https://doi.org/10.1140/epjp/s13360-025-06091-9
Regular Article
Dosimetric analysis of true beam linear accelerators and assessment of dosimetry of photon beams for various treatment parameters
1
Radiation Physics Lab, Department of Physics, COMSATS University Islamabad, 45550, Islamabad, Pakistan
2
Department of Mathematics, Physics and Statistics, Faculty of Natural Sciences, University of Guyana, 101110, Georgetown, South America, Guyana
3
Department of Physics, Islamia College Peshawar, 25120, Peshawar, Pakistan
4
NORI Cancer Hospital, Islamabad, Pakistan
5
Department of Physics, University of Idaho, Moscow, Idaho, USA
6
Department of Zoology, College of Science, King Saud University, P.O. 2455, 11451, Riyadh, Saudi Arabia
7
Department of Physics, Abdul Wali Khan University Mardan, 23200, Mardan, Pakistan
a
hannan.younis@comsats.edu.pk
b
ajaz@awkum.edu.pk
Received:
21
December
2024
Accepted:
4
February
2025
Published online:
24
February
2025
The True beam linear accelerator is a state-of-the-art device widely used in cancer treatment for its ability to deliver flattening-filter-free (FFF) and flattened photon beams. Despite its clinical significance, detailed information on its dosimetric characteristics remains limited. This study systematically evaluated dosimetric parameters for photon beam energies of 6 MV, 6 MV FFF, and 15 MV using high-resolution diode detectors and ion chambers. Measurements were conducted at a source-to-surface distance of 100 cm for field sizes ranging from 10 × 10 cm2 to 40 × 40 cm2 and depths of Dmax, 5 cm, 10 cm, 20 cm, and 30 cm in water. Key metrics, including percentage depth doses (PDDs) and beam profiles, were analyzed to assess the effect of beam energy, field size, and depth on dosimetry. Comparisons of measured data from NORI Cancer Hospital and Shaukat Khanum Memorial Hospital demonstrated consistent and accurate performance across systems. These findings provide valuable insights into the dosimetric behavior of TrueBeam accelerators, contributing to the optimization of treatment protocols and ensuring improved patient outcomes.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
