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タイトル: Selective Isotope CT Imaging Based on Nuclear Resonance Fluorescence Transmission Method
著者: Ali, Khaled
Ohgaki, Hideaki  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-3553-4091 (unconfirmed)
Zen, Heishun  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-2719-6985 (unconfirmed)
Kii, Toshiteru
Hayakawa, Takehito
Shizuma, Toshiyuki
Toyokawa, Hiroyuki
Taira, Yoshitaka
Iancu, Violeta
Turturica, Gabriel
Ur, Calin Alexandru
Fujimoto, Masaki
Katoh, Masahiro
著者名の別形: 大垣, 英明
全, 炳俊
紀井, 俊輝
早川, 岳人
静間, 俊行
豊川, 弘之
平, 義隆
藤本, 將輝
加藤, 政博
キーワード: Computed tomography (CT)
isotope distribution
laser Compton scattering (LCS) gamma-ray beam
nuclear resonance fluorescence (NRF)
発行日: Aug-2020
出版者: Institute of Electrical and Electronics Engineers (IEEE)
誌名: IEEE Transactions on Nuclear Science
巻: 67
号: 8
開始ページ: 1976
終了ページ: 1984
抄録: The isotope selectivity of computed tomography (CT) imaging based on nuclear resonance fluorescence (NRF) transmission method using a quasi-monochromatic laser Compton scattering (LCS) gamma-ray beam in the MeV region was demonstrated at the Ultra Violet Synchrotron Orbital Radiation–III (UVSOR-III) Synchrotron Radiation Facility (Institute of Molecular Science, National Institute of Natural Science) for two enriched lead isotope rods ( 206 Pb and 208 Pb) implanted in an aluminum cylinder. Since these two rods show the same gamma-ray attenuation in atomic processes, it is impossible to differentiate between them using a standard Gamma-CT technique based on atomic attenuation of gamma rays. The LCS gamma-ray beam had a maximum energy of 5.528 MeV and an intensity of approximately 5.5 photons/s/eV at the resonance energy ( Jπ=1− at 5.512 MeV in 208 Pb). A lead collimator with a hole diameter of 1 mm was used to define the size of the LCS gamma-ray beam at the CT target. The CT image of the 208 Pb rod was selectively obtained with a 2-mm pixel size resolution, which was determined by the horizontal step size of the CT stage.
著作権等: This work is licensed under a Creative Commons Attribution 4.0 License. Formore information, see https://creativecommons.org/licenses/by/4.0/
URI: http://hdl.handle.net/2433/254063
DOI(出版社版): 10.1109/tns.2020.3004565
出現コレクション:学術雑誌掲載論文等

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