Effect of container size on the accuracy of polymer gel dosimetry

Abstract

The radiation-induced polymerization reaction in polymer gel dosimeters is exothermic. The rate of polymerization for vinyl groups depends on the temperature. In this paper we show that the size of the container filled with gel being irradiated affects the values of T2 determined by magnetic resonance imaging (MRI), and consequently leads to modulations in the determination of the absorbed dose. © 2006 IOP Publishing Ltd.