx.doi.org/10.1259/bjr/67235257


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