ESTRO 2024 - Abstract Book

S3250

Physics - Detectors, dose measurement and phantoms

ESTRO 2024

to treatment interruption and resumption of less than 1%. The differences in the dose distribution coincide in at least 95% of the points within a gamma of less than 3% and 1 mm, even for a treatment with 6 phases.

Acknowledgements

This Project has received funding from Euratom research and training programme 2019-2020 under agreement No. 945196 (SINFONIA Project).

Keywords: Gating, Radiochromic Film, Phantom

References:

1. Lee, S. H., Kim, K. B., Kim, M., Yoo, H. J., Park, S. W., Jung, H., Ji, Y. H., & Yi, C. (2013). Quantitative analysis of dose distribution to determine optimal width of respiratory gating window using GAFChromic EBT2 film. Journal of the Korean Physical Society, 62(4), 657-663.

2.Savanović, M., Jaroš, D., &Foulquier, J. N. (2021). Comparison of phase-gated and amplitude-gated dose delivery to a moving target using GAFChromic EBT3 film. Journalof Medical Physics.

3.Crijns, S., Kok, J. G. M., Lagendijk, J. J. W., &Raaymakers, B. W. (2011). Towards MRI-guided linear accelerator control: gating on an MRI accelerator. Physics in Medicine and Biology, 56(15), 4815-4825.

1246

Digital Poster

Detection of submillimeter MLC leaf positioning error through log files analysis using Mobius3D

Nina Cavalli 1 , Elisa Bonanno 1 , Giuseppina Borzì 1 , Alessia D'Anna 2 , Martina Pace 1 , Giuseppe Stella 2 , Lucia Zirone 1 , Carmelo Marino 1 1 Humanitas, Medical Physics, Catania, Italy. 2 University of Catania, Department of Physics and Astronomy E. Majorana, Catania, Italy

Purpose/Objective:

With the purpose to establish the strength of our calculation based pre-treatment patient Quality Assurance (QA) method for HyperArc (HA) treatments, we checked the ability of Mobius 3D system to detect intentional errors ≤ 1mm related to the high definition MLC position through the log files analysis in MobiusFX (MFX) Module.

Material/Methods: