Results 11 to 20 of about 1,765 (182)

Optimization of variance reduction techniques used in EGSnrc Monte Carlo Codes

Journal of Medical Physics, 2018
Monte Carlo (MC) simulations are often used in calculations of radiation transport to enable accurate prediction of radiation-dose, even though the computation is relatively time-consuming.
Sangeetha Shanmugasundaram, Sureka Chandrasekaran   +1 more
doaj   +4 more sources

Monte Carlo Simulation for the Radixact™ Tomotherapy Linac Using EGSnrc [PDF]

Journal of Medical Physics
Purpose: When exact information regarding the treatment head and initial electron beam is available, the Monte Carlo (MC) approach can properly simulate any linear accelerator. However, manufacturers seldom offer information such as the incident electron
Danial Seifi Makrani, Hassan Ali Nedaei, Ghazale Geraily, Alireza Khorami-Moghaddam, Nooshin Banaee, Hussam Jassim   +5 more
doaj   +4 more sources

Electron Impact Ionization in EGSnrc [PDF]

, 2018
Knowledge of the x-ray spectra enables system designers to predict patient dose accurately and develop better methods to reduce patient dose. Consequently, it is important to correctly implement these cross sections within Monte Carlo (MC) codes, such as
Lukhumaidze, Leila
openaire   +2 more sources

Exposure computational models with voxel phantoms coupled to EGSnrc Monte Carlo code [PDF]

Brazilian Journal of Radiation Sciences, 2023
In computational dosimetry of ionizing radiation, the energy deposited in radiosensitive organs and tissues is evaluated when an anthropomorphic simulator (phantom) is irradiated using Exposure Computational Models (ECMs).
José Wilson Vieira, Viriato Leal Neto, Pedro Henrique Avelino de Andrade, Alex Cristóvão Holanda de Oliveira, Vanildo Júnior de Melo Lima, Isabelle Viviane Batista de Lacerda, Luís Rodrigo Dandrada, Arykerne Nascimento Casado da Silva, William de Souza Santos, Ivan Eufrázio de Santana, Whoody Alem Wanderley Araripe Farias, Larissa Cristina Silva dos Santos, Fernanda Gonçalves Oliveira, Fernando Roberto de Andrade Lima   +13 more
doaj   +2 more sources

Implementation of a Tetrahedral Mesh Phantom Geometry Library for EGSnrc

, 2022
The implementation of a general-purpose tetrahedral mesh phantom geometry library for the Monte Carlo radiation transport code EGSnrc is described. Recently, tetrahedral mesh geometries have been proposed as standard reference phantoms to advance the state of the art over rectilinear voxel phantoms.
Orok, Maxwell
openaire   +3 more sources

Design and validation of a deep learning GAN for predicting ¹ ⁷ ⁷Lu dose voxel kernels using GATE/GEANT4 Monte Carlo and IDAC-Dose 2.1 in phantom dosimetry. [PDF]

J Appl Clin Med Phys
Abstract Background The rapid evolution of deep learning (DL), particularly the emergence of generative adversarial networks (GANs) has demonstrated strong potential for generating high‐resolution, voxel‐level dosimetric data. However, GAN‐based approaches have not yet been broadly applied to the generation of tissue‐specific dose voxel kernels (DVKs ...
Kapis OE, Kaniu MI, Giuseppe I, Angeyo HK.   +3 more
europepmc   +2 more sources

Clinical performance of a shielded diode for small field relative dosimetry in a 1.5 T MRI-linac using measurements and simulations. [PDF]

Med Phys
Abstract Background Small field dosimetry on magnetic‐resonance (MR) guided linear accelerators (linacs) has become increasingly more important for accurate beam modeling due to the increase in the number of patients and variety of disease sites treated on MR‐linacs such as those with small fields.
Ferris WS, Czarnecki D, St-Aubin JJ, Hyer DE.   +3 more
europepmc   +2 more sources

Monte Carlo Model Validation of 6MV Beam of OMID, the First Iranian Linear Accelerator [PDF]

Journal of Medical Signals and Sensors
Monte Carlo (MC) techniques are regarded as an accurate method to simulate the dose calculation in radiotherapy for many years. The present paper aims to validate the simulated model of the 6-MV beam of OMID linear accelerator (BEHYAAR Company) by EGSnrc
Mohammad Amin Abdoli, Maryam Hassanvand, Navid Nejatbakhsh   +2 more
doaj   +2 more sources

Evaluation of RADIANCE Monte Carlo algorithm for treatment planning in electron based Intraoperative Radiotherapy (IOERT) [PDF]

Zeitschrift für Medizinische Physik
Purpose: To perform experimental as well as independent Monte Carlo (MC) evaluation of the MC algorithm implemented in RADIANCE version 4.0.8, a dedicated treatment planning system (TPS) for 3D electron dose calculations in intraoperative radiation ...
Charoula Iliaskou, Giulio Rossi, Ilias Sachpazidis, Vasilios Boronikolas, Mark Gainey, Dimos Baltas   +5 more
doaj   +2 more sources

Validation study of voxel phantom monte carlo simulations with EGSnrc C++ class library

Brazilian Journal of Radiation Sciences, 2019
The aim of this work is to validate an in-house tool which writes voxel phantoms input files according to EGSnrc C++ class library (egspp) for Monte Carlo simulations.
Lucas Paixão, Bruno Melo Mendes, Telma Cristina Ferrera Fonseca   +2 more
doaj   +3 more sources