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.
Original language | English |
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Pages (from-to) | 012093-1-012093-5 |
Number of pages | 5 |
Journal | Journal of Physics: Conference Series |
Volume | 250 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2010 |
Externally published | Yes |
Event | International Conference on 3D Radiation Dosimetry (6th : 2010) - Hilton Head Island, SC Duration: 22 Aug 2010 → 26 Aug 2010 |