Comparison between PRIMO and EGSnrc Monte Carlo models of the Varian True Beam linear accelerator

Aamri, Hussin and Fielding, Andrew and Aamry, Ali and Sulieman, Abdelmoneim and Tamam, Nissren and Alkhorayef, Mohammed and Bradley, D.A. * (2021) Comparison between PRIMO and EGSnrc Monte Carlo models of the Varian True Beam linear accelerator. Radiation Physics and Chemistry, 178. p. 109013. ISSN 0969-806X

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The study objectives were to simulate a 6 MV flattening filter-free (FFF) photon beam of a TrueBeam Varian LINAC, using the PRIMO code. The depth-dose profiles for various jaw open fields and cross-beam profiles for various depths inside water phantoms were determined using PRIMO simulations and were compared with the EGSnrc simulation results. A 93% match between both codes has generally been obtained, with a systematic variation in agreement between the two models that increases with field size. The closest agreement, to within 94%, was obtained for a 6 × 6 cm2 jaw open field at 5.0 cm and 10.0 cm depths, better at 10- than at 5.0 cm depth. The effects of how scatter is modelled has been shown to result in the differences.

Item Type: Article
Uncontrolled Keywords: Monte Carlo simulation; Flattening-filter free (FFF); Linear accelerator (LINAC); EGSnrc; Dose in build-up region; PRIMO Code.
Subjects: R Medicine > R Medicine (General) > R895-920 Medical Physics/Medical Radiology
Divisions: Others > Non Sunway Academics
Sunway University > School of Medical and Life Sciences [formerly School of Healthcare and Medical Sciences until 2020] > Centre of Biomedical Physics [wef 2021 changed to Research Centre for Applied Physics and Radiation Technologies and moved to SET ]
Depositing User: Dr Janaki Sinnasamy
Related URLs:
Date Deposited: 11 Feb 2021 08:21
Last Modified: 02 Nov 2021 02:03

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