Results 81 to 90 of about 4,632 (208)

Dosimetric effect by shallow air cavities in high energy electron beams [PDF]

, 2014
This study evaluates the dosimetric impact caused by an air cavity located at 2 mm depth from the top surface in a PMMA phantom irradiated by electron beams produced by a Siemens Primus linear accelerator. A systematic evaluation of the effect related to
Carreira, P., Jesus, A. P., Leal, A., Madureira, L., Miras del Rio, H., Mora, G., Salguero, F. J., Teixeira, Nuno, Zarza-Moreno, M.   +8 more
core   +1 more source

Comparison of measured and Monte Carlo calculated dose distributions from indigenously developed 6 MV flattening filter free medical linear accelerator

Journal of Medical Physics, 2018
Purpose: Monte Carlo simulation was carried out for a 6 MV flattening filter-free (FFF) indigenously developed linear accelerator (linac) using the BEAMnrc user-code of the EGSnrc code system. The model was benchmarked against the measurements.
Bibekananda Mishra, Subhalaxmi Mishra, T Palani Selvam, S T Chavan, S N Pethe   +4 more
doaj   +1 more source

Validation of GATE 6.1 for targeted radiotherapy of metastic melanoma using 131I-labeled benzamide [PDF]

, 2012
International audienceThe GATE 6.1 Monte Carlo simulation platform based on the GEANT4 toolkit is in constant improvement for dosimetric calculations. Here, we explore its use for calculating internal absorbed dose distribution in mice for the treatment ...
BRETON, Vincent, Donnarieix, D., Maigne, L., Perrot, Y.   +3 more
core   +1 more source

Assesing multileaf collimator effect on the build-up region using Monte Carlo method [PDF]

, 2008
Previous Monte Carlo studies have investigated the multileaf collimator (MLC) contribution to the build-up region for fields in which the MLC leaves were fully blocking the openings defined by the collimation jaws.
Jesus, A. P., Mora, G., Teixeira, Nuno, Zarza-Moreno, M.   +3 more
core   +1 more source

Comparison between EGSnrc and MCNPX for X-ray target in 6 MV photon beam

Journal of Physics: Conference Series, 2019
The Monte Carlo codes, EGSnrc and MCNPX, have been specifically developed to study the particles transport in linear accelerator used in radiotherapy. A simple X-ray target 6 MV photon beam geometry was chosen to highlight similarities and differences of
S. Yani, R. Tursinah, M. F. Rhani, F. Haryanto, I. Arif   +4 more
semanticscholar   +1 more source

Construção de um catálogo de espectros de raios X para simulações em mamografia

Brazilian Journal of Radiation Sciences, 2018
Modelos Computacionais de Exposição (MCEs) utilizam técnicas Monte Carlo (MC) para simular a interação da radiação com a matéria. Um MCE é constituído, basicamente por um fantoma (geometria a ser irradiada), algoritmos simuladores de fontes radioativas e
Larissa Cristina Silva dos Santos, José Wilson Vieira, Fernando Roberto de Andrade Lima   +2 more
doaj   +1 more source

Analisis Kurva Dose Volume Histogram (DVH) pada Teknik 3D Konformal dengan Metode Monte Carlo

Positron, 2021
Pemilihan sudut penyinaran yang tepat dalam terapi 3D konformal beberapa jenis kanker sangat menentukan keberhasilan pengobatan. Oleh karena itu, tujuan penelitian ini adalah untuk menganalisis dose volume histogram (DVH) teknik 3D konformal dengan ...
Sitti Yani
doaj   +1 more source

Monte Carlo based reconstruction using a rotator for 2-D PET data [PDF]

, 2008
C
Zhang, Long
core   +1 more source

Examination of the Run-Time Differences between the EGSnrc and the EGS5 Monte Carlo Codes

, 2020
EGS5 Monte Carlo code is a general-purpose code for calculating photons and electrons transport for complex geometries in a wide range of energies.
Shlomi Caduri, I. Orion
semanticscholar   +1 more source

Evaluation of electron Monte Carlo algorithm accuracy for dose calculations in extended source‐to‐surface distances electron beam therapy

Journal of Applied Clinical Medical Physics, Volume 26, Issue 9, September 2025.
Abstract Background Extending the source‐to‐surface distance (SSD) is an effective approach to cover a large irradiation area in electron beam therapy for large planning target volumes (PTVs). However, the accuracy of dose calculations at extended SSDs has not been fully validated.
Naohito Ono, Makoto Omiya, Manami Sugiyama, Masaki Oshima   +3 more
wiley   +1 more source