ESTRO 2024 - Abstract Book

S4098

Physics - Inter-fraction motion management and offline adaptive radiotherapy

ESTRO 2024

Conclusion:

Our breast technique appears to be robust for clinical breathing motions, with stable breath holds and with DVH parameters uncorrelated to breathing motion amplitude. We have the possibility to provide visual feedback to the patient, but this was not used in this study to establish the baseline robustness of our treatment plan and setup. Although the results indicate good dose-distributions without visual feedback, we may apply visual feedback for selected patients, as several patients indicated in a separate study that they felt more confident in their breath holds with visual feedback.

Keywords: breathold, breast, surface guidance

References:

[1] . Surface guided radiation therapy: An international survey on current clinical practice. Batista V et al. (2022) Tech Innov Patient Support Radiat Oncol. Mar 30;22:1-8.

[2] Set-up verification and 2-dimensional electronic portal imaging device dosimetry during breath hold compared with free breathing in breast cancer radiation therapy. Brouwers PJAM et al. (2015) Practical Radiation Oncology 5(3) 135-141.