Evaluation of cross-calibration based on TRS-398 and TG-51 to modified electron beam calibration methods
Online veröffentlicht: 28. Aug. 2025
Seitenbereich: 211 - 218
Eingereicht: 14. Dez. 2024
Akzeptiert: 02. Juni 2025
DOI: https://doi.org/10.2478/pjmpe-2025-0024
Schlüsselwörter
© 2025 Vibol Ban et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Introduction
Accurate electron beam dosimetry is crucial for effective radiotherapy treatment. This study aimed to validate modified electron beam calibration methods through a comprehensive cross-calibration analysis against the established IAEA TRS-398 and AAPM TG-51 protocols.
Materials and methods
A Varian Trilogy linac with electron beam energy of 6, 9, 12, 15, and 18 MeV was used to perform dosimetric assessments using cylindrical (FC65-G and CC13) and parallel-plate (PPC40) ion chambers. The sequential method was employed for cross-calibration at 18 MeV, with each chamber alternatively serving as the reference and field chambers according to TRS-398 (yielding calibration correction factor
Results
For modified calibration methods, the values of
Conclusions
The study highlights the importance of cross-calibration in ensuring the accuracy and reliability of modified electron beam calibration methods. These findings suggest that the modified approaches can serve as effective alternatives to traditional protocols, potentially enhancing dosimetric precision and flexibility in clinical radiotherapy settings.