Results 181 to 190 of about 4,632 (208)
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Technical Note: An hybrid parallel implementation for EGSnrc Monte Carlo user codes
Medical Physics, 2018PurposeThe purpose of this study was to present a parallel solution for the EGSnrc Monte Carlo code system combining MPI and OpenMP programming models as an alternative to the provided implementation, based on the use of a batch‐queueing system (BQS).MethodsRelying on a previous implementation based on OpenMP by E. Doerner and P. Caprile [Med. Phys. 44,
Doerner, Edgardo +1 more
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Optimization of dual electron multileaf collimator materials by use of EGSnrc
Radiological Physics and Technology, 2010A dual electron multileaf collimator (eMLC) has recently been proposed and ascertained to be effective in the collimation of therapy electron beams. The EGSnrc Monte Carlo code has been used in the optimization of the dual eMLC by simulation of the Varian 2100C medical linear accelerator with the applicator completely replaced by the dual eMLC, and ...
Samuel O, Inyang, Alan C, Chamberlain
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Physics in Medicine and Biology, 2018
A Fano cavity test was performed for four general-purpose Monte Carlo codes, EGSnrc, PENELOPE, MCNP6 and Geant4 to evaluate the accuracy of their electron transport algorithms in magnetic fields.
Jaegi Lee +4 more
semanticscholar +1 more source
A Fano cavity test was performed for four general-purpose Monte Carlo codes, EGSnrc, PENELOPE, MCNP6 and Geant4 to evaluate the accuracy of their electron transport algorithms in magnetic fields.
Jaegi Lee +4 more
semanticscholar +1 more source
EGSnrc Monte Carlo calculated dosimetry parameters for and brachytherapy sources
Medical Physics, 2008This study presents the results of EGSnrc Monte Carlo calculations of the dose distribution surrounding a high dose rate brachytherapy source and 14 high dose rate and pulsed dose rate brachytherapy sources. Energy‐weighted spectra of emitted photons, a full set of TG‐43 dosimetry parameters, along‐away dose tables, and a description of the materials
R. E. P. Taylor, D. W. O. Rogers
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Radiation Physics and Chemistry, 2019
The present work aims to calculate Hp(3) conversion coefficients from air Kerma for mono energetic photons (from 10 to 10 MeV) using EGSnrc and MCNP6 Monte Carlo codes.
T. E. Bardouni +6 more
semanticscholar +1 more source
The present work aims to calculate Hp(3) conversion coefficients from air Kerma for mono energetic photons (from 10 to 10 MeV) using EGSnrc and MCNP6 Monte Carlo codes.
T. E. Bardouni +6 more
semanticscholar +1 more source
Applied Radiation and Isotopes, 2019
This study aims for calculating a new set of the personal dose equivalent conversion coefficients Hp(d)/Φ when d = 0.07, 3, and 10 mm, for mono-energetic electron beams ranged from 0.06 MeV to 50 MeV for Hp(0.07), from 0.7 MeV to 50 MeV for Hp(3) and ...
H. Al Kanti +3 more
semanticscholar +1 more source
This study aims for calculating a new set of the personal dose equivalent conversion coefficients Hp(d)/Φ when d = 0.07, 3, and 10 mm, for mono-energetic electron beams ranged from 0.06 MeV to 50 MeV for Hp(0.07), from 0.7 MeV to 50 MeV for Hp(3) and ...
H. Al Kanti +3 more
semanticscholar +1 more source
Monte Carlo simulation of backscatter from lead for clinical electron beams using EGSnrc
Medical Physics, 2008In electron radiotherapy of superficial lesions in the eyelid, lip, buccal mucosa, ear, and nose, backscattered electrons are produced from the lead shield used to protect the critical tissue underneath the tumor. In this study, the backscattered electrons, produced by clinical electron beams using a Varian 21 EX linear accelerator, were studied using ...
James C L, Chow, Grigor N, Grigorov
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Benchmarking BrachyDose: Voxel based EGSnrc Monte Carlo calculations of TG‐43 dosimetry parameters
Medical Physics, 2007In this study, BrachyDose, a recently developed EGSnrc Monte Carlo code for rapid brachytherapy dose calculations, has been benchmarked by reproducing previously published dosimetry parameters for three brachytherapy seeds with varied internal structure and encapsulation.
R E P, Taylor, G, Yegin, D W O, Rogers
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Technical Note: EGSnrc‐based dosimetric study of the BEBIG HDR brachytherapy sources
Medical Physics, 2010Purpose:The purpose of this work is to calculate two‐dimensional (2D) dose rate distributions around the BEBIG (Eckert & Ziegler, BEBIG GmbH, Germany) models GK60M21 (old) and Co0.A86 (new) high dose rate brachytherapy sources in an unbounded liquid water phantom.
T. Palani Selvam, Subhalaxmi Bhola
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Physics in Medicine and Biology, 2013
Following the proposal by several groups to integrate magnetic resonance imaging (MRI) with radiation therapy, much attention has been afforded to examining the impact of strong (on the order of a Tesla) transverse magnetic fields on photon dose distributions.
Y M, Yang, B, Bednarz
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Following the proposal by several groups to integrate magnetic resonance imaging (MRI) with radiation therapy, much attention has been afforded to examining the impact of strong (on the order of a Tesla) transverse magnetic fields on photon dose distributions.
Y M, Yang, B, Bednarz
openaire +2 more sources