ESTRO 2025 - Abstract Book

S2854

Physics - Dose prediction, optimisation and applications of photon and electron planning

ESTRO 2025

Conclusion: While bronze-PLA shields showed slightly higher transmission compared to traditional shields, this can be compensated for by increasing shield thickness. This novel approach enables rapid production of patient-specific shields while maintaining adequate radiation protection, potentially improving workflow efficiency in busy clinic. Future work will focus on clinical implementation and long-term durability assessment.

Keywords: Total body irradiation, shielding, 3D printing

References: 1. J. Van Dyk, J. M. Galvin, G. P. Glasgow, and E. B. Podgorsak, The physical aspects of total and half body photon irradiation, American Association of Physicists in Medicine, 1986 [AAPM Report No. 17]. 2. M. Oertel et al., "Pulmonary toxicity after total body irradiation—An underrated complication? Estimation of risk via normal tissue complication probability calculations and correlation with clinical data," Cancers (Basel) , vol. 13, no. 12, p. 2946, 2021. 3. H. Mekdash et al., "A simple technique for an accurate shielding of the lungs during total body irradiation," Tech. Innov. Patient Support Radiat. Oncol. , vol. 3-4, pp. 13-18, 2017.

3170

Digital Poster Hypoxia region dose escalation in head and neck cancer – dosimetric analysis

Lukas Knybel 1 , Marek Slavik 2 , Tomas Kazda 2 , Jan Svancara 3 , Jan Cincibuch 4 , Zuzana Zdeblova Cermakova 1 , Tomas Blazek 1 , Jakub Cvek 1 , Martin Dolezel 4 1 Department of Oncology, Faculty of Medicine and University Hospital, Ostrava, Czech Republic. 2 Department of Radiation Oncology, Masaryk Memorial Cancer Institute and Faculty of Medicine, Brno, Czech Republic. 3 Health Information Unit, Masaryk Memorial Cancer Institute, Brno, Czech Republic. 4 Department of Oncology, Faculty of Medicine and University Hospital, Olomouc, Czech Republic Purpose/Objective: Hypoxia occurs in the vast majority of head and neck tumors, often corresponds to the foci of local/regional, and seems to be an important parameter for pretherapeutic stratification for dose escalation throughout dose painting