Results 11 to 20 of about 884 (159)

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

Attix free-air chamber correction factors computed using EGSnrc. [PDF]

Med Phys
AbstractBackgroundA cylindrical free‐air chamber, the Attix FAC, is used for absolute air‐kerma measurements of low‐energy photon beams at the University of Wisconsin Medical Radiation Research Center. Correction factors for air‐kerma measurements of specific beams were determined in the 1990s.
Stasko JT, Culberson WS.
europepmc   +3 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

Commissioning and validation of the Elekta One GPUMCD algorithm for an Elekta VersaHD linear accelerator. [PDF]

J Appl Clin Med Phys
Abstract Purpose The purpose of this work was to commission and validate GPUMCD, a GPU‐accelerated Monte Carlo dose calculation engine for c‐arm Elekta linear accelerators (linac). This algorithm was recently released for clinical implementation in the Elekta One Treatment Planning System (v6.2.3, EOP). Methods A GPUMCD beam model was generated for all
Rusu SD, Smith BR, Hutchinson GH, Jen JH, Hyer DE.   +4 more
europepmc   +2 more sources

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   +3 more sources

Design and evaluation of structural shielding of a typical radiotherapy facility using egsnrc monte carlo code

Journal of Medical Physics, 2022
Purpose: This study aimed to evaluate the shielding integrity of a typical radiotherapy facility using the Monte Carlo (MC) method. Materials and Methods: EGSnrc MC code was used to design a radiotherapy bunker with appropriate materials and thicknesses.
Zaccheaus Ayo Ibitoye, Margret Bose Adedokun, Temitope Aminat Orotoye, Godwin Bassey Udo   +3 more
doaj   +3 more sources

Monte Carlo dosimetry of the 60Co sources of a new GZP3 HDR afterloading system [PDF]

Radiation Oncology, 2023
Background The purpose of this work was to obtain the dosimetric parameters of the new GZP3 60Co high-dose-rate afterloading system launched by the Nuclear Power Institute of China, which is comprised of two different 60Co sources.
Junxiang Wu, Shengwei Kang, Pei Wang, Jie Li, Xianliang Wang   +4 more
doaj   +2 more sources

An Efficiency Studying of an Ion Chamber Simulation Using Vriance Reduction Techniques with EGSnrc [PDF]

Journal of Biomedical Physics and Engineering, 2019
Background: Radiotherapy is an important technique of cancer treatment using ionizing radiation. The determination of total dose in reference conditions is an important contribution to uncertainty that could achieve 2%.
Campos L. T., Magalhães L. A., de Almeida C. E. V.   +2 more
doaj   +3 more sources