Basic characteristics of tissue-equivalent phantom thermoluminescence slab dosimeter using new TL phosphor Li3B7012:Cu

Shinsho, Kiyomitsu; Koba, Yusuke; Wakabayashi, Go; Tamatsu, Satoshi; Fukuda, Satoshi; Morimoto, Ryo; Maruyama, Daiki; Saitoh, Hidetoshi; Sakurai, Noboru

doi:10.1016/j.radmeas.2014.01.001

Cited by 12 publications

(7 citation statements)

References 10 publications

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“…To prevent the synthetic resin from softening in heat, the TLDs were heated with a temperature limit of 180°C. The density and the effective atomic number were 1.01 g cm −3 and 7.42, respectively [6]. In this report, TL phosphor Li 3 B 7 O 12 :Cu with a size of 10 mm × 10 mm × 2.5 mm was used.…”

Section: Tl Phosphor LI 3 B 7 O 12 :Cu and Glow Curve Readout Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Recently, a tissue equivalent slab-type TLD based on the phosphor Li 3 B 7 O 12 :Cu has been developed to verify the dose distribution in 3D [6]. The tissue equivalent slab-type TLD has shown good dose linearity and excellent spatial resolution, so that it has the potential to be a 3D dose verification tool [6]. To realize the use of the tissue equivalent slab-type TLD for a heavy charged CONTACT Weishan Chang chang-weishan@ed.tmu.ac.jp particle beam, the LET dependence in TL-efficiency should be overcome [7,8].…”

Section: Introductionmentioning

confidence: 99%

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Absorbed dose estimation using LET dependence in glow curve of thermoluminescent phosphor Li₃B₇O₁₂:Cu in therapeutic carbon beams

Chang

Koba²,

Fukuda³

et al. 2016

Journal of Nuclear Science and Technology

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A high temperature ratio (HTR) method has been proposed to correct the linear energy transfer (LET) dependence of thermoluminescent (TL) efficiency. To realize the use of the slab-type thermoluminescence detector (TLD) that based on the phosphor Li 3 B 7 O 12 :Cu for heavy charged particle beam, the HTR method has been considered. To improve the reproducibility of HTR, the slow heating rate method is introduced in this report and the coefficient variations of HTR decreased from 10%-20% to 8%. The relation between TL-efficiency, HTR, and LET for Li 3 B 7 O 12 :Cu was manifested and the TL-efficiency as a function of HTR was derived in an attempt to measure the absorbed dose without LET information. The feasibility of the HTR method in therapeutic carbon beams was evaluated by comparing the dose estimated by Li 3 B 7 O 12 :Cu and by an ionization chamber. The accuracy of dose estimation in carbon beams was improved by using the HTR method, but there is room for further improvement. The use of Li 3 B 7 O 12 :Cu in heavy charged particle beams can be materialized with further improvement of HTR sensitivity.

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Section: Tl Phosphor LI 3 B 7 O 12 :Cu and Glow Curve Readout Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Absorbed dose estimation using LET dependence in glow curve of thermoluminescent phosphor Li₃B₇O₁₂:Cu in therapeutic carbon beams

Chang

Koba²,

Fukuda³

et al. 2016

Journal of Nuclear Science and Technology

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“…Several 2D thermoluminescence dosimeters (TLDs) have been developed since the 1960s and are expected to be applied as reusable 2D passive dosimeters with a wide dynamic range. (6)(7)(8)(9)(10)(11)(12) In particular, tissue-equivalent 2D TLDs have been developed and used for clinical applications because of their small energy dependence. 2D TLDs have a potential advantage in being capable of correcting sensitivity nonuniformities for every pixel of acquired thermoluminescence (TL) images owing to their repeatability.…”

Section: Introductionmentioning

confidence: 99%

“…The repeatability obtained using a photomultiplier tube (PMT) system is well within 1% of the coefficient of variation (CV), and the dose response linearity ranges up to approximately 5 Gy for 6 MV X-ray beams. (12) The TL properties for charged particles have also been reported. (15,16) In addition, the use of water as a phantom material is standard for reference dosimetry in radiotherapy, and Al 2 O 3 :Cr TLDs can be used under water.…”

Section: Introductionmentioning

confidence: 99%

Two-dimensional Thermoluminescence Dosimetry Using Al2O3:Cr Ceramics for 4, 6, and 10 MV X-ray Beams

Yanagisawa¹,

Maruyama²,

Oh³

et al. 2020

Sensors and Materials

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Despite their advantages, two-dimensional (2D) thermoluminescence dosimeters (TLDs) have not yet replaced film dosimeters owing to their nonuniformity and low repeatability. A 2D TLD based on Al 2 O 3 :Cr ceramics is a promising new reusable passive dosimeter. 2D Al 2 O 3 :Cr TLDs can be used for geometry check tests and dose distribution verification in robotic radiosurgery using monoenergetic X-ray beams. In this work, the dependence of energy on the field size and water depth of 2D Al 2 O 3 :Cr TLDs for 4, 6, and 10 MV X-ray beams was investigated, because multienergy X-ray beams are used in radiotherapy. Intensity-modulated radiotherapy plan verifications were performed using the TLDs. The TLDs were found to have a large field size dependence for each energy, but their water depth dependence was small at a water depth above 4 cm for each energy. The relative dose distributions were verified with high accuracy using the TLDs.

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Thermally Stimulated Luminescent (TSL) Materials

Shinsho

2022

Phosphors for Radiation Detectors

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Basic characteristics of tissue-equivalent phantom thermoluminescence slab dosimeter using new TL phosphor Li3B7012:Cu

Cited by 12 publications

References 10 publications

Absorbed dose estimation using LET dependence in glow curve of thermoluminescent phosphor Li₃B₇O₁₂:Cu in therapeutic carbon beams

Absorbed dose estimation using LET dependence in glow curve of thermoluminescent phosphor Li₃B₇O₁₂:Cu in therapeutic carbon beams

Two-dimensional Thermoluminescence Dosimetry Using Al2O3:Cr Ceramics for 4, 6, and 10 MV X-ray Beams

Thermally Stimulated Luminescent (TSL) Materials

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Basic characteristics of tissue-equivalent phantom thermoluminescence slab dosimeter using new TL phosphor Li3B7012:Cu

Cited by 12 publications

References 10 publications

Absorbed dose estimation using LET dependence in glow curve of thermoluminescent phosphor Li3B7O12:Cu in therapeutic carbon beams

Absorbed dose estimation using LET dependence in glow curve of thermoluminescent phosphor Li3B7O12:Cu in therapeutic carbon beams

Two-dimensional Thermoluminescence Dosimetry Using Al2O3:Cr Ceramics for 4, 6, and 10 MV X-ray Beams

Thermally Stimulated Luminescent (TSL) Materials

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Product

Resources

About

Absorbed dose estimation using LET dependence in glow curve of thermoluminescent phosphor Li₃B₇O₁₂:Cu in therapeutic carbon beams

Absorbed dose estimation using LET dependence in glow curve of thermoluminescent phosphor Li₃B₇O₁₂:Cu in therapeutic carbon beams