Abstract

Pre-treatment plan verification and QA for SRS treatments is currently performed using mainly: point, 1D and 2D dosimeters, which are often non-water equivalent and exhibit restricted spatial resolution. These methods present well-known problems that are enhanced when very small target volumes are irradiated. The aim of this study is to address these problems using VIPET polymer gel dosimetry, combined with EBT2 film dosimetry, for 3D pre-treatment SRS plan verification of a very small target volume.

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