Abstract
The aim of this study was to investigate the radiological properties in the kilovoltage and megavoltage energy ranges of 3D printed materials which are currently used to create modern radiotherapy phantoms. In particular, the effect of printing parameters such as the percentage infill and extrusion factor were investigated. The 3D printed materials studied were Stonefil, PLA, GMASS, ABS and mABS, with dimensions 5x5x5cm3 and a range of different infill percentages and extrusion factors. Each material was characterised in terms of its relative electron density (RED) using a 6MV treatment beam of a linear accelerator and also using 120kV CT images of the materials.
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