Feasibility of Ultra-Thin Fiber-Optic Dosimeters for Radiotherapy Dosimetry

Lee, Bongsoo; Kwon, Guwon; Shin, Sang Hun; Kim, Jae‐Seok; Yoo, Wook Jae; Ji, Young Hoon; Jang, Kyoung Won

doi:10.3390/s151129003

Cited by 3 publications

(4 citation statements)

References 19 publications

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“…Though known to have poor energy resolution, these have less radiation damage compared to solid state detectors and other counterparts. An ultra-thin fibre-optic dosimeter with organic scintillators of thickness 100-200 μm has been discussed (Lee et al, 2015) for radiotherapy dosimetry; gamma rays generated from Co-60 therapy machine are measured. Figure 8a shows the manufacturing process and a detailed structure of the UTFODs.…”

Section: Scintillator Detectorsmentioning

confidence: 99%

Section: Germanium Detectorsmentioning

confidence: 99%

“…Figure 8. a) Manufacturing process and structure of ultra-thin fiber-optic dosimeters (UTFODs) and b) Linear response of the UTFOD according to the absorbed doses. Reproduced under the terms of the CC-BY license [33]. Copyright 2015, MDPI.…”

mentioning

confidence: 99%

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Wearable Dosimeters for Medical and Defence Applications: A State of the Art Review

Dhanekar

Rangra

2021

Adv Materials Technologies

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Wearable dosimeters form an essential part of the personnel protection scheme in work spaces such as defence, nuclear establishments, and medical fields with radiation hazard. In the current scenario where use of high energy ionizing radiation sources (nuclear sources) is indispensable, the need of radiation detectors is mandatory for measuring the dose received by the person exposed in his work space and also measure the dose for patients where nuclear radiation is used for treatment. Wearable dosimeters need to have some special requirements apart from being accurate, precise, and robust. These need to be light in weight and should cause no harm to the human body while it is touching the body or apparels. This paper comprises an introduction to dosimeters, key characteristics, important techniques used for detection of neutrons and X‐rays and also mentions about a few potential companies involved in developing wearable dosimeters in these application areas. The techniques have been collated, described, compared and the need to detect neutrons and X‐rays has been expressed keeping in mind the demand from the defence and medical disciplines. This review also contains artificial intelligence and internet of things which form the basis of trending and upcoming wearable dosimeters.

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Section: Scintillator Detectorsmentioning

confidence: 99%

Section: Germanium Detectorsmentioning

confidence: 99%

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Wearable Dosimeters for Medical and Defence Applications: A State of the Art Review

Dhanekar

Rangra

2021

Adv Materials Technologies

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“…Over the last several decades, optical fiber-based physical sensors have been developed and used in various nuclear and medical facilities [ 10 , 11 , 12 ]. In particular, fiber-optic radiation sensors (FORSs) have desirable characteristics for therapeutic radiation dosimetry [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

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

Jeong

Lee

Lim

et al. 2021

Sensors

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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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Spectral and Amplitude–Time Characteristics of the Cherenkov Radiation upon Excitation of Transparent Materials by an Electron Beam

et al. 2021

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Feasibility of Ultra-Thin Fiber-Optic Dosimeters for Radiotherapy Dosimetry

Cited by 3 publications

References 19 publications

Wearable Dosimeters for Medical and Defence Applications: A State of the Art Review

Wearable Dosimeters for Medical and Defence Applications: A State of the Art Review

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

Spectral and Amplitude–Time Characteristics of the Cherenkov Radiation upon Excitation of Transparent Materials by an Electron Beam

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