Study of polymer gel for dose imaging in radiotherapy

Gel dosimeters in the form of layers are a promising tool for in-phantom absorbed dose imaging in radiotherapy, either with high gradient X-ray or electron radiation fields, as in conformal radiotherapies, or with neutron beams, as in boron neutron capture therapy (BNCT). A normoxic polymer gel has been studied, and the results are compared with those obtained with Fricke gel dosimeters exposed to the same fields and in the same phantom configuration. Although promising, polymer gel layers need further improvements in order to obtain higher reliability.