Development of a wavelength-separated type scintillator with optical fiber (SOF) dosimeter to compensate for the Cerenkov radiation effect

Ishikawa, Masayori; Nagase, Naomi; Matsuura, Taeko; Hiratsuka, Junichi; Suzuki, Ryusuke; Miyamoto, Naoki; Sutherland, Kenneth Lee; Fujita, Katsuhisa; Shirato, Hiroki

Development of a wavelength-separated type scintillator with optical fiber (SOF) dosimeter to compensate for the Cerenkov radiation effect

Ishikawa, Masayori; Nagase, Naomi; Matsuura, Taeko et al.

Journal of Radiation Research, 2015, 56(2), 372-381

Permalink : https://hdl.handle.net/2115/58565

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アクセス権	open access
URI	https://hdl.handle.net/2115/58565
タイトル	Development of a wavelength-separated type scintillator with optical fiber (SOF) dosimeter to compensate for the Cerenkov radiation effect
著者	Ishikawa, Masayori ; Nagase, Naomi ; Matsuura, Taeko ; Hiratsuka, Junichi ; Suzuki, Ryusuke ; Miyamoto, Naoki ; Sutherland, Kenneth Lee ; Fujita, Katsuhisa ; Shirato, Hiroki
e-Rad_Researcher 80314772 著者名 Ishikawa, Masayori
著者名 Nagase, Naomi
e-Rad_Researcher 90590266 著者名 Matsuura, Taeko
著者名 Hiratsuka, Junichi
e-Rad_Researcher 00400052 著者名 Suzuki, Ryusuke
e-Rad_Researcher 00552879 著者名 Miyamoto, Naoki
e-Rad_Researcher 30451446 著者名 Sutherland, Kenneth Lee
著者名 Fujita, Katsuhisa
e-Rad_Researcher 20187537 著者名 Shirato, Hiroki
言語	英語
キーワード	Cerenkov light removal
	plastic scintillator dosimetry
	pulse counting mode
	SOF dosimeter
	Ir-192 brachytherapy
発行日	2015-03
出版者	Oxford University Press
収録物名	Journal of Radiation Research
巻(号)	56(2)
ページ	372-381
抄録	The scintillator with optical fiber (SOF) dosimeter consists of a miniature scintillator mounted on the tip of an optical fiber. The scintillator of the current SOF dosimeter is a 1-mm diameter hemisphere. For a scintillation dosimeter coupled with an optical fiber, measurement accuracy is influenced by signals due to Cerenkov radiation in the optical fiber. We have implemented a spectral filtering technique for compensating for the Cerenkov radiation effect specifically for our plastic scintillator-based dosimeter, using a wavelength-separated counting method. A dichroic mirror was used for separating input light signals. Individual signal counting was performed for high- and low-wavelength light signals. To confirm the accuracy, measurements with various amounts of Cerenkov radiation were performed by changing the incident direction while keeping the Ir-192 source-to-dosimeter distance constant, resulting in a fluctuation of <5%. Optical fiber bending was also addressed; no bending effect was observed for our wavelength-separated SOF dosimeter.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Creative Commons Attribution 4.0 International
PISSN	0449-3060
EISSN	1349-9157
関連情報	PMID 25618136
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1093/jrr/rru106