Results 41 to 50 of about 884 (159)

Soft tissue and water substitutes for megavoltage photon beams: An EGSnrc‐based evaluation [PDF]

open access: yesJournal of Applied Clinical Medical Physics, 2016
In this work, soft‐tissue equivalence of water, polystyrene, PMMA and water equivalence of polystyrene, and PMMA has been assessed for multiple megavoltage photon beams and field sizes. EGSnrc based Monte Carlo (MC) codes, BEAMnrc and DOSXYZnrc are used for the linac head modeling and the phantom dose calculations, respectively. Percentage depth doses (
Aslam, Ambreen   +4 more
openaire   +2 more sources

Perbandingan Dosis Serap Berkas Foton 16 MV Pada Berbagai Jenis Phantom menggunakan Metode Monte Carlo - EGSnrc

open access: yesWahana Fisika: Jurnal Penelitian Fisika dan Terapannya, 2016
Telah dilakukan penelitian tentang perbandingan dosis serap berkas foton 16 MV pada berbagai jenis material phantom dengan menggunakan simulasi Monte Carlo-EGSnrc.
Ridwan Ramdani, Freddy Haryanto
doaj   +3 more sources

Evaluating the Effects of Field Size on Beam Homogeneity Coefficient in the Superficial Radiotherapy Machine Using Empirical Method and Simulation [PDF]

open access: yesIranian Journal of Medical Physics, 2012
Introduction Superficial X-ray therapy is one of the most important treatment methods in radiotherapy especially in the treatment of superficial skin lesions (Up to 300 kVp).
Hamed Babapour   +3 more
doaj   +1 more source

Determination of dosimetric dependence for effective atomic number of LDR brachytherapy seed capsule by Monte Carlo simulation

open access: yesNuclear Engineering and Technology, 2023
Brachytherapy is a special case of radiotherapy. It should be arranged according to some principles in medical radiation applications and radiation physics.
Berkay Camgöz, Dilara Tarım
doaj   +1 more source

Performance evaluation of a new type of commercial silicon detectors for photon beam dosimetry

open access: yesJournal of Applied Clinical Medical Physics, Volume 27, Issue 8, August 2026.
Abstract Background Modern radiotherapy relies on advanced treatment techniques that utilize a large number of small fields, for which maintaining dosimetric accuracy is often challenging. Most vendors have introduced microdetectors suitable for small field dosimetry. Sun Nuclear has developed two silicon diodes with a sensitive volume of 0.35 mm3 that
Indra J. Das   +2 more
wiley   +1 more source

egs++: Optimization of Simulation Transport Parameters

open access: yesJIF (Jurnal Ilmu Fisika), 2023
MC transport parameters used are common to all egs++ applications. The effect of each transport parameter need to understand to optimize the simulation process. Therefore, the purpose of this study was to investigate the efficiency of egs++ simulation for
Sitti Yani
doaj   +1 more source

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

open access: yesJournal of Applied Clinical Medical Physics, Volume 27, Issue 7, July 2026.
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 ...
Scott B. Crowe   +4 more
wiley   +1 more source

Assessing the Effect of Directional Bremsstrahlung Splitting on the Output Spectra and Parameters Using BEAMnrc Monte Carlo Simulation Package

open access: yesBiomedical Engineering and Computational Biology, 2022
Introduction: EGSnrc software package is one of the computational packages for Monte Carlo simulation in radiation therapy and has several subset codes.
Hamed Babapour   +5 more
doaj   +1 more source

Validação de um modelo computacional de acelerador linear VARIAN CLINAC 2100 utilizando o código EGSnrc para utilização em dosimetria de pequenos campos.

open access: yesBrazilian Journal of Radiation Sciences, 2018
Neste trabalho foi empregado o Método de Monte Carlo para a simulação de campos clínicos de radioterapia que serão posteriormente utilizados para a calibração de pequenos campos de radiocirurgia. O código de transporte de radiação utilizado foi o EGSnrc
Reginaldo Gonçalves Leão Jr   +4 more
doaj   +1 more source

Beyond TG‑43: A PRISMA‐based systematic review on model‐based dose‐calculation algorithms in brachytherapy

open access: yesJournal of Applied Clinical Medical Physics, Volume 27, Issue 5, May 2026.
Abstract Background and purpose The AAPM TG‐43 formalism has long served as the clinical standard for brachytherapy dose calculation but assumes a homogeneous water equivalent medium, overlooking limited scattering conditions and tissue heterogeneities.
Dat Tran   +4 more
wiley   +1 more source

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