Results 71 to 80 of about 2,643 (174)

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

open access: yesPositron, 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

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

open access: yes, 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.   +3 more
core   +1 more source

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

open access: yes, 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.   +8 more
core   +1 more source

GGR Handbook of Rock and Mineral Analysis Chapter 16 Nano‐Imaging for Advanced X‐Ray Fluorescence and Absorption Spectroscopy Applications

open access: yesGeostandards and Geoanalytical Research, Volume 49, Issue 3, Page 495-533, September 2025.
Key Points Synchrotron nano‐imaging is necessary to locate elemental nanophases. Trace metal quantification requires high sensitivity nano‐XRF. Trace metal speciation relies on nano‐XANES using nano‐XRF. This chapter (Nano‐Imaging for Advanced X‐ray Fluorescence and Absorption Spectroscopy Applications) is a contribution to the Geostandards and ...
Alexandre S. Simionovici   +1 more
wiley   +1 more source

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

open access: yes, 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   +3 more
core   +1 more source

Automated algorithm for CBCT-based dose calculations of prostate radiotherapy with bilateral hip prostheses [PDF]

open access: yes, 2016
OBJECTIVE:Cone beam CT (CBCT) images contain more scatter than a conventional CT image and therefore provide inaccurate Hounsfield units (HUs). Consequently, CBCT images cannot be used directly for radiotherapy dose calculation.
Bourland JD   +8 more
core   +1 more source

Monte carlo investigation of photon beam characteristics and its variation with incident electron beam parameters for indigenous medical linear accelerator

open access: yesJournal 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   +4 more
doaj   +1 more source

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

open access: yesBrazilian 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   +2 more
doaj   +1 more source

Monte Carlo calculation of beam quality correction factors in proton beams using detailed simulation of ionization chambers [PDF]

open access: yes, 2016
This work calculates beam quality correction factors (k Q) in monoenergetic proton beams using detailed Monte Carlo simulation of ionization chambers. It uses the Monte Carlo code penh and the electronic stopping powers resulting from the adoption of two
Andreo Hernández, Pedro   +2 more
core   +2 more sources

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