核医学与放射治疗

Assessment of Spatial and Dosimetric Accuracy of a 0.35 T MR-Linac using a Modular Phantom and PG Measurements

Abstract

Lukas Nierer

Polymer gel dosimetry is a promising technique in radiation therapy to measure and verify the delivered radiation dose. It is a three-dimensional dosimetry method that uses a polymer gel as a dosimeter. This gel is made up of a mixture of monomers, initiators and other chemicals that polymerize when exposed to radiation. The polymerization process changes the optical density of the gel, allowing the dose distribution to be visualized using magnetic resonance imaging (MRI).