Year

2019

Degree Name

Doctor of Philosophy

Department

School of Engineering Physics

Abstract

In the last decade, the majority of radiotherapy treatments are delivered via advanced radiotherapy technologies such as intensity-modulated radiation therapy (IMRT), volumetric-modulated arc therapy (VMAT) and stereotactic body radiation therapy (SBRT). The unique properties of these modalities such as small and irregular field shapes, continuously varying fluence/dose rates, and beam delivered at several different angles and from non-coplanar directions produces non-uniform, modulated intensity and conformed absorbed dose distribution which in turn improves the outcome of the treatment. However, the complexities associated with these technologies can create large deviations in treatment dose, requiring extensive dose measurement verification and quality assurance (QA) procedures to ensure the patient’s treatment is performed correctly and safely.

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Unless otherwise indicated, the views expressed in this thesis are those of the author and do not necessarily represent the views of the University of Wollongong.