Application of the Monte Carlo codes PENELOPE and MCNP5 to unfold X-ray spectra in the diagnostic energy range

Gallardo, S.; Querol, A.; Pozuelo, Fausto; Verdú, G.; Ródenas, J.

doi:10.1016/j.radphyschem.2013.03.008

Cited by 7 publications

(4 citation statements)

References 6 publications

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“…En el campo del radiodiagnóstico Gallardo et al 18 reproducen espectros con unos valores de C 1 = C 2 = 0.2. Estos valores de los parámetros de simulación mixta son relativamente altos comparados con los resultados obtenidos en este trabajo, sin embargo esto puede estar justificado por el mayor número de variables disponibles para la sintonización del haz primario o porque los espectros obtenidos se generan con un ángulo anódico superior a los 10º de forma que las desviaciones en la fluencia son menos evidentes tal y como se muestra en este trabajo.…”

Section: Discussionunclassified

Estudio de la emisión de radiación de frenado mediante simulaciones mixtas con el código Monte Carlo PENELOPE

2020

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El método Monte Carlo permite la descripción precisa de las propiedades de la radiación de frenado, la cual se emplea en medicina para radiodiagnóstico o radioterapia. El código PENELOPE descansa en la implementación de historias condensadas para el transporte de partículas cargadas y permite al usuario adaptar el grado de detalle de las simulaciones mediante los parámetros de simulación. La variación de estos parámetros puede afectar a las distribuciones de partículas obtenidas al simular radiación de frenado producida en blancos gruesos. En este trabajo se analizan las diferencias entre simulaciones con distinto grado de detalle mediante la reproducción con PENELOPE de experimentos publicados de producción de radiación de frenado con electrones de alta y baja energía. Para ello se varían los parámetros de simulación C1 y C2 hasta alcanzar un valor a partir del cual los resultados de las simulaciones son estadísticamente equivalentes. Se ha observado que una inadecuada elección de los parámetros de simulación conlleva una reproducción inexacta de las características del haz de frenado. Se necesita mayor grado de detalle para simular electrones de alta energía en un material de alto número atómico que para electrones de baja energía en un material de bajo número atómico.

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Section: Discussionunclassified

Estudio de la emisión de radiación de frenado mediante simulaciones mixtas con el código Monte Carlo PENELOPE

2020

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“…The several geometries used are constructed from quadratic surfaces, and variance reduction techniques are incorporated to have better adaptability and greater precision. [ 30 33 36 47 48 ] PENELOPE allows creating materials with a single component, alloys, or mixed materials that are present in the constitution of a clinical linear accelerator. All these help to make better reproductions and representations of experimental conditions.…”

Section: Aterials and M Ethodsmentioning

confidence: 99%

“…It has extensive information on various applications for radiotherapy and radiodiagnosis. [ 4 29 30 31 32 33 34 ] Since its first version launched in 1996, the MCS PENELOPE code has become a flexible and reliable tool to describe the coupled transport of photons and electrons in complex material structures,[ 35 36 ] presenting simplicity and versatility to be used in the two most used programming platforms such as Windows and Linux without the necessity of the usage of an intermediary interface. Moreover, the results obtained are presented in .dat extension which is easy to read in any code for statistical analysis such as Origin, Matlab, and Gnuplot.…”

Section: Introductionmentioning

confidence: 99%

“…The main motivation of this work is related to there are few research papers about the use of MCS to determine energy spectra of electron beams[ 21 31 37 38 ] and its characteristic dosimetric parameters in comparison to those existent for photon beam,[ 11 31 33 39 40 41 42 43 44 45 46 ] especially for linear accelerators still used in developing countries. Thus, in this work, an Elekta Synergy Platform linear accelerator was used as a reference, since the Synergy is still one of the most used accelerators in the Latin-American market and other developing regions of the world.…”

Section: Introductionmentioning

confidence: 99%

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Monte carlo calculation of the energy spectrum of a 6 MeV electron beam using penetration and energy loss of positrons and electrons code

et al. 2020

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Background: The limited bibliographic existence of research works on the use of Monte Carlo simulation to determine the energy spectra of electron beams compared to the information available regarding photon beams is a scientific task that should be resolved. Aims: In this work, Monte Carlo simulation was performed through the PENELOPE code of the Sinergy Elekta accelerator head to obtain the spectrum of a 6 MeV electron beam and its characteristic dosimetric parameters. Materials and Methods: The central-axis energy spectrum and the percentage depth dose curve of a 6 MeV electron beam of an Elekta Synergy linear accelerator were obtained by using Monte Carlo PENELOPE code v2014. For this, the linear accelerator head geometry, electron applicators, and water phantom were simplified. Subsequently, the interaction process between the electron beam and head components was simulated in a time of 86.4x10 4 s. Results: From this simulation, the energy spectrum at the linear accelerator exit window and the surface of the phantom was obtained, as well as the associated percentage depth dose curves. The validation of the Monte Carlo simulation was performed by comparing the simulated and the measured percentage depth dose curves via the gamma index criterion. Measured percentage depth- dose was determined by using a Markus electron ionization chamber, type T23343. Characteristic parameters of the beam related with the PDD curves such as the maximum dose depth (R 100 ), 90% dose depth (R 90 ), 90% dose depth or therapeutic range (R 85 ), half dose depth (R 50 ), practical range (R p ), maximum range (R max ), surface dose (D s ), normalized dose gradient (G 0 ) and photon contamination dose (D x ) were determined. Parameters related with the energy spectrum, namely, the most probable energy of electrons at the surface (E p,0 ) and electron average energy ( E – 0 ) were also determined. Conclusion: It was demonstrated that PENELOPE is an attractive and accurate tool for the obtaining of dosimetric parameters of a medical linear accelerator since it can reliably reproduce important clinical data such as the energy spectrum, depth dose, and dose profile.

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Accurate reconstruction of soft X-ray energy spectrum in detector response matrix

Gao

Liu

Ouyang

et al. 2019

Sci. China Phys. Mech. Astron.

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Application of the Monte Carlo codes PENELOPE and MCNP5 to unfold X-ray spectra in the diagnostic energy range

Cited by 7 publications

References 6 publications

Estudio de la emisión de radiación de frenado mediante simulaciones mixtas con el código Monte Carlo PENELOPE

Estudio de la emisión de radiación de frenado mediante simulaciones mixtas con el código Monte Carlo PENELOPE

Monte carlo calculation of the energy spectrum of a 6 MeV electron beam using penetration and energy loss of positrons and electrons code

Accurate reconstruction of soft X-ray energy spectrum in detector response matrix

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