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Radiation Protection Dosimetry Advance Access published online on April 21, 2008
Radiation Protection Dosimetry, doi:10.1093/rpd/ncn148
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© The Author 2008. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

DOUBLE-DOSIMETRY ALGORITHM FOR WORKERS IN INTERVENTIONAL RADIOLOGY

Peter Clerinx1,*, N. Buls1, H. Bosmans2 and J. de Mey1

1 Department of Radiology, UZ Brussel, Vrije Universiteit Brussel, Laarbeeklaan 101, 1090 Brussels, Belgium
2 Department of Radiology, University Hospitals, Catholic University of Leuven, Herestraat 49, 3000 Leuven, Belgium

* Corresponding author: peter.clerinx{at}uzbrussel.be

Based on double-dosemeter readings, a conservative effective dose (E) estimation algorithm for lead apron workers in interventional radiology is proposed. Typical radiation conditions for various exposure geometries were simulated using the MCNPX 2.4.0 code. The simulation model consisted of an X-ray source and image intensifier, a patient phantom and a voxelised staff member phantom with lead apron. The effective staff dose and dosemeter readings for several positions of the worker were calculated. The effective dose to a physician, positioned in close proximity to the primary beam, can be estimated within a 10% underestimation margin by E = 1.64 Hp(10)thorax,under + 0.075 Hp(10)neck,over. The dose to the eye lens can be estimated by a dosemeter reading at collar level (R2 = 0.98).


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