Results 11 to 20 of about 525 (147)

Evaluation of the Electron Contamination in Photon Therapy Using BEAMnrc Code

مجله دانشکده پزشکی اصفهان, 2019
Background: Today, high-energy photon beams are widely used in the treatment of all types of cancers. However, the production of electrons as contaminants in the photon pathway provides the necessity for research in this field.
Nahid Chegeni, Seyedeh Khadijeh Hosseini, Hojjatollah Shahbazian, Maryam Hassanvand   +3 more
doaj   +3 more sources

EGSnrc/BEAMnrc-Based Monte Carlo Simulation of the Gamma Knife 4C versus MCNP Code in Homogeneous Media

Frontiers in Biomedical Technologies, 2020
Purpose: Gamma Knife is applied as a superseded tool for inaccessible lesions surgery delivering a single high dose to a well-defined target through 201 small beams. Monte Carlo simulations can be an appropriate supplementary tool to determine dosimetric
Atefeh Mahmoudi, Ghazale Geraily
doaj   +3 more sources

Monte carlo simulation of siemens oncor linear accelerator with beamnrc and dosxyznrc code

Journal of Medical Signals and Sensors, 2013
The Monte Carlo method is the most accurate method for simulation of radiation therapy equipment. The linear accelerators (linac) are currently the most widely used machines in radiation therapy centers.
Keyvan Jabbari, Hossein Saberi Anvar, Mohammad Bagher Tavakoli, Alireza Amouheidari   +3 more
doaj   +3 more sources

Feasibility study: Use of an optical scanning system to obtain 3D body surface images suitable for total skin electron therapy treatment dosimetry. [PDF]

J Appl Clin Med Phys
Abstract Background Total skin electron therapy (TSET, also known as TSE, TSI, TSEI or TSEBT) provides an effective treatment for extensive superficial lesions such as mycosis fungoides, although the standing setups and large distances used for treatment mean that comprehensive three‐dimensional (3D) dose calculations are rarely achievable clinically ...
Crowe SB, Cassim N, Luscombe J, McMahon KL, Kairn T.   +4 more
europepmc   +2 more sources

Monte Carlo simulation of a multi-leaf collimator design for telecobalt machine using BEAMnrc code

Journal of Medical Physics, 2010
This investigation aims to design a practical multi-leaf collimator (MLC) system for the cobalt teletherapy machine and check its radiation properties using the Monte Carlo (MC) method.
Ayyangar Komanduri, Kumar M, Narayan Pradush, Jesuraj Fenedit, Raju M   +4 more
doaj   +3 more sources

Evaluation of extrapolation chamber response for surface and buildup dose assessment in radiotherapy photon beams using Monte Carlo simulations. [PDF]

Med Phys
Abstract Background Surface dose assessment is essential in radiotherapy, but accurately measuring doses in the buildup region of megavoltage beams presents significant challenges. Extrapolation chambers are frequently regarded as the most suitable detectors for this purpose. Purpose To establish under what conditions extrapolation chambers can be used
Reis CQM, Muir BR, Nicolucci P, Rogers DWO.   +3 more
europepmc   +2 more sources

Field output correction factors and perturbation factor analysis for novel SunSILICON and SunSILICON P silicon diode detectors. [PDF]

J Appl Clin Med Phys
Abstract Background Field output factor measurements of clinical linear accelerators require detector‐specific corrections, due to the introduction of fluence perturbation effects by non‐water‐equivalent components of applied detectors. Purpose This study aims to determine field output correction factors for novel shielded and unshielded silicon diode ...
Schönfeld AA, Alissa M, Towle D, Murray A, Schönfeld AB, Anders TJ, Alquist E, Evrard O, Rosenwald C, Hildreth J, Flatten V, Wessing G, Habib C, Czarnecki D.   +13 more
europepmc   +2 more sources

Monte Carlo modeling of the Elekta Versa HD and patient dose calculation with EGSnrc/BEAMnrc. [PDF]

J Appl Clin Med Phys, 2022
AbstractIntroductionNumerous studies have proven the Monte Carlo method to be an accurate means of dose calculation. Although there are several commercial Monte Carlo treatment planning systems (TPSs), some clinics may not have access to these resources.
Paschal HMP, Kabat CN, Papaconstadopoulos P, Kirby NA, Myers PA, Wagner TD, Stathakis S.   +6 more
europepmc   +3 more sources

Monte Carlo modeling of the origin of contaminant electrons on a 0.5T bi-planar Linac-MR. [PDF]

Med Phys
Abstract Introduction In the last decade, hybrid linear accelerator magnetic resonance imaging (Linac‐MR) devices have evolved into FDA‐cleared clinical tools, facilitating magnetic resonance guided radiotherapy (MRgRT). The addition of a magnetic field to radiation therapy has previously demonstrated dosimetric and electron effects regardless of ...
Reynolds M, Oliver PAK, Wood T, Yip E, Tari SY, Wachowicz K, Burke B, Fallone BG.   +7 more
europepmc   +2 more sources

The dosimetric effect of photon target degradation on C-series linear accelerators using Monte Carlo simulation. [PDF]

J Appl Clin Med Phys
Abstract Background The impact of beam dosimetry changes brought on by target degradation has not been well investigated. Purpose To determine the optimal dosimetry metrics for detecting target degradation and to investigate the impact of beam dosimetry changes brought on by target degradation. Methods The EGSnrc Monte Carlo programs were used to model
Deng Y, Qiu M, Zhong J, Xiao Z.
europepmc   +2 more sources