Studies of OSL properties of alkali- and rare earth-doped BeO based novel dosimeters for applications in external beam radiotherapy

Abusaid, W.; Altunal, V.; Akdeniz, Yucel; Güçkan, V.; Ceyran, G.; Khandaker, Mayeen Uddin; Yeğingil, Z.

doi:10.1016/j.radphyschem.2023.111136

Cited by 5 publications

(1 citation statement)

References 36 publications

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“…In precision medicine, there is a high requirement for the accuracy of dosimetric instruments. The angle dependence and water equivalence of instruments are usually issues that must be considered [14][15][16][17]. Ryuichi Yada et al developed an in vivo dosimeter measurement system using BaFBr:Eu 2+ phosphors.…”

Section: Introductionmentioning

confidence: 99%

Research on water equivalence and angle dependence of medical POF scintillation dosimeters

Yu,

Zhang,

Zhao

et al. 2024

Phys. Scr.

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In radiation dosimetry and medical dosimetry, optical fiber dosimeters have great advantages in application due to their small size and long transmission distance. However, in some low-dose radiation environments, the water inequivalence error and angle error of optical fiber dosimeters can have significant impacts that cannot be ignored. In this paper, the effects of ray energy, ray solid angle and optical fiber probe size on water inequivalence error and angle error are analyzed by using Monte Carlo simulation. Due to the complexity of the influencing factors of the angle error, which is difficult to be analyzed precisely and quantitatively, a correction method based on BP neural network is proposed. The final validation results demonstrate that the correction scheme can reduce the total angle error of the optical fiber dosimeter to 2.72%.

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Section: Introductionmentioning

confidence: 99%

Research on water equivalence and angle dependence of medical POF scintillation dosimeters

Yu,

Zhang,

Zhao

et al. 2024

Phys. Scr.

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Implementation of optically simulated luminescent dosimeter for quality control of gamma ray dose of an accelerator‐based neutron source

Hu,

Nakamura,

Kataura

et al. 2024

J Applied Clin Med Phys

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BackgroundNeutron beams utilized for performing BNCT are composed of a mixture of neutrons and gamma rays. Although much of the dose delivered to the cancer cells comes from the high LET particles produced by the boron neutron capture reaction, the dose delivered to the healthy tissues from unwanted gamma rays cannot be ignored. With the increase in the number of accelerators for BNCT, a detector system that is capable of measuring gamma ray dose in a mixed neutron/gamma irradiation field is crucial. Currently, BeO TLDs encased in quartz glass are used to measure gamma ray dose in a BNCT irradiation field. However, this type of TLD is no longer commercially available. A replacement dosimetry system is required to perform the recommended ongoing quality assurance of gamma ray measurement for a clinical BNCT system.PurposeThe purpose of this study is to evaluate the characteristics of a BeO OSLD detector system under a mixed neutron and gamma ray irradiation field and to assess the suitability of the system for routine quality assurance measurements of an accelerator‐based BNCT facility.MethodsThe myOSLD system by RadPro International GmbH was evaluated using the accelerator‐based neutron source designed for clinical BNCT (NeuCure BNCT system). The readout constancy, linearity, dose rate effect, and fading effect of the OSLD were evaluated. Free‐in‐air and water phantom measurements were performed and compared with the TLD results and Monte Carlo simulation results. The PHITS Monte Carlo code was used for this study.ResultsThe readout constancy was found to be stable over a month‐long period and similar to the TLD results. The OSLD readout signal was found to be linear, with a high coefficient of determination (R2 ≥ 0.999) up to a proton charge of 3.6 C. There was no significant signal fading or dose rate dependency. The central axis depth dose and off‐axis dose profile measurements agreed with both the TLD and Monte Carlo simulation results, within one standard deviation.ConclusionThe myOSLD system was characterized using an accelerator system designed for clinical BNCT. The experimental measurements confirmed the OSLD achieved similar, if not superior to, the currently utilized dosimetry system for routine QA of an accelerator‐based BNCT system. The OSLD system would be a suitable replacement for the current TLD system for performing routine QA of gamma ray dose measurement in a BNCT irradiation field.

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BeO ceramics

Altunal

2025

Luminescent Ceramics

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Studies of OSL properties of alkali- and rare earth-doped BeO based novel dosimeters for applications in external beam radiotherapy

Cited by 5 publications

References 36 publications

Research on water equivalence and angle dependence of medical POF scintillation dosimeters

Research on water equivalence and angle dependence of medical POF scintillation dosimeters

Implementation of optically simulated luminescent dosimeter for quality control of gamma ray dose of an accelerator‐based neutron source

BeO ceramics

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