Results 141 to 150 of about 1,530,338 (157)

Increasing efficiency of BEAMnrc‐simulated Co‐60 beams using directional source biasing

Medical Physics, 2015
This study describes the implementation of a directional source biasing (DSB) scheme for efficiently simulating Cobalt-60 treatment heads using the BEAMnrc Monte Carlo code.
Walters, B. R. B.
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Electron Beam Characteristics and Dose Profiles of 9 MeV Varian Clinac 2100C/D Linear Accelerator Using OMEGA BEAMnrc Code System

مجلة العلوم الاساسية و التطبيقية, 2022
Treatment planning using Monte Carlo (MC) code is widely used to improve different equipments used in radiation therapy. This real simulation technique is becoming more practical in Medical Physics, particularly with the rapid development of computer technology.
Ibrahim E. Othman, Rania Saad Khalifa, Amina Elsariti   +2 more
openaire   +1 more source

Study of the dosimetric properties of an unflattened 6-MV photon beam by using the BEAMnrc code

Journal of the Korean Physical Society, 2016
This study investigated the basic dosimetric properties of a Flattening-filter-free 6-MV photon beam based on the unique performance model of the Varian Clinic 600 linac operated with and without a flattening filter. Dosimetric features, including the central-axis absorbed dose, the beam profiles and the photon and electron fluences were calculated for
Ankit Kajaria, Neeraj Sharma, Shiru Sharma, Satyajit Pradhan, Abhijit Mandal, Lalit. M. Aggarwal   +5 more
openaire   +1 more source

SU-E-T-33: Prediction of Exit Dose Images Using XVMC and BEAMnrc Monte Carlo Code

Medical Physics, 2012
Purpose: It has been evaluated that XVMC and BEAMnrc codes are suitable for dose calculation in patient. However, required accuracy of the codes at extended distance under scattering media is challenging. Furthermore, there is a growing importance of dose validation of complicated radiation therapy by exit dosimetry and dose reconstruction.
G Deshazer, J Yoon, J Kim, I Yeo, J Jung
openaire   +1 more source

SU‐GG‐T‐355: External Electron Beam Comparison of Monte Carlo Codes (BEAMnrc, MCNP4C) in Homogeneous Phantom and Interfaces

Medical Physics, 2008
Purpose: Understanding the limitation of the Monte Carlo codes is essential in order to avoid systematic errors in simulations, and to suggest further improvement of the codes. The purpose of this study was to simulate the treatment head of Elekta (Synergy™) linear accelerator with two different Monte Carlo codes called MCNP4C and BEAMnrc and compare ...
M Owrangi, M Masudiefar, H Nedaie, Z Anjomani, M Mosleh‐Shirazi   +4 more
openaire   +1 more source

SU‐GG‐I‐57: A Mutlidetector CT Model Using BEAMnrc/DOSXYZnrc Code for Estimating Radiation Doses: Phantom Study

Medical Physics, 2008
Purpose: Most of Monte Carlo based methods to estimate radiation dose in computed tomography (CT) were performed using MCNP or EGS codes. However, They can't really simulate the CT source, such as the x‐ray tube and the bowtie filter. The purpose of this study is to verify the feasibility of using BEAMnrc/DOSXYZnrc code to develop a real multidetector ...
CC Chiang‐Hsieh, HY Tsai, CJ Tung, TC Chao   +3 more
openaire   +1 more source

SU-E-J-21: Verification of a Monte Carlo Model of CBCT Flat Panel Detector Using BEAMnrc/EGSnrc Code

Medical Physics, 2011
Purpose: Cone beam computed tomography(CBCT) provides wide scan coverage per rotation; however, its image quality is compromised due to large amounts of scatter. In this study, we performed detailed Monte Carlo(MC) simulations of a CBCT flat panel detector to characterize scatter for the purposes of scatter correction.
S Kim, L Ren, J Jin, J Kim, B Movsas, I Chetty   +5 more
openaire   +1 more source

Monte Carlo dose calculations using MCNP4C and EGSnrc/BEAMnrc codes to study the energy dependence of the radiochromic film response to beta-emitting sources

Physics in Medicine and Biology, 2007
The energy dependence of the radiochromic film (RCF) response to beta-emitting sources was studied by dose theoretical calculations, employing the MCNP4C and EGSnrc/BEAMnrc Monte Carlo codes. Irradiations with virtual monochromatic electron sources, electron and photon clinical beams, a (32)P intravascular brachytherapy (IVB) source and other beta ...
M, Pacilio, D, Aragno, R, Rauco, S, D'Onofrio, M C, Pressello, L, Bianciardi, E, Santini   +6 more
openaire   +2 more sources

Assessment of Effect Technical Directional Bremsstrahlung Splitting (DBS) on Spectra and Parameters of Simulation with Monte carlo Method BEAMnrc Code (Study Monte Carlo)

2018
Introduction: Previous studies have shown that a Monte Carlo method for the transportations photon beam in medical linear accelerator is a good way. Strip of simulation can be used to measure the dose distribution in phantoms and patients' body. EGSnrc Code is the only code written for use in the field of radiation therapy that has many subset codes ...
babapour, Hamed, Ataei, Gholam Reza, Davoudi, Mohammad   +2 more
openaire   +1 more source

Modeling and commissioning of a Clinac 600 CD by Monte Carlo method using the BEAMnrc and DOSXYZnrc codes

2015
Junior, Reginaldo Gonçalves Leão, Oliveira, Arno Heeren De, Filho, Arnaldo Prata Mourão, Romulo Verdolin De Sousa   +3 more
openaire   +1 more source