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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: | Medical and biological physics |
| Research Field: | Medical physics |
| Objective Division: | Health |
| Objective Group: | Other health |
| Objective Field: | Other health not elsewhere classified |
| UTAS Author: | Baldock, C (Professor Clive Baldock) |
| ID Code: | 116156 |
| Year Published: | 2010 |
| Deposited By: | Strategic Research Funding |
| Deposited On: | 2017-05-03 |
| Last Modified: | 2017-06-21 |
| Downloads: | 0 |
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