Comparison of RPL GD-301 and TLD-100 detectors responses by Monte Carlo simulation

Benali, A.-H.; Ishak-Boushaki, G. Medkour; Nourreddine, A.; Allab, M.

doi:10.1051/epjconf/201510002001

Cited by 4 publications

(8 citation statements)

References 5 publications

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“…For flatness and symmetry, our results show a good correspondence with the recommended values where the flatness and symmetry calculated in all dosimeters materials are less than 1.7%. We also found concordance with the literature for the parameters derived from PDD curves, such as various ranges (𝑅 100 , 𝑅 90 , 𝑅 80 , 𝑅 50 and 𝑅 𝑝 ) and energies specification (𝐸 𝑝,𝑜 and 𝐸 0 ) for different electron beams (9,12, 16 and 20 MeV).In conclusion, this study demonstrates a good correspondence with the results of measurements and Monte Carlo simulations found in the literature. RPLGD and OSLD can be as TLD useful detectors for quality assurance (QA) verifications concerning dose profile and PDD curve for clinical electron beam.…”

supporting

confidence: 90%

supporting

confidence: 87%

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Application of luminescent detectors in quality assurance of clinical electron beam

Benali¹,

Ishak-Boushaki²,

Nourreddine³

2020

J. Inst.

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Thermoluminescent dosimeters (TLD) are widely applied in quality assurance of external radiotherapy beam. The aim of this study is to check the possible use of radiophotoluminescent glass dosimeters (RPLGD), and optically stimulated luminescent dosimeters (OSLD) in quality assurance of clinical electron beam (used in radiotherapy treatments). For this purpose, we give in this paper, an estimation and a comparison of dosimetric parameters, characterizing dose profile and percentage depth dose (PDD) curves, for electron beam using the different studied detectors. The Monte Carlo MCNP5 simulation code was utilized to calculate the distribution of deposited energy along X-axis and PDD curves in a water phantom using RPLGD (FD-7glass), TLD (LiF: Mg, Ti) and OSLD (Al2O3:C) for electron beam energies of 9, 12, 16 and 20 MeV. Our calculations show that the profiles for different electron energies are almost identical for all used materials: we found similar average penumbra and full width at half maximum (FWHM). For flatness and symmetry, our results show a good correspondence with the recommended values where the flatness and symmetry calculated in all dosimeters materials are less than 1.7%. We also found concordance with the literature for the parameters derived from PDD curves, such as various ranges (R100, R90, R80, R50 and Rp) and energies specification (Ep,o and E0) for different electron beams (9, 12, 16 and 20 MeV). In conclusion, this study demonstrates a good correspondence with the results of measurements and Monte Carlo simulations found in the literature. RPLGD and OSLD can be as TLD useful detectors for quality assurance (QA) verifications concerning dose profile and PDD curve for clinical electron beam. Further research is recommended to broaden the scope of the current study.

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supporting

confidence: 90%

supporting

confidence: 87%

Application of luminescent detectors in quality assurance of clinical electron beam

Benali¹,

Ishak-Boushaki²,

Nourreddine³

2020

J. Inst.

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“…For the 250 kV photon beam, a maximum percentage difference was 7.5%, approximately in a 2.5 cm depth from the GD-301 PDD curves, as shown in figure 5a. Despite the difference, the results obtained in this work are according to the literature [6].…”

Section: Resultssupporting

confidence: 55%

“…Radiophotoluminescence has been studied since the 1950s [1][2][3][4][5]. In the following decade, improved glass formulations showed increased sensitivity avoiding noise efficiency [6,7], allowing advanced glass formulations and sophisticated optoelectronics [8]. The chemical composition of the GD-301 is described in table 1; since the compost silver-activated phosphate glass is exposed to ionizing radiation, RPL centers appear and after submitting to a pulsed ultraviolet laser beam, it emits orange luminescence, which is proportional to the absorbed dose [9].…”

Section: Introductionmentioning

confidence: 99%

Relative dose-response from solid-state and gel dosimeters through Monte Carlo simulations

2022

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The present work compared the relative absorbed dose of some dosimetric materials, for energies of 250 kV and 6 MV, using PENELOPE and MNCPX codes. The composition of each material GD-301, TLD-100, MAGIC, and MAGAT were simulated and disposed of in a phantom filled with water following reference conditions recommended by the TRS-398 protocol. Percentage depth dose was used as a parameter of comparison. Since the obtained results with both codes were found a maximum difference of up to 2 % when compared the water material with experimental data before 6cm were found to a maximum difference of up to 2.2% for 6 MV and 5.5 % for 250 kV. Ratios between simulated PPD and experimental PDD values showed a maximum difference in the build-up region, for 6 MV, due to highsensitivityive from the incident fluency in the simulated and experimental conditions. The ratios for 250 kV showed significant differences from the simulated solid-state rather than gel dosimeters, due to its low energy, depth angular dependence from the solid-state dosimeter, as corroborating by literature. Even the differences showed for both codes, especially for lower energy, due to cross-the section database that implied the interaction probability for each Monte Carlo code, this method has been widely used to model radiation transport in several applications in medical physics, especially in dosimetry.

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“…Luminescent dosimeters are materials that emit a quantity of light, proportional to the absorbed ionizing radiation when irradiated. There are three main groups of luminescence detectors applied in clinical dosimetry: thermo-luminescence dosimeter (TLD), Optically stimulated luminescence dosimeter (OSLD) and Radiophotoluminescent glass dosimeters (RPLD) [1][2][3][4].…”

mentioning

confidence: 99%

Geometrical effects on luminescent dosimeter energy response

Benali¹,

Ishak-Boushaki²,

Riffaud³

et al. 2022

J. Inst.

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Luminescent dosimeters are widely used in medical applications. For an optimal use of these dosimeters, comparative studies of their characteristics, under clinical radiations, are very useful. The purpose of this study is to establish the effect of dosimeter geometry on the luminescent dosimeter energy response for different clinical radiation beams. Monte Carlo simulations were used to calculate the energy response of three kinds of non-commercialized luminescent dosimeters. The dosimeters are: a) radiophotoluminescent glass dosimeter (RPLGD, typeFD-7 glass), b) thermoluminescent dosimeter (TLD, type LiF:Mg,Ti) and c) optically stimulated dosimeter (OSLD, type Al2O3:C).The studied dosimeters have cylindrical geometry with a thickness of 2mm and diameters ranging from 1 to 13 mm. The radiation beams were 70 kV X-ray beam, clinical photon beam of 15 MV and clinical electron beam of 9 MeV. This study confirms a non-negligible effect on the dosimeter geometry on its energy response for these beams.

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Comparison of RPL GD-301 and TLD-100 detectors responses by Monte Carlo simulation

Cited by 4 publications

References 5 publications

Application of luminescent detectors in quality assurance of clinical electron beam

Application of luminescent detectors in quality assurance of clinical electron beam

Relative dose-response from solid-state and gel dosimeters through Monte Carlo simulations

Geometrical effects on luminescent dosimeter energy response

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