Commissioning and verification of a 3D Monte Carlo independent calculation software for O-ring linac systems. [PDF]
J Appl Clin Med PhysAbstract Background O‐ring linac systems improve radiotherapy efficiency but require rigorous pretreatment verification due to increased delivery uncertainty in IMRT/VMAT. Existing methods face limitations: measurement‐based approaches incur setup errors, while calculation‐based methods (e.g., Monte Carlo) need machine‐specific validation per AAPM TG ...
Meng X +9 more
europepmc +2 more sources
Analysis and evaluation of secondary photons originated in jaws as contamination particles at the phantom surface [PDF]
Ядерна фізика та енергетика, 2020 The present work is focused on the study of the geometry and material of a beam modifier (jaws), which is crucial for Linac improvement by reducing secondary photons emergent from it.
Mohamed Bencheikh +2 more
doaj +1 more source
High spatial resolution dosimetry for radiation oncology with "MagicPlates," a new 976-pixel monolithic silicon detector. [PDF]
J Appl Clin Med PhysAbstract Purpose We introduce the next generation of “MagicPlate” 2D monolithic pixelated semiconductor detectors – MagicPlate‐976 (MP976). It features a larger array area, higher spatial resolution, and does not require external triggering. We perform a comprehensive characterization for small‐field steep‐dose‐gradient dosimetry applications in ...
Filipev I +13 more
europepmc +2 more sources
Enhancing targeted doses: Low-energy photon lipiodol-enhanced radiotherapy (LEPERT) for liver cancer patients. [PDF]
J Appl Clin Med PhysAbstract Objectives This study proposes a novel approach, “Low‐energy photon Lipiodol‐Enhanced Radiotherapy” (LEPERT), for patients with liver cancer. Moreover, we evaluate the dose difference of the conventional treatment planning with 10 MV X‐ray beam (MV‐plan) and LEPERT.
Kawahara D.
europepmc +2 more sources
Beam collimation and filtration optimization for a novel orthovoltage radiotherapy system. [PDF]
Med PhysAbstract Background The inaccessibility of clinical linear accelerators in low‐ and middle‐income countries creates a need for low‐cost alternatives. Kilovoltage (kV) x‐ray tubes have shown promise as a source that could meet this need. However, performing radiotherapy with a kV x‐ray tube has numerous difficulties, including high skin dose, rapid dose
Clements N +4 more
europepmc +2 more sources
Monte Carlo-based analysis of the photon beam fluence with air gap thickness between Linac head exit window and patient’s skin in radiotherapy treatments [PDF]
Ядерна фізика та енергетика, 2020 Linear accelerators (Linac) are used in radiation therapy treatment and its technology improvement ensures high dosimetry quality that should be conserved for high radiotherapy efficiency.
Mohamed Bencheikh +2 more
doaj +1 more source
Journal of Taibah University for Science, 2023 The aim of this study is to investigate the effects of these Variance reduction techniques on photon fluence and dose calculation efficiency. Different VRTs available in the BEAMnrc code were used to investigate the simulation efficiency for a 6 MV ...
Turki Almatani
doaj +1 more source
A Monte Carlo model of an agility head for a 10-MV photon beam
Journal of Taibah University for Science, 2022 Objective: Modelling linear accelerator (linac) photon beams using the Monte Carlo (MC) technique is presently the most precise technique with which to calculate radiotherapy beam data.
Turki Almatani +2 more
doaj +1 more source
Evaluation of the RtDosePlan Treatment Planning System using Radiochromic Film and Monte Carlo Simulation [PDF]
Iranian Journal of Medical Physics, 2010 Introduction: GafChromic EBT films are one of the self-developing and modern films commercially available for dosimetric verification of treatment planning systems (TPSs).
Micaeil Mollazadeh +4 more
doaj +1 more source
Journal of Medical Physics, 2018 Purpose: Monte Carlo simulation was carried out for a 6 MV flattening filter-free (FFF) indigenously developed linear accelerator (linac) using the BEAMnrc user-code of the EGSnrc code system. The model was benchmarked against the measurements.
Bibekananda Mishra +4 more
doaj +1 more source