Validation of Geant4 electromagnetic physics versus protocol data

Amako, K.; Guatelli, Susanna; Ivanchencko, V.; Maire, M.; Mascialino, B.; Murakami, Kosuke; Pandola, L.; Parlati, S.; Pia, Maria Grazia; Piergentili, M.; Sasaki, Takashi; Urbán, L.

doi:10.1109/nssmic.2004.1462680

Cited by 16 publications

(16 citation statements)

References 16 publications

(15 reference statements)

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“…The electron interactions modelled were multiple scattering, ionisations and bremsstrahlung. Geant4 photon cross sections have been validated successfully with respect to reference NIST data [18]. The I-125 decay spectrum used for the simulations is listed in Table 3.…”

Section: Methodsmentioning

confidence: 99%

Monte Carlo validation and optimisation of detector packaging for spectroscopic dosimetry for in vivo urethral dosimetry during low dose rate brachytherapy

Nourbehesht

Cutajar

Guatelli

et al. 2015

Australas Phys Eng Sci Med

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The urethral mini-dosimeter, developed by the Centre for Medical Radiation Physics, University of Wollongong, uses spectroscopic dosimetry to provide real time point dose measurements along the urethra during low dose rate prostate brachytherapy. Spectroscopic dosimetry uses the measured spectrum of the treatment isotope to estimate the dose rate at the point of measurement, however, the silicon mini-detectors employed in the urethral mini-dosimeter require water proof encapsulation which must be capable of providing electromagnetic shielding without greatly increasing the size of the probe. The introduction of non-tissue equivalent materials within the encapsulation can change the spectrum of radiation incident on the detector, which may influence the application of spectroscopic dosimetry within the urethral dosimeter. The Monte Carlo code Geant4 was adopted to study the effect of encapsulation on the operation of the urethral mini-dosimeter, as well as to determine whether an appropriate thickness of aluminium shielding was possible for electromagnetic screening. The depth dose response and angular dependence of the urethral mini-dosimeter with three thicknesses of aluminium shielding (20, 50, 100 µm) was compared with the urethral mini-dosimeter without aluminium shielding. The aluminium shielding had the effect of increasing the depth dose response (up to 3% within 30 mm and up to 5% within 50 mm), slightly reduced the azimuth angular dependence and slightly increased the polar angular dependence. The 100 µm thick shielding provided the least azimuth angular dependence (±2 %) and provided a polar angular dependence of ±1.4 % within the angles of -45° to 45°.

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Section: Methodsmentioning

confidence: 99%

Monte Carlo validation and optimisation of detector packaging for spectroscopic dosimetry for in vivo urethral dosimetry during low dose rate brachytherapy

Nourbehesht

Cutajar

Guatelli

et al. 2015

Australas Phys Eng Sci Med

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“…Consideramos que o Geant4 já está validado para o transporte de elétrons (37,38), por este motivo não serão feitas comparações do MRMC com dados experimentais.…”

Section: Metodologia Dos Testes Do Mrmc E Da Análise De Seus Resultadosunclassified

Avaliação de algoritmo Macro Response Monte Carlo através dos espectros de elétrons

Perles¹

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“…Physics validation is performed by comparison to experimental data, over a wide set of use cases. The validation of the Geant4 Low Energy Electromagnetic package is described extensively in another paper [18] of these proceedings.…”

Section: Testing and Validationmentioning

confidence: 99%

Geant4 low energy electromagnetic physics

Chauvie

Guatelli

Ivanchenko

et al.

IEEE Symposium Conference Record Nuclear Science 2004.

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129

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Abstract-The Geant4 Simulation Toolkit includes a specialised package, implementing a precise treatment of electromagnetic interactions of particles with matter below 1 keV. The Geant4 Low Energy Electromagnetic package provides a variety of models describing the electromagnetic processes of electrons and positrons, photons, charged hadrons and ions, taking into account detailed features, such as atomic shell effects and charge dependence. These features are relevant to several experimental domains, such as astrophysics, space science and bio-medical research, and have enabled new simulation studies beyond the conventional applications of Geant4 in high energy physics. The design of the package and the physics models implemented are presented.

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Validation of Geant4 electromagnetic physics versus protocol data

Cited by 16 publications

References 16 publications

Monte Carlo validation and optimisation of detector packaging for spectroscopic dosimetry for in vivo urethral dosimetry during low dose rate brachytherapy

Monte Carlo validation and optimisation of detector packaging for spectroscopic dosimetry for in vivo urethral dosimetry during low dose rate brachytherapy

Avaliação de algoritmo Macro Response Monte Carlo através dos espectros de elétrons

Geant4 low energy electromagnetic physics

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