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Clinical Trial
. 2014 Dec 5;9(12):e114407.
doi: 10.1371/journal.pone.0114407. eCollection 2014.

Internal radiation exposure dose in Iwaki city, Fukushima prefecture after the accident at Fukushima Dai-ichi Nuclear Power Plant

Makiko Orita  1 , Naomi Hayashida  1 , Hiroshi Nukui  1 , Naoko Fukuda  2 , Takashi Kudo  2 , Naoki Matsuda  3 , Yoshiko Fukushima  4 , Noboru Takamura  1
Affiliations
Clinical Trial

Internal radiation exposure dose in Iwaki city, Fukushima prefecture after the accident at Fukushima Dai-ichi Nuclear Power Plant

Makiko Orita et al. PLoS One. .

Abstract

As a result of the accident at the Fukushima Daiichi Nuclear Power Plant (FNPP) on 11 March 2011, a huge amount of radionuclides, including radiocesium, was released and spread over a wide area of eastern Japan. Although three years have passed since the accident, residents around the FNPP are anxious about internal radiation exposure due to radiocesium. In this study, we screened internal radiation exposure doses in Iwaki city of Fukushima prefecture, using a whole-body counter. The first screening was conducted from October 2012 to February 2013, and the second screening was conducted from May to November 2013. Study participants were employees of ALPINE and their families who underwent examination. A total of 2,839 participants (1,366 men and 1,473 women, 1-86 years old) underwent the first screening, and 2,092 (1,022 men and 1,070 women, 1-86 years old) underwent the second screening. The results showed that 99% of subjects registered below 300 Bq per body in the first screening, and all subjects registered below 300 Bq per body in the second screening. The committed effective dose ranged from 0.01-0.06 mSv in the first screening and 0.01-0.02 mSv in the second screening. Long-term follow-up studies are needed to avoid unnecessary chronic internal exposure and to reduce anxiety among the residents by communicating radiation health risks.

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Conflict of interest statement

Competing Interests: The authors have declared that no competing interests exist.

Figures

Figure 1
Figure 1. Location of Iwaki city in Fukushima Prefecture.
Figure 2
Figure 2. A vehicle-mounted type of WBC introduced in ALPINE, Iwaki city, Fukushima Prefecture.
a) The large-size car mounted type of WBC. b) The chair equipped with a NaI (T1) scintillation detector.
Figure 3
Figure 3. Participants detected with radiocesium in the first screening (a) and the second screening (b).
Figure 4
Figure 4. Detection rate of radiocesium by age group.
See this image and copyright information in PMC

References

    1. Japanese Government (2011) Discharge of Radioactive Materials to the Environment. In: Report of Japanese Government to the IAEA Ministerial Conference on Nuclear Safety - The Accident at TEPCO's Fukushima Nuclear Power Plant. Available: http://www.iaea.org/newscenter/focus/fukushima/japan-report/ Accessed 2014 April 15.
    1. Kinoshita N, Sueki K, Sasa K, Kitagawa J, Ikarashi S, et al. (2011) Assessment of individual radionuclide distributions from the Fukushima nuclear accident covering central-east Japan. Proc Natl Acad Sci USA 108:19526–19529. - PMC - PubMed
    1. Tagami K, Uchida S, Uchihori Y, Ishii N, Kitamura H, et al. (2011) Specific activity and activity ratios of radionuclides in soil collected about 20 km from the Fukushima Daiichi Nuclear Power Plant: Radionuclide release to the south and southwest. Sci Total Env 409:4885–4888. - PubMed
    1. Ohnishi T (2011) The Disaster at Japan's Fukushima-Daiichi Nuclear Power Plant after the March 11, 2011 Earthquake and Tsunami, and the Resulting Spread of Radioisotope Contamination. Radiat Res 177:1–14. - PubMed
    1. Hayashida N, Sekitani Y, Kozlovsky A, Rafalsky R, Gutevich A, et al. (2011) Screening for 137Cs body burden due to the Chernobyl accident in Korosten City, Zhitomir, Ukraine: 1996-2008. J Radiat Res 52(5):629–633. - PubMed

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