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Effects of ultraviolet rays on L-band in vivo EPR dosimetry using tooth enamel
https://kagawa-u.repo.nii.ac.jp/records/7844
https://kagawa-u.repo.nii.ac.jp/records/7844008aac0b-5897-4969-9bb3-51e9016b7958
| 名前 / ファイル | ライセンス | アクション |
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本文 (5.1 MB)
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内容の要旨 (89.4 kB)
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審査の結果の要旨 (98.4 kB)
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| Item type | 学位論文 / Thesis or Dissertation(1) | |||||||||||
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| 公開日 | 2021-10-05 | |||||||||||
| タイトル | ||||||||||||
| タイトル | Effects of ultraviolet rays on L-band in vivo EPR dosimetry using tooth enamel | |||||||||||
| 言語 | en | |||||||||||
| 言語 | ||||||||||||
| 言語 | eng | |||||||||||
| 資源タイプ | ||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||||||||
| 資源タイプ | doctoral thesis | |||||||||||
| その他（別言語等）のタイトル | ||||||||||||
| その他のタイトル | 歯のエナメル質を用いたLバンド生体内EPR線量測定における紫外線の影響 | |||||||||||
| 言語 | ja | |||||||||||
| アクセス権 | ||||||||||||
| アクセス権 | open access | |||||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||||
| 著者 |
中井, 康博
× 中井, 康博
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| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | L-band electron paramagnetic resonance (EPR) in vivo dosimetry has the potential advantage of being able to accurately and sensitively measure the absorbed dose of ionizing radiation by measurements of teeth in situ. The equipment is transportable to the site where a radiation incident occurred and can be operated without specialized facilities. It, therefore, is very suitable for medical triage of victims in a large-scale radiation incident to quickly determine whether the dose was large enough to require urgent care. The measurements are made on the outer surfaces of the two upper incisor teeth. However, some in vitro studies of extracted teeth using higher frequency EPR have suggested that exposure to ultraviolet rays (UV) from sunlight might confound estimates of the dose of ionizing radiation made with EPR. Because the outer surfaces of incisors are likely to be exposed to UV/sunlight, it, therefore, is essential to determine the potential quantitative impact of UV on L-band EPR dosimetry measurements based on incisors. We, therefore, investigated the quantitative effect of UV on the EPR signal from ionizing irradiation of human teeth using the L-band spectrometer developed for field dosimetry. The UV-generated EPR signal was very small relative to the signals resulting from doses of ionizing radiation that are used for triage. For example, using our estimates of the effects of UV, for a lifetime of 50 years of exposure of these teeth (assuming an average exposure to sunlight of two hours/day), the expected average lifetime effect of UV-induced signal would be equivalent to 0.33 Gy; in contrast, triage criteria for accidental exposure to ionizing irradiation generally start at 2.0 Gy. | |||||||||||
| 言語 | en | |||||||||||
| 学位名 | ||||||||||||
| 言語 | ja | |||||||||||
| 学位名 | 博士（医学） | |||||||||||
| 学位授与機関 | ||||||||||||
| 識別子Scheme | kakenhi | |||||||||||
| 識別子 | 16201 | |||||||||||
| 言語 | ja | |||||||||||
| 機関名 | 香川大学 | |||||||||||
| 言語 | en | |||||||||||
| 機関名 | Kagawa University | |||||||||||
| 学位授与年月日 | ||||||||||||
| 学位授与年月日 | 2021-09-28 | |||||||||||
| 学位授与番号 | ||||||||||||
| 学位授与番号 | 甲第785号 | |||||||||||
| 権利 | ||||||||||||
| 言語 | en | |||||||||||
| 権利情報 | Copyright © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Austria, part of Springer Nature | |||||||||||
| 論文ID（NAID） | ||||||||||||
| 識別子タイプ | NAID | |||||||||||
| 関連識別子 | 500001530578 | |||||||||||
| 関連サイト | ||||||||||||
| 関連タイプ | isVersionOf | |||||||||||
| 識別子タイプ | DOI | |||||||||||
| 関連識別子 | https://doi.org/10.1007/s00723-021-01340-3 | |||||||||||
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| 関連タイプ | isIdenticalTo | |||||||||||
| 識別子タイプ | URI | |||||||||||
| 関連識別子 | https://dl.ndl.go.jp/pid/12361463/ | |||||||||||
| 助成情報 | ||||||||||||
| 識別子タイプ | Crossref Funder | |||||||||||
| 助成機関識別子 | https://doi.org/10.13039/501100001691 | |||||||||||
| 助成機関名 | 日本学術振興会 | |||||||||||
| 言語 | ja | |||||||||||
| 助成機関名 | Japan Society for the Promotion of Science | |||||||||||
| 言語 | en | |||||||||||
| 研究課題番号URI | https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18K09724/ | |||||||||||
| 研究課題番号 | 18K09724 | |||||||||||
| 研究課題名 | 歯エナメル質生体EPR被曝線量測定装置の開発 | |||||||||||
| 言語 | ja | |||||||||||
| 研究課題名 | Development of EPR in vivo tooth Dosimeter | |||||||||||
| 言語 | en | |||||||||||
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| 出版タイプ | P | |||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_fa2ee174bc00049f | |||||||||||
