ESTRO 2024 - Abstract Book

S4770

Physics - Quality assurance and auditing

ESTRO 2024

Conclusion:

We have successfully evaluated the FT of DVH and showed that there is a critical point where harmonics start disappearing. At that point, the height or the ratio of height to first harmonics provides unique opportunity as a measure of the quality of the DVH. This analysis was performed with HI only but additional analysis with other metrics is warranted.

Keywords: DVH, Fourier transformation, Plan quality

References:

1. Das IJ, Sanfilippo NJ, Fogliata A, Luca Cozzi L. Intensity Modulated Radiation Therapy: A Clinical Overview: IOP Publishing, Bristol, UK; 2020.

2. Niemierko A, Goitein M. Implementation of a model for estimating tumor control probability for an inhomogeneously irradiated tumor. Radiother Oncol 1993;29:140-147.

3. ICRU Report 83. Prescribing, Recording, and Reporting Intensity-Modulated Photon-Beam Therapy (IMRT)(ICRU Report 83). Bethesda, MD: International Commission on Radiation Units and Measurements; 2010.

4. ICRU Report 91. Prescribing Recording, and Reporting of Stereotactic Treatments with Small Photon Beams. Bethesda, MD: International Commission on Radiation Units and Measurements; 2017.

5. Das IJ, Yadav P, Andersen AD, Chen ZJ, et al. Dose prescription and reporting in stereotactic body radiotherapy: A multi-institutional study. Radiother Oncol 2023;182:109571.

746

Digital Poster

Optimisation of the DLG in Mobius3D independent verification software for Ethos and TrueBeam linacs

Arun Patel 1 , Miguel Martinez Albaladejo 2 , Vicente Puchades Puchades 2 , David Ramos Amores 2 , Jonathan Suárez Arteaga 2 , Aitor Ortega González 2 , Alfredo Serna Berna 2 1 The Shrewsbury and Telford Hospital NHS Trust, Medical Physics Department, Shrewsbury, United Kingdom. 2 Complejo Hospitalario Universitario de Cartagena, Servicio de Radiofísica y Protección Radiológica, Cartagena, Spain

Purpose/Objective: