ESTRO 2025 - Abstract Book

S355

Brachytherapy - Physics

ESTRO 2025

Conclusion: Following societal recommendations for seed dosimetry [1] is straightforward and an important step in qualitiy assurance of LDR implants. Because of the small deviation between the three measurements of the same seed we will reduce this to one measurement per seed only. A seed class distribution of RAKR for the seed model used could be estimated to be normally distributed.

Keywords: Dosimetry, LDR, QA

References: [1] Calatayud et al. Radiother Oncol 135 (2019) 120-129

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Digital Poster On an in-house developed robustness assessment framework for high-dose-rate brachytherapy Silvan Mueller, Francine El Khoury Youhanna, Hannes Anton Loebner, Dario Terribilini, Werner Volken, Julien Ott, Kristina Loessl, Michael Karl Fix, Peter Manser Division of Medical Radiation Physics and Department of Radiation Oncology, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland Purpose/Objective: In clinical brachytherapy practice, there are systematic and random uncertainties of parameters such as source positioning and dwell times that have the potential to affect the dose distribution of high-dose-rate (HDR)