Results 71 to 80 of about 2,681 (192)

A geometrical model for the Monte Carlo simulation of the TrueBeam linac [PDF]

, 2015
Monte Carlo (MC) simulation of linacs depends on the accurate geometrical description of the head. The geometry of the Varian TrueBeam (TB) linac is not available to researchers. Instead, the company distributes phase-space files (PSFs) of the flattening-
Brualla, Lorenzo, Cozzi, Luca, Fogliata, Antonella, Rodriguez, Miguel, Sauerwein, Wolfgang, Sempau, Josep   +5 more
core   +3 more sources

Commissioning and verification of a 3D Monte Carlo independent calculation software for O‐ring linac systems

Journal of Applied Clinical Medical Physics, Volume 27, Issue 1, January 2026.
Abstract Background O‐ring linac systems improve radiotherapy efficiency but require rigorous pretreatment verification due to increased delivery uncertainty in IMRT/VMAT. Existing methods face limitations: measurement‐based approaches incur setup errors, while calculation‐based methods (e.g., Monte Carlo) need machine‐specific validation per AAPM TG ...
Xiangyin Meng, Tingting Dong, Yongguang Liang, Zhen Zhou, Zhiqun Wang, Jie Qiu, Jingjing Zhao, Zheqing Zhang, Wenbo Li, Bo Yang   +9 more
wiley   +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

A Comparison of Mammographic X-ray Spectra: Simulation with EGSnrc and Experiment with CdTe Detector [PDF]

Journal of Radiation Research, 2009
Mammographic x-ray spectra simulated by BEAMnrc/EGSnrc Monte Carlo code were qualitatively compared with the results obtained from the direct measurement using a cadmium telluride x-ray spectroscopy system and from the generation of IPEM report number 78.
Khatayut, Nigapruke, Patana, Puwanich, Nakorn, Phaisangittisakul, Wiwat, Youngdee   +3 more
openaire   +2 more sources

A portable graphite calorimeter for onsite reference dosimetry and beam quality correction factor determination

Journal of Applied Clinical Medical Physics, Volume 26, Issue 12, December 2025.
Abstract Purpose To present a portable, reliable, and fast setup graphite calorimeter for onsite absolute dose measurements at hospitals. Methods We have designed and built a portable graphite calorimeter optimized for fast setup and accurate measurements at clinical centers. Our system has minimum readout and auxiliary electronics and is inserted in a
Nicolás Gómez‐Fernández, Jorge Deus‐Abreu, David Maughan, Faustino Gómez, Diego M. González‐Castaño   +4 more
wiley   +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 investigation of photon beam characteristics and its variation with incident electron beam parameters for indigenous medical linear accelerator

Journal of Medical Physics, 2018
Purpose: A Monte Carlo model of a 6 MV medical linear accelerator (linac) unit built indigenously was developed using the BEAMnrc user code of the EGSnrc code system. The model was benchmarked against the measurements.
Subhalaxmi Mishra, P K Dixit, T Palani Selvam, Sanket S Yavalkar, D D Deshpande   +4 more
doaj   +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

Characterization of a 0.5 × 0.5 mm plastic scintillating detector for small field dosimetry: Its performance and comparison with other commercially available plastic scintillating detectors

Journal of Applied Clinical Medical Physics, Volume 26, Issue 9, September 2025.
Abstract Background Lack of an ideal detector for small field dosimetry has led to the development of many new types of detectors. Recent studies have shown that plastic scintillation detectors (PSDs) provide favorable dosimetric characteristics, such as minimal volume averaging and fluence perturbation effects, real time response rates, high signal to
Milad Baradaran‐Ghahfarokhi, Beshoi Grees, Annie Cooney, Erica Northern, George Ding, Guozhen Luo, Kenneth Homann   +6 more
wiley   +1 more source