Absolute dose verifications in small photon fields using BANGTM gel
Abstract
Polymer gel dosimeters change their magnetic resonance (MR) and optical properties with the absorbed dose when irradiated and are suitable for narrow photon beam dosimetry in radiosurgery. Such dosimeters enable relative and absolute 3D dose verifications in order to check the entire treatment chain from imaging to dose application during commissioning and quality assurance.
For absolute 3D dose verifications in radiosurgery using Gamma Knife B, commercially available BANGTM Gels (BANG 25 Gy and BANG 3 Gy) together with dedicated phantoms were chosen in order to determine the potential of absolute gel dosimetry in radiosurgery.- Publication:
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Journal of Physics Conference Series
- Pub Date:
- January 2004
- DOI:
- 10.1088/1742-6596/3/1/034
- Bibcode:
- 2004JPhCS...3..228S