Detectability of the radioactive cesium by Fukushima nuclear power plant accident using intraoral imaging plate

2015 Fiscal Year Final Research Report

• Project/Area Number: 25462919
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Pathobiological dentistry/Dental radiology
• Research Institution: The University of Tokushima
• Principal Investigator: YOSHIDA Midori 徳島大学, 大学院医歯薬学研究部, 助教 (30243728)
• Co-Investigator(Kenkyū-buntansha): MAEDA Naoki 徳島大学, 大学院医歯薬学研究部, 助教 (10219272) ; HONDA Eiichi 徳島大学, 大学院医歯薬学研究部, 教授 (30192321) ; HOSOKI Hidehiko 徳島大学, 病院, 講師 (60199502)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 放射性セシウム / 歯科用イメージングフィルム / セシウム１３７ / セシウム１３４ / FCR

Outline of Final Research Achievements

Intraoral digital detector such as imaging plate may make it possible to detect radioactive cesium by taking many times. It took about 3 days to detect radioactivity of 3000 Bq by imaging plate for dentistry. It was shown that it was almost impossible to detect the radioactive cesium of foods without having great radioactivity considering the current standard value of foods. However it was cleared that there was possibility of achieving higher sensitivity more than ten times by usage of k-edge absorption of lead, improving software and pre-exposure techniques. In the future research, it is very important to evaluate the detectability of radioactive cesium by those techniques.

Free Research Field

歯科放射線学分野