ESTRO 2025 - Abstract Book

S365

Brachytherapy - Physics

ESTRO 2025

Conclusion: The accuracy of AIEMT-based reconstruction is likely superior to manual image-based reconstruction in patients. AIEMT-based applicator reconstruction can lead to more accurate and automated reconstructions of complex and modular Fletcher-based applicators.

Keywords: implant reconstruction, electromagnetic tracking

References: [1] van Vliet–Pérez, Sharline M., et al. "Time-action and patient experience analyses of locally advanced cervical cancer brachytherapy." Brachytherapy 23.3 (2024): 274-281. [2] Androulakis, Ioannis, et al. "PHSOR04 Presentation Time: 9: 15 AM: Analysis of Electromagnetic Tracking Sensor Path in Venezia™ Applicators for High-Dose-Rate Brachytherapy." Brachytherapy 23.6 (2024): S59.

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Proffered Paper Experimental characterization of a single point plastic scintillation detector for in-vivo dosimetry in HDR Brachytherapy Chahrazed Ghannoudi 1,2 , Marie-Claude Lavallée 1,2 , Benjamin Côté 3 , Luc Beaulieu 1,2 1 Département de physique, de génie physique et d'optique et Centre de recherche sur le cancer, Université Laval, Québec, Canada. 2 Département de radio-oncologie et Axe Oncologie du CRCHU de Québec, CHU de Québec, Université Laval, Québec, Canada. 3 Medscint Inc, Medscint Inc, Québec, Canada Purpose/Objective: HDR brachytherapy is characterized by a high dose gradient surrounding the target to protect healthy tissues. At these small distances positioning/displacement errors significantly impact dose calculation. This study characterizes