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Water equivalency evaluation of PRESAGE® dosimeters for dosimetry of Cs-137 and Ir-192 brachytherapy sources

Citation

Gorjiara, T and Hill, R and Kuncic, Z and Baldock, C, Water equivalency evaluation of PRESAGE dosimeters for dosimetry of Cs-137 and Ir-192 brachytherapy sources, 6th International Conference on 3D Radiation Dosimetry (IC3DDose 2010), South Carolina, USA, 22-26 August 2010, Journal of Physics: Conference Series, 250 (1), pp. 462-466. ISSN 1742-6588 (2010) [Refereed Conference Paper]


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Copyright Statement

Copyright 2010 IOP Publishing Ltd.

DOI: doi:10.1088/1742-6596/250/1/012093

Abstract

A major challenge in brachytherapy dosimetry is the measurement of steep dose gradients. This can be achieved with a high spatial resolution three dimensional (3D) dosimeter. PRESAGE® is a polyurethane based dosimeter which is suitable for 3D dosimetry. Since an ideal dosimeter is radiologically water equivalent, we have investigated the relative dose response of three different PRESAGE® formulations, two with a lower chloride and bromide content than original one, for Cs-137 and Ir-192 brachytherapy sources. Doses were calculated using the EGSnrc Monte Carlo package. Our results indicate that PRESAGE® dosimeters are suitable for relative dose measurement of Cs-137 and Ir-192 brachytherapy sources and the lower halogen content PRESAGE® dosimeters are more water equivalent than the original formulation.

Item Details

Item Type:Refereed Conference Paper
Keywords:brachytherapy, dose gradients, water equivalency
Research Division:Physical Sciences
Research Group:Other Physical Sciences
Research Field:Medical Physics
Objective Division:Health
Objective Group:Other Health
Objective Field:Health not elsewhere classified
Author:Baldock, C (Professor Clive Baldock)
ID Code:116156
Year Published:2010
Deposited By:Research Operations
Deposited On:2017-05-03
Last Modified:2017-06-21
Downloads:0

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