Development of positron imaging technology for cesium kinetic analysis in plants and animals
| Project/Area Number |
16K06962
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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 |
Nuclear engineering
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| Research Institution | National Institutes for Quantum and Radiological Science and Technology |
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Principal Investigator |
SUZUI Nobuo 国立研究開発法人量子科学技術研究開発機構, 高崎量子応用研究所 放射線生物応用研究部, 主幹研究員(定常) (20391287)
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| Co-Investigator(Kenkyū-buntansha) |
渡部 浩司 東北大学, サイクロトロン・ラジオアイソトープセンター, 教授 (40280820)
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| Project Period (FY) |
2016-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 放射性セシウム / PET / 非破壊計測 / ポジトロンイメージング |
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| Outline of Final Research Achievements |
We have developed a positron-emitting cesium tracer and realized non-destructive imaging of cesium dynamics in living animals and plants. First, we have established a method to produce and purify positron-emitting radionuclide, Cs-127 (half-life: 6.25 h). Next, we administered Cs-127 tracer to plants and analyzed the cesium kinetics in various plants using the Plant Research Positron Emission Imaging System (PETIS). Furthermore, we administered Cs-127 tracer to living animals and successfully visualized the cesium dynamics using positron emission tomography (PET).
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| Academic Significance and Societal Importance of the Research Achievements |
本手法により動植物体内におけるセシウムの輸送メカニズムの解明や動態モデルの構築を行うことが可能となった。セシウム動態に関する基礎的な知見を収集することで、将来起こりうる原子力発電所でのシビアアクシデントに対する確率論的リスク評価（PRA: Probabilistic Risk Assessment）に繋げ、社会的意義の高い成果の発信が期待される。
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Report
(5 results)
Research Products
(4 results)
