ESTRO 2024 - Abstract Book

S3299

Physics - Detectors, dose measurement and phantoms

ESTRO 2024

[3] Richter C. et al. “First clinical application of a prompt gamma based in vivo proton range verification system”, Radiotherapy and Oncology, Volume 118, Issue 2, 2016, Pages 232-237, ISSN 0167-8140, https://doi.org/10.1016/j.radonc.2016.01.004.

[4] Missaglia A. et al. “Prompt-gamma fall-off estimation with C-ion irradiation at clinical energies, using a knife-edge slit camera: A Monte Carlo study”. Phys Med. 2023 Mar;107:102554. doi: 10.1016/j.ejmp.2023.102554.

[5] Battistoni G. et al. “Overview of the FLUKA code”, Annals of Nuclear Energy, Volume 82, 2015, Pages 10-18, ISSN 0306-4549, https://doi.org/10.1016/j.anucene.2014.11.007.

[6] Rossi S. “The status of CNAO” ,The European Physical Journal Plus (2011), https://doi.org/10.1140/epjp/i2011 11078-8.

[7] L. Buonanno et al. “GAMMA: A 16-Channel Spectroscopic ASIC for SiPMs Readout With 84-dB Dynamic Range”. In: IEEE Transactions on Nuclear Science (2021).

1933

Digital Poster

High-resolution Diode array vs film for QA of trigeminal neuralgia treatments with Cyberknife

David Sevillano 1,2 , Juan David García-Fuentes 1 , Rafael Colmenares 1 , Miguel Cámara 1 , Belén Capuz 1 , Rafael Morís 1 , Pablo Galiano 1 , Sandra Williamson 1 , Rubén Chillida 1 , Carlos Rodríguez-Manzaneque 1 , María José Béjar 1 , Daniel Prieto 1 , Feliciano García-Vicente 1 1 H. U. Ramón y Cajal, Medical Physics, Madrid, Spain. 2 Universidad Complutense de Madrid, Department of Radiology,Rehabilitation and Physiotherapy, Madrid, Spain

Purpose/Objective:

To evaluate the performance of the SRS MapCheck (Sun Nuclear, USA) diode array in Patient Specific QA (PSQA) of Cyberknife trigeminal neuralgia treatments compared to that with radiochromic films.

Material/Methods:

PSQA of eleven trigeminal neuralgia treatments with both SRS MapCheck and film were included in this study. From both methods, γ2%/1mm and displacement between measured and planned dose distributions were obtained.

Film based PSQA was performed with Ball Cube films into the E2E Head phantom provided with the Cyberknife system. To allow for registration between films and planned distributions, dose matrices were modified to allow identification of film corners. RIT113 software (Radiological Imaging Technology, USA) was used for registration and Gamma index analysis. Geometrical errors measured with film were obtained with an in-house software developed to calculate these errors based on horizontal and vertical profiles of the dose distribution of each plane obtained