Optically Stimulated Luminescence Analysis Method for High Dose Rate Using an Optical Fiber Type Dosimeter

Abstract We propose a novel one-dimensional radiation distribution sensing method using an optical fiber sensor based on wavelength spectrum unfolding for the application in the measurement of the high dose rate hot spots inside the Fukushima Daiichi Nuclear Power Station (FDNPS) buildings. The proposed method estimates the incident position of radiation to the fiber by the unfolding of wavelength spectrum output from the fiber edge on the premise that the attenuation length of light along the fiber depends on a wavelength. Because this method measures integrated light intensity, it can avoid the problem of counting loss and signal pile-up, which occurs in a radiation detector with the pulse counting mode under the high dose rate field. Basic properties of source position detection were confirmed through basic experiments using an ultraviolet light source and 90Sr/90Y radioactive point source.

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Use of optically stimulated luminescence dosimeters for in vivo dosimetry in high-dose-rate gynecological patients

Brachytherapy ◽

10.1016/j.brachy.2009.03.121 ◽

2009 ◽

Vol 8 (2) ◽

pp. 155

Author(s):

Renu Sharma ◽

Paul Jursinic

Keyword(s):

Dose Rate ◽

High Dose Rate ◽

Optically Stimulated Luminescence ◽

In Vivo Dosimetry ◽

High Dose

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SU-E-T-81: Development and Implementation of a Remote Audit Tool for High Dose Rate (HDR) Ir-192 Brachytherapy Using Optically Stimulated Luminescence Dosimetry

Medical Physics ◽

10.1118/1.4735138 ◽

2012 ◽

Vol 39 (6Part10) ◽

pp. 3721-3721 ◽

Cited By ~ 3

Author(s):

K Casey ◽

P Alvarez ◽

A Lawyer ◽

S Kry ◽

R Howell ◽

...

Keyword(s):

Dose Rate ◽

High Dose Rate ◽

Optically Stimulated Luminescence ◽

High Dose ◽

Audit Tool ◽

Luminescence Dosimetry

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Dosimetric characterisation of the optically-stimulated luminescence dosimeter in cobalt-60 high dose rate brachytherapy system

Australasian Physical & Engineering Sciences in Medicine ◽

10.1007/s13246-018-0647-6 ◽

2018 ◽

Vol 41 (2) ◽

pp. 475-485

Author(s):

M. Rejab ◽

J. H. D. Wong ◽

Z. Jamalludin ◽

W. L. Jong ◽

R. A. Malik ◽

...

Keyword(s):

Dose Rate ◽

High Dose Rate ◽

Optically Stimulated Luminescence ◽

High Dose ◽

High Dose Rate Brachytherapy

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Optical Filter-Embedded Fiber-Optic Radiation Sensor for Ultra-High Dose Rate Electron Beam Dosimetry

Sensors ◽

10.3390/s21175840 ◽

2021 ◽

Vol 21 (17) ◽

pp. 5840

Author(s):

Dong-Hyeok Jeong ◽

Manwoo Lee ◽

Heuijin Lim ◽

Sang-Koo Kang ◽

Kyohyun Lee ◽

...

Keyword(s):

Optical Fiber ◽

Dose Rate ◽

Fiber Optic ◽

Electron Beams ◽

Optical Filter ◽

High Dose Rate ◽

High Dose ◽

Optic Radiation ◽

Normal Tissues ◽

Radiation Sensor

FLASH radiotherapy is an emerging radiotherapy technique used to spare normal tissues. It employs ultra-high dose rate radiation beams over 40 Gy/s, which is significantly higher than those of conventional radiotherapy. In this study, a fiber-optic radiation sensor (FORS) was fabricated using a plastic scintillator, an optical filter, and a plastic optical fiber to measure the ultra-high dose rate electron beams over 40 Gy/s used in FLASH radiotherapy. The radiation-induced emissions, such as Cherenkov radiation and fluorescence generated in a transmitting optical fiber, were spectrally discriminated from the light outputs of the FORS. To evaluate the linearity and dose rate dependence of the FORS, the outputs of the fiber-optic radiation sensor were measured according to distances from an electron scattering device, and the results were compared with those of an ionization chamber and radiochromic films. Finally, the percentage depth doses were obtained using the FORS as a function of depth in a water phantom. This study found that ultra-high dose rate electron beams over 40 Gy/s could be measured in real time using a FORS.

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