Results 71 to 80 of about 5,690 (213)
Medical Physics, Volume 52, Issue 7, July 2025.Abstract Background The choice of nuclear interaction models in Monte Carlo simulations affects the dose calculation accuracy for light ion beam therapy. Purpose This study aimed to evaluate the dose calculation accuracy and simulation time of three GATE‐RTiON/Geant4 physics lists for therapeutic carbon ion beams, assessing their suitability for ...
Yihan Jia +6 more
wiley +1 more source
Brazilian Journal of Radiation Sciences, 2015 Os aplicadores oftálmicos COC com fonte emissoras beta de 106Ru/106Rh são utilizados no tratamento de tumores intraoculares próximos ao nervo óptico. Neste tipo de tratamento é muito importante conhecer as distribuições de dose, de modo a proporcionar a ...
nilseia aparecida barbosa
doaj +1 more source
Journal of Biomedical Physics and Engineering, 2019 Background: In recent years, there has been an increased interest toward non-lead radiation shields consisting of small-sized filler particles doped into polymer matrices.
F. Kazemi +2 more
semanticscholar +1 more source
The small-angle neutron scattering extension in MCNPX and the SANS cross section for nanodiamonds
, 2020 Detonation nanodiamonds provide an intriguing prospect for the development of a very cold neutron (VCN) source or as a high albedo material for VCN reflection helping to control leakage of cold and very cold neutrons in a moderator.
K. Grammer, F. Gallmeier
semanticscholar +1 more source
Medical Physics, Volume 52, Issue 7, July 2025.Abstract Background Radiobiological data suggests variations in relative biological effectiveness (RBE) between clinically used photon‐based sources. A microdosimetric formalism using Monte Carlo (MC) methods can mechanistically describe the photon RBE.
Mirta Dumančić +6 more
wiley +1 more source
Counterintuitive MCNPX results for scintillator surface roughness effect [PDF]
SPIE Proceedings, 2012 We performed a number of comparative MCNPX simulations of gamma energy depositions of scintillation crystals with smooth and rough surfaces. In the study, nine surface patterns (8 micro-roughness + 1 smooth) were coupled with eight common scintillation crystals for a total of 72 possible combinations.
Ding Yuan, Paul Guss
openaire +1 more source
Plant, Cell &Environment, Volume 47, Issue 10, Page 3882-3898, October 2024.Abstract Ionising γ radiation produces reactive oxygen species by water radiolysis, providing an interesting model approach for studying oxidative stress in plants. Three‐week old plants of Arabidopsis thaliana were exposed to a low dose rate (25 mGy h−1) of γ radiation for up to 21 days. This treatment had no effect on plant growth and morphology, but
Brigitte Ksas +5 more
wiley +1 more source
The MCNPX Monte Carlo Radiation Transport Code
AIP Conference Proceedings, 2007 MCNPX (Monte Carlo N‐Particle eXtended) is a general‐purpose Monte Carlo radiation transport code with three‐dimensional geometry and continuous‐energy transport of 34 particles and light ions. It contains flexible source and tally options, interactive graphics, and support for both sequential and multi‐processing computer platforms.
Laurie S. Waters +7 more
openaire +2 more sources
Medical Physics, Volume 51, Issue 8, Page 5604-5617, August 2024.Abstract Background With recent interest in patient‐specific dosimetry for radiopharmaceutical therapy (RPT) and selective internal radiation therapy (SIRT), an increasing number of voxel‐based algorithms are being evaluated. Monte Carlo (MC) radiation transport, generally considered to be the most accurate among different methods for voxel‐level ...
Gunjan Kayal +7 more
wiley +1 more source
Brazilian Journal of Radiation Sciences, 2017 The objective of this work was to develop and validate Internal Dosimetry Protocols (IDP) using the ICRP 110 reference voxelized phantoms (RCP_AF and RCP_AM). The reference phantoms were implemented to run on MCNPx.
Bruno Melo Mendes +3 more
doaj +1 more source