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Radiation Protection Dosimetry Advance Access originally published online on April 27, 2006
Radiation Protection Dosimetry 2006 120(1-4):14-19; doi:10.1093/rpd/nci603
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© The Author 2006. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

A real-time, high-resolution optical fibre dosemeter based on optically stimulated luminescence (OSL) of KBr:Eu, for potential use during the radiotherapy of cancer

R. Gaza1,2,* and S. W. S. McKeever1

1 Department of Physics, Oklahoma State University, 145 PS II, Stillwater, OK 74078, USA
2 Present address: Proton Therapy Center, UT M.D. Anderson Cancer Center, 1840 Old Spanish Trail, Houston, TX 77058, USA

* Corresponding author: rgaza{at}mdanderson.org

A real-time optically stimulated luminescence (OSL) dosimetry system for potential in vivo use during radiotherapy treatments is proposed. Single-crystal europium-doped KBr samples were grown in a Bridgman furnace, and characterised using optical absorption techniques. An algorithm for the processing of the OSL signal was defined for use in real-time measurements, and its performance was studied on data obtained with a home-built reader, using optical-fibre-coupled dosemeters. OSL dose–response, fading properties and temperature dependence of the signal were investigated in correlation with the concentration of Eu2+ dopant in the sample.


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