ESTRO 2025 - Abstract Book

S2657

Physics - Detectors, dose measurement and phantoms

ESTRO 2025

3865

Mini-Oral A standardized workflow for developing highly-realistic 3D-printed anthropomorphic phantoms Tim H.A Stassen 1 , Didier Lustermans 1 , Luana de Freitas Nascimento 2 , Frank Verhaegen 1 , Gabriel Paiva Fonseca 1 1 Department of Radiation Oncology (Maastro), GROW Research Institute for Oncology and Reproduction, Maastricht University Medical Centre+, Maastricht, Netherlands. 2 Research in Dosimetric Applications, Belgian Nuclear Research Centre , (SCK CEN), Mol, Belgium

Purpose/Objective:

Tissue-equivalent phantoms are essential in radiotherapy for imaging modalities - e.g. Computed Tomography (CT) – calibrations, workflow optimizations, uncertainty analysis and quality assurance. However, commercial phantoms often lack morphological complexity and are therefore limited in their effective application on radiotherapy equipment. Phantom development using 3D-printing (3DP) is a promising strategy in radiotherapy since it allows for more customization and creation of more realistic anthropomorphic phantoms for imaging and dosimetry. This study proposes a standardized workflow for creating phantoms that approximate both ICRU44-based physics metrics and human anatomy (Figure 1).