ESR dosimetry with deciduous teeth
| Project/Area Number |
15K00547
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Risk sciences of radiation and chemicals
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| Research Institution | Okayama University of Science |
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Principal Investigator |
Toyoda Shin 岡山理科大学, 理学部, 教授 (40207650)
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| Co-Investigator(Kenkyū-buntansha) |
大瀧 慈 広島大学, 原爆放射線医科学研究所, 名誉教授 (20110463)
星 正治 広島大学, 平和科学研究センター, 名誉教授 (50099090)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 線量計測 / 乳歯 / ＥＳＲ / 電子スピン共鳴 / 被曝 / EPR / 歯 / ＥＰＲ / 放射線事故 |
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| Outline of Final Research Achievements |
Tooth enamel dosimetry is an established method with permenent teeth. The method with decidous teeth in the low dose range was established in the present study. Enamel was successfully extracted from deciduous teeth by combining the mechanical method with the chemical treatment. The observed ESR signal is somewhat different from that of permanent teeth, but radiation induced signal (RIS) was extracted from the spectra including the interfering sitnal, with the computer simulation program being used for permanent teeth. The averaged sensitivity of the RIS in deciduous teeth is similar as that of the permenent teeth while the variation is larger. In conclusion, the statistical error in estimating the dose is larger when using the same standard samples with the calibration method.
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Report
(4 results)
Research Products
(26 results)
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[Presentation] ESR (EPR) dosimetry with human deciduous, rat, and cattle teeth2018
Author(s)
M. Murahashi, S. Toyoda, M. Hoshi, M. Ohtaki, N. Fujimoto, C. Miyazawa, Y, Yamada, M. Natsuhori
Organizer
2018 Health Physics Society Midyear Meeting & Exhibition
Related Report
Int'l Joint Research
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[Presentation] 動物の歯を用いたESR線量計測2017
Author(s)
村橋美香, 豊田新, 星正治, 大瀧慈, 藤本成明, 遠藤暁, 田中憲一
Organizer
第33回ESR応用計測研究会・2016年度ルミネッセンス年代測定研究会・第44回フィッション・トラック研究会 合同研究発表会
Place of Presentation
奈良 明日香村
Year and Date
2017-03-01
Related Report
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[Presentation] 乳歯を用いたESR線量計測2016
Author(s)
村橋美香, 豊田新, 小山ひより, 星正治, 大瀧慈, 遠藤暁, 田中憲一, 宮澤忠蔵, 山田雄大
Organizer
日本放射線影響学会 第59回大会
Place of Presentation
JMSアステールプラザ, 広島
Year and Date
2016-10-26
Related Report
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[Presentation] 乳歯を用いたESR線量計測2016
Author(s)
村橋美香, 豊田新, 星正治, 遠藤暁, 田中憲一, 大瀧慈, 宮澤忠蔵, 山田雄大
Organizer
ESR応用計測研究会・第40回フィッション・トラック研究会・ルミネッセンス年代測定研究会 合同研究会
Place of Presentation
金沢しいのき迎賓館
Year and Date
2016-03-04
Related Report
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[Presentation] ESR dosimetry study for residents of Kazakhstan2016
Author(s)
K. Zhumadilov, A. Ivannikov, S. Toyoda, V. Stepanenko,V. Skvortsov, M.Hoshi
Organizer
20th Hiroshima International Symposium, Challenges to Estimation of Health Risks Due to Exposure to Radioactive Fallout
Place of Presentation
Miyajima Coral Hotel
Year and Date
2016-01-10
Related Report
Int'l Joint Research
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