Development and evaluation of a GEANT4‐based Monte Carlo Model of a 0.35 T MR‐guided radiation therapy (MRgRT) linear accelerator

AU Khan, EA Simiele, R Lotey, LA DeWerd… - Medical …, 2021 - Wiley Online Library
Purpose The aim of this work was to develop and benchmark a magnetic resonance (MR)‐
guided linear accelerator head model using the GEANT4 Monte Carlo (MC) code. The …

Evaluation of a commercial MRI Linac based Monte Carlo dose calculation algorithm with geant 4

SB Ahmad, A Sarfehnia, MR Paudel, A Kim… - Medical …, 2016 - Wiley Online Library
Purpose: This paper provides a comparison between a fast, commercial, in‐patient Monte
Carlo dose calculation algorithm (GPUMCD) and geant4. It also evaluates the dosimetric …

A GPU‐accelerated Monte Carlo dose calculation platform and its application toward validating an MRI‐guided radiation therapy beam model

Y Wang, TR Mazur, O Green, Y Hu, H Li… - Medical …, 2016 - Wiley Online Library
Purpose: The clinical commissioning of IMRT subject to a magnetic field is challenging. The
purpose of this work is to develop a GPU‐accelerated Monte Carlo dose calculation platform …

Extension and validation of a GPU‐Monte Carlo dose engine gDPM for 1.5 T MR‐LINAC online independent dose verification

Y Li, S Ding, B Wang, H Liu, X Huang… - Medical Physics, 2021 - Wiley Online Library
Purpose To extend and validate the accuracy and efficiency of a graphics processing unit
(GPU)‐Monte Carlo dose engine for Elekta Unity 1.5 T Magnetic Resonance‐Linear …

Development and validation of a 1.5 T MR‐Linac full accelerator head and cryostat model for Monte Carlo dose simulations

M Friedel, M Nachbar, D Mönnich, O Dohm… - Medical …, 2019 - Wiley Online Library
Purpose To develop, implement, and validate a full 1.5 T/7 MV magnetic resonance (MR)‐
Linac accelerator head and cryostat model in EGSnrc for high precision dose calculations …

Geant4 Monte Carlo investigation of the magnetic field effect on dose distributions in low-density regions in magnetic resonance image-guided radiation therapy

M Yano, F Araki, T Ohno - Physica Medica, 2019 - Elsevier
It is necessary to evaluate the effect of the presence of a magnetic field when treating lung
tumors with MRIgRT. In this study, the effect of transverse and longitudinal magnetic fields …

Optical imaging method to quantify spatial dose variation due to the electron return effect in an MR‐linac

JM Andreozzi, P Brůža, J Cammin, BW Pogue… - Medical …, 2020 - Wiley Online Library
Purpose Treatment planning systems (TPSs) for MR‐linacs must employ Monte Carlo‐
based simulations of dose deposition to model the effects of the primary magnetic field on …

[HTML][HTML] Implementation of a dose calculation algorithm based on Monte Carlo simulations for treatment planning towards MRI guided ion beam therapy

F Padilla-Cabal, AF Resch, D Georg, H Fuchs - Physica Medica, 2020 - Elsevier
Magnetic resonance guidance in particle therapy has the potential to improve the current
performance of clinical workflows. However, the presence of magnetic fields challenges the …

Commissioning a beam line for MR‐guided particle therapy assisted by in silico methods

H Fuchs, F Padilla‐Cabal, BM Oborn… - Medical Physics, 2023 - Wiley Online Library
Background Radiation therapy is continuously moving towards more precise dose delivery.
The combination of online MR imaging and particle therapy, for example, radiation therapy …

Sensitive volume effects on Monte Carlo calculated ion chamber response in magnetic fields

VN Malkov, DWO Rogers - Medical Physics, 2017 - Wiley Online Library
Purpose The development of magnetic resonance‐guided radiation therapy (MR g RT)
necessitates accurate Monte Carlo (MC) models of ion chambers for computing ion chamber …