Measurement of low-dose and long-time external exposure using human teeth.
| Project/Area Number |
26670898
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Social dentistry
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KINO Yasushi 東北大学, 理学研究科, 准教授 (00272005)
CHIBA Mirei 東北大学, 歯学研究科, 講師 (10236820)
SHIMIZU Yoshinaka 東北大学, 歯学研究科, 助教 (30302152)
SUZUKI Toshihiko 東北大学, 歯学研究科, 准教授 (70261518)
SHINODA Hisashi 東北大学, 歯学研究科, 名誉教授 (80014025)
OKA Toshitaka 東北大学, 高度教養教育・学生支援機構, 助教 (70339745)
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| Research Collaborator |
MIURA Tomisato 弘前大学, 保健学研究科, 准教授 (20261456)
KOARAI Kazuma 東北大学, 理学研究科, 大学院生
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | Electron spin resonance / External exposure / Teeth / 歯学 / 低線量長期被曝 / ESR計測 / ＥＳＲ計測 |
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| Outline of Final Research Achievements |
The Fukushima-Daiichi Nuclear Power Plant accident released a substantial amount of radioactive nuclides into the atmosphere and caused extensive contamination of the environment. In this study, we tried to measure external exposure in such environment using human teeth. Teeth samples were exposed for six months in polluted zones induced by the accident. It is well known that external exposure produce CO signals in teeth enamels and these signals remain in it for a long time. We assesed the CO signals by using electron spin resonance measurement. As a result, it was confirmed that teeth enamel samples exposed in the evacuated zone under about 160 mGy per year (18.3μGy/h) increased in CO signals. And, there was a fine correlation between actual measurement values by dosimeters and regression analysis values by the CO signals in the teeth enamel in this condition.
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Report
(3 results)
Research Products
(21 results)
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[Journal Article] Software development for estimating the concentration of radioactive cesium in the skeletal muscles of cattle from blood samples.2015
Author(s)
Fukuda T, Hiji M, Kino Y, Abe Y, Yamashiro H, Kobayashi J, Shimizu Y, Takahashi A, Suzuki T, Chiba M, Inoue K, Kuwahara Y, Morimoto M, Katayama M, Donai K, Shinoda H, Sekine T, Fukumoto M, Isogai E.
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Journal Title
Ａｎｉｍａｌ Ｓｃｉｅｎｃｅ Ｊｏｕｒｎａｌ
Volume: 86
Issue: 6
Pages: 12490-12490
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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[Journal Article] 90Sr in teeth of cattle abandoned in evacuation zone: Record of pollution from the Fukushima-Daiichi Nuclear Power Plant accident2015
Author(s)
K.Koarai, Y. Kino, A. Takahashi, T. Suzuki, Y. Shimizu, M. Chiba, K. Osaka, K. Sasaki, T. Fukuda, E. Isogai, T. Oka, T. Sekine, M. Fukumoto, H. Shinoda
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Journal Title
Scientific Reports
Volume: 6
Issue: 1
Pages: 24077-24086
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Cesium radioactivity in peripheral blood is linearly correlated to that in skeletal muscle: Analyses of cattle within the evacuation zone of the Fukushima Daiichi Nuclear Power Plant2015
Author(s)
Tomokazu FUKUDA, Yasushi KINO, Yasuyuki ABE, Hideaki YAMASHIRO, Jin KOBAYASHI, Yoshinaka SHIMIZU, Atsushi TAKAHASHI, Toshihiko SUZUKI, Mirei CHIBA, Shintaro TAKAHASHI, Kazuya INOUE, Yoshikazu KUWAHARA, Motoko MORIMOTO, Hisashi SHINODA, Masahiro HIJI, Tsutomu SEKINE, Manabu FUKUMOTO and Emiko ISOGAI
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Journal Title
Animal Science Journal
Volume: 86
Pages: 120-124
Related Report
Peer Reviewed
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