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Radiation Protection Dosimetry Advance Access originally published online on October 9, 2008
Radiation Protection Dosimetry 2008 132(1):80-87; doi:10.1093/rpd/ncn252
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© The Author 2008. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Potential clinical utility of a fibre optic-coupled dosemeter for dose measurements in diagnostic radiology

A. Kyle Jones1,* and David Hintenlang2

1 Department of Imaging Physics, The University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
2 Department of Nuclear and Radiological Engineering, University of Florida, 202 Nuclear Sciences Center, Gainesville, FL 32611, USA

* Corresponding author: kyle.jones{at}di.mdacc.tmc.edu

Received June 9, 2008, amended September 8, 2008, accepted September 13, 2008

Many types of dosemeters have been investigated for absorbed dose measurements in diagnostic radiology, including ionisation chambers, metal-oxide semiconductor field-effect transistor dosemeters, thermoluminescent dosemeters, optically stimulated luminescence detectors, film and diodes. Each of the aforementioned dosemeters suffers from a critical limitation, either the need to interrogate, or read, the dosemeter to retrieve dose information or large size to achieve adequate sensitivity. This work presents an evaluation of a fibre optic-coupled dosemeter (FOCD) for use in diagnostic radiology dose measurement. This dosemeter is small, tissue-equivalent and capable of providing true real-time dose information. The FOCD has been evaluated for dose linearity, angular dependence, sensitivity and energy dependence at energies, beam qualities and beam quantities relevant to diagnostic radiology. The FOCD displayed excellent dose linearity and high sensitivity, while exhibiting minimal angular dependence of response. However, the dosemeter does exhibit positive energy dependence, and is subject to attenuation of response when bent.


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