Characterization of an inorganic scintillator for small-field dosimetry in MR-guided radiotherapy.

ABSTRACT:

Introduction

Aim of this study is to dosimetrically characterize a new inorganic scintillator designed for magnetic resonance-guided radiotherapy (MRgRT) in the presence of 0.35 tesla magnetic field (B).

Methods

The detector was characterized in terms of signal to noise ratio (SNR), reproducibility, dose linearity, angular response, and dependence by energy, field size, and B orientation using a 6 MV magnetic resonance (MR)-Linac and a water tank. Field size dependence was investigated by measuring the output factor (OF) at 1.5 cm. The results were compared with those measured using other detectors (ion chamber and synthetic diamond) and those calculated using a Monte Carlo (MC) algorithm. Energy dependence was investigated by acquiring a percentage depth dose (PDD) curve at

SUBMITTER: Cusumano D 

PROVIDER: S-EPMC7497936 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature