Demonstrating the use of optically stimulated luminescence dosimeters (OSLDs) for measurement of staff radiation exposure in interventional fluoroscopy and helmet output factors in radiosurgery

Gasparian, P; Ruan, Chun; Ahmad, Salahuddin; Kalavagunta, Chaitanya; Cheng, C.Y.; Yukihara, E.G.

doi:10.1016/j.radmeas.2009.12.001

Cited by 16 publications

(5 citation statements)

References 11 publications

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“…Another advantage associated with the OSL technique is the detector reader. The OSL reader is relatively simple compared to a TL reader and can be small and portable, allowing fast readout on-site [22].…”

Section: Introductionmentioning

confidence: 99%

An overview study on the TL and OSL dosimetry patent processes over time

et al. 2023

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Since its discovery, ionizing radiation has been used in many different applications. Materials and methods have been developed to measure and quantify radiation doses. Thermoluminescence (TL) and Optically Stimulated Luminescence (OSL) are two techniques used for radiation dosimetry. Both TL and OSL are primarily applied in several areas, such as dating of ancient materials, equipment quality control and individual monitoring. One of the parameters to measure the knowledge and development of a technology is the number of patents related to the field. In this work, we established a methodology for patent search on the World Intellectual Property Organization (WIPO) database aiming to review the development of TL and OSL dosimetry over time. We concluded that along with the OSL technique development, the TL technique should continue to be explored in radiation dosimetry.

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Section: Introductionmentioning

confidence: 99%

An overview study on the TL and OSL dosimetry patent processes over time

et al. 2023

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show abstract

“…In previous decades the techniques like Thermo-luminescence (TL) and Optically Stimulated Luminescence (OSL) have proven their applicability in various fields of radiation measurement research like, radiation dosimetry, geological/archeological dating, radiological forensic, and study of the defects in solids [1][2][3][4]. The research for developing the more sensitive tissue equivalent effective atomic number (Zeff) TL and OSL phosphors still continue to achieve considerable milestones.…”

Section: Introductionmentioning

confidence: 99%

“…A wide variety of TL parameters can be determined from these TL glow curves such as, activation energy, attempt to escape frequency, and the order of kinetics associated with thermally released charge transfer mechanism. Similarly, the advancements made in the development of compact high power LEDs and laser technologies have generated great prospects to explore the light output from these sources as an optical stimulation agent for OSL radiation dosimetry [1,2]. In this technique, the metastable trapped charges are optically released and the subsequent recombination with charges of opposite polarity emits the OSL signal, which contains the information of photoionization cross-section of the active trap defects in the material.…”

Section: Introductionmentioning

confidence: 99%

Development of wavelength-resolved 3D-inegrated TL and OSL reader system

Mishra¹,

Pal²,

Bhowmick³

et al. 2021

Eng. Res. Express

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A new wavelength-resolved thermo luminescence (TL) cum optically stimulated luminescence (OSL) reader system has been designed and developed. This reader system uses the compact Seya-Namioka optical layout based monochromator, PMT, and resistive heating method to acquire TL glow curve emissions spectrum. The phosphor samples heated from room temperature to 400 °C, either linearly with a programmable heating rate of 0.01 to 30 K s −1 or alternative constant step temperature profiles. The TL glow curve emission spectrum has been resolved by rotating the grating attached to a monochromator covering the wavelength from 200 to 900 nm. The wavelength scanning is linear with respect to time and the scan rate can be selected from 0.1 to 8 n m s −1 . A broad spectral response of the PMT detection module has been used to record the emitted TL spectrum. The blue (465 nm) reference LED light source is provided for a spectrum calibration of the monochromator. The isometric 3D TL emission spectra of LiCaAlF 6 :Eu,Y, α-Al 2 O 3 :C, and CaSO 4 :Dy have been successfully recorded using this reader system. In order to record the OSL emission spectrum, 470 nm blue LEDs have been provided as a separate stimulation module.

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“…Many decades of extensive research and development has made the phenomena of thermo-luminescence (TL) and optically stimulated luminescence (OSL) valuable investigating tool in various field of applications, like environment/personnel monitoring, geological/archeological dating, medical dosimetry, space dosimetry and more recently in nuclear forensic [1][2][3][4][5]. However, both these techniques are having their own advantages and disadvantage in terms of their use and methods of getting luminescence signals [6].…”

Section: Introductionmentioning

confidence: 99%

Development of miniature heater assembly for compact battery powered thermo-luminescence reader

Mishra¹,

More²,

Sutar³

et al. 2020

Eng. Res. Express

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The miniature heater assembly has been developed for a compact portable battery powered thermoluminescence (TL) reader system. The construction and thermodynamics of this heater assembly has been described in detailed. The theoretical modeling of the heating processes participating in the heater assembly has been evolved and substantiated with experimental evidential analysis. The heat generation rate equations have been formulated by considering the radiative and conduction losses. The formulated theoretical model matches well within the experimental findings under some assumptions made in generation of linear/non-linear and constant temperature heating profiles for a variable heating rate in the range of 0.1 K s −1 to 4 K s −1 with maximum temperature of 400 °C. The developed miniature heater assembly was installed in newly designed battery powered TL reader system. This TL reader system works on four 1.2V, 2.8Ah, Ni-Mh re-chargeable batteries. The TL glow curve of α-Al 2 O 3 :C, CaSO 4 :Dy, and LiCaAlF 6 :Eu,Y (LCAF) phosphor were recorded using the developed heating assembly.

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Demonstrating the use of optically stimulated luminescence dosimeters (OSLDs) for measurement of staff radiation exposure in interventional fluoroscopy and helmet output factors in radiosurgery

Cited by 16 publications

References 11 publications

An overview study on the TL and OSL dosimetry patent processes over time

An overview study on the TL and OSL dosimetry patent processes over time

Development of wavelength-resolved 3D-inegrated TL and OSL reader system

Development of miniature heater assembly for compact battery powered thermo-luminescence reader

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