Simulation of the 6 MV Elekta Synergy Platform linac photon beam using Geant4 Application for Tomographic Emission

Didi, Samir; Moussa, A.; Tayalati, Yahya; Zerfaoui, Mustapha

doi:10.4103/0971-6203.165077

Cited by 19 publications

(5 citation statements)

References 34 publications

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“…GATE was created as part of the Open GATE Collaboration for the purpose to supply the world of physicists with a flexible open-source package tool, multi-purpose, GEANT4-based emission tomography computational tool to the academic community. GATE was created to conduct experiments with PET and SPECT [70][71], but new tools made it possible to use it for radiotherapy simulations, including linear accelerator simulations [72][73][74].…”

Section: Gatementioning

confidence: 99%

Monte Carlo Computational Software and Methods in Radiation Dosimetry

Chatzisavvas¹,

Priniotakis²,

Papoutsidakis³

et al. 2021

AETiC

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The fast developments and ongoing demands in radiation dosimetry have piqued the attention of many software developers and physicists to create powerful tools to make their experiments more exact, less expensive, more focused, and with a wider range of possibilities. Many software toolkits, packages, and programs have been produced in recent years, with the majority of them available as open source, open access, or closed source. This study is mostly focused to present what are the Monte Carlo software developed over the years, their implementation in radiation treatment, radiation dosimetry, nuclear detector design for diagnostic imaging, radiation shielding design and radiation protection. Ten software toolkits are introduced, a table with main characteristics and information is presented in order to make someone entering the field of computational Physics with Monte Carlo, make a decision of which software to use for their experimental needs. The possibilities that this software can provide us with allow us to design anything from an X-Ray Tube to whole LINAC costly systems with readily changeable features. From basic x-ray and pair detectors to whole PET, SPECT, CT systems which can be evaluated, validated and configured in order to test new ideas. Calculating doses in patients allows us to quickly acquire, from dosimetry estimates with various sources and isotopes, in various materials, to actual radiation therapies such as Brachytherapy and Proton therapy. We can also manage and simulate Treatment Planning Systems with a variety of characteristics and develop a highly exact approach that actual patients will find useful and enlightening. Shielding is an important feature not only to protect people from radiation in places like nuclear power plants, nuclear medical imaging, and CT and X-Ray examination rooms, but also to prepare and safeguard humanity for interstellar travel and space station missions. This research looks at the computational software that has been available in many applications up to now, with an emphasis on Radiation Dosimetry and its relevance in today's environment.

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Section: Gatementioning

confidence: 99%

Monte Carlo Computational Software and Methods in Radiation Dosimetry

Chatzisavvas¹,

Priniotakis²,

Papoutsidakis³

et al. 2021

AETiC

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“…The mean energy influences both the depth-dose curve and the shape of the dose profiles, while the spot size has only an impact on the dose profiles [15]. In this work, these parameters were adjusted according to the method described in [16]- [18]. A mean electron beam energy of 6.7 Me, 3% FWHM of the mean energy and a full width at half-maximum (FWHM) electron spot of 3 mm have been found to be in good agreement with the measurements.…”

Section: Electron Sourcementioning

confidence: 99%

“…The success of Monte-Carlo modeling of a medical linear accelerator depends crucially on the information implemented on each component of the treatment head, namely the materials, geometric shapes, size and precise position of the various Linac components [17], [18].…”

Section: Introductionmentioning

confidence: 99%

Grid Monte Carlo Simulation of a Medical Linear Accelerator

Didi

Zerfaoui

Moussa

et al. 2018

EJERS

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A full grid simulation of the head of an Elekta Synergy Platform medical linear accelerator is performed using the Geant4 Monte Carlo platform. The simulation includes all components of the accelerator head and a homogeneous water phantom. Results in terms of depth doses and lateral dose profiles are presented for 6 MV photon beam with the 10x10 cm2 reference field size at 100 cm distance from the source. Overall, a good agreement with the measured dose data is achieved with a precision better than 0.93% and 2.63% for the depth dose profile and lateral dose profiles respectively.

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“…These cutoff ranges were well covered by a low energy package for electromagnetic interactions. [ 18 ] The water phantom used for these simulations had a dimension of 30 cm × 30 cm × 30 cm. The center of the water phantom was modeled to be along the central axis of the beam, and the phantom was divided into a set of voxels with dimensions of 2 mm × 2 mm × 2 mm.…”

Section: Onte C Arlo S mentioning

confidence: 99%

Grid block design based on monte carlo simulated dosimetry, the linear quadratic and Hug–Kellerer radiobiological models

et al. 2017

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Purpose:The clinical efficacy of Grid therapy has been examined by several investigators. In this project, the hole diameter and hole spacing in Grid blocks were examined to determine the optimum parameters that give a therapeutic advantage.Methods:The evaluations were performed using Monte Carlo (MC) simulation and commonly used radiobiological models. The Geant4 MC code was used to simulate the dose distributions for 25 different Grid blocks with different hole diameters and center-to-center spacing. The therapeutic parameters of these blocks, namely, the therapeutic ratio (TR) and geometrical sparing factor (GSF) were calculated using two different radiobiological models, including the linear quadratic and Hug–Kellerer models. In addition, the ratio of the open to blocked area (ROTBA) is also used as a geometrical parameter for each block design. Comparisons of the TR, GSF, and ROTBA for all of the blocks were used to derive the parameters for an optimum Grid block with the maximum TR, minimum GSF, and optimal ROTBA. A sample of the optimum Grid block was fabricated at our institution. Dosimetric characteristics of this Grid block were measured using an ionization chamber in water phantom, Gafchromic film, and thermoluminescent dosimeters in Solid Water™ phantom materials.Results:The results of these investigations indicated that Grid blocks with hole diameters between 1.00 and 1.25 cm and spacing of 1.7 or 1.8 cm have optimal therapeutic parameters (TR > 1.3 and GSF~0.90). The measured dosimetric characteristics of the optimum Grid blocks including dose profiles, percentage depth dose, dose output factor (cGy/MU), and valley-to-peak ratio were in good agreement (±5%) with the simulated data.Conclusion:In summary, using MC-based dosimetry, two radiobiological models, and previously published clinical data, we have introduced a method to design a Grid block with optimum therapeutic response. The simulated data were reproduced by experimental data.

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Simulation of the 6 MV Elekta Synergy Platform linac photon beam using Geant4 Application for Tomographic Emission

Cited by 19 publications

References 34 publications

Monte Carlo Computational Software and Methods in Radiation Dosimetry

Monte Carlo Computational Software and Methods in Radiation Dosimetry

Grid Monte Carlo Simulation of a Medical Linear Accelerator

Grid block design based on monte carlo simulated dosimetry, the linear quadratic and Hug–Kellerer radiobiological models

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