S39
Brachytherapy - General brachytherapy
ESTRO 2026
Conclusion: Micro-silica DOSEmapper™ TLD IVD is feasible and integrates into HDR brachytherapy with minimal workflow disruption. Urethral dosimetry showed good TPS agreement, supporting clinical use. Rectal results were more variable due to anatomical and positional factors. Ongoing optimisation of imaging, applicator geometry, and positional QA is required. Future work will expand recruitment, introduce 1.0 mm TLDs, and compare TLD, MOSFET, and TPS doses to refine implementation. Keywords: in vivo dosimetry, treatment verification References: [1] Fonseca, G.P., Johansen, J.G., Smith, R.L., Beaulieu, L., Beddar, S., Kertzscher, G., Verhaegen, F. and Tanderup, K. (2020). In vivo dosimetry in brachytherapy: Requirements and future directions for research, development, and clinical practice. Physics and Imaging in Radiation Oncology, 16, pp.1– 11. doi:https://doi.org/10.1016/j.phro.2020.09.002.[2] Jaberi, R., Babaloui, S., Siavashpour, Z., Moshtaghi, M., Shirazi, A., Joya, M., Gholami, M.H. and Jafari, S. (2022). 3D in vivo dosimetry of HDR gynecological brachytherapy using micro silica bead TLDs. Journal of Applied Clinical Medical Physics, [online] 23(9), p.e13729. doi:https://doi.org/10.1002/acm2.13729. BRACHYTHERAPY: SURVEY OF ITS USE IN ITALY Giulia Paolani 1 , Elisabetta Cagni 1 , Antonella Stravato 2 , Giulia Sangalli 3 , Barbara Ghedi 4 , Lidia Strigari 5 1 Medical Physics Unit, Department of Advanced Technology, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy. 2 Medical Physics Department, Azienda Ospedaliera "San Giovanni-Addolorata", Roma, Italy. 3 Medical Physics Department, Ospedale A. Manzoni, Lecco, Italy. 4 Medical Physics Department, Fondazione Poliambulanza, Brescia, Italy. 5 Medical Physics Department, IRCCS Azienda Ospedaliero- Universitaria di Bologna, Bologna, Italy Purpose/Objective: This study aimed to map the adoption of Artificial Intelligence (AI) tools in brachytherapy (BT) across Italy and to capture the insights, unmet needs, and expectations of Italian Medical Physicists engaged in BT, providing a snapshot of the current and future role of AI in this specialized domain. Material/Methods: The Italian Association of Medical Physics (AIFM) brachytherapy working group conducted a national survey on available AI and/or automated tools and on Digital Poster 2702 ARTIFICIAL INTELLIGENCE TOOLS IN any need for solutions that take into account the different stages of the BT workflow. The Google Form
questionnaire contained 46 questions covering centre information, availability, use/needs, feelings, experience/issues on the application of AI/automation solutions. Results: The questions were completed by 34 Institutions from 18/20 regions (Figure 1).
Considering the possible applications of AI/automation in the BT workflow, participants expressed strong interest in “Segmentation/Contouring on images with implant/catheter” (71%), “Plan summation for BT-EBRT treatments” (65%), “Prediction of the optimal implant/catheter” (62%) and “Implant/catheter reconstruction” (62%). Only 6/34 (17.6%) centres have automatic segmentation software for BT and 3/6 centers reported using autosegmentation in clinical practice; however, 30/34 (88.2%) asserted it would be useful in clinical practice (Figure 2).
Considering automatic catheter reconstruction, 10 centers (29.4%) have specific TPS tools, and 8/10 centers use these tools in clinical practice under the supervision of specialists, with a high rate of manual
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