title: The Fukushima Health Management Survey: estimation of external doses to residents in Fukushima Prefecture.
abstract: The Fukushima Health Management Survey (including the Basic Survey for external dose estimation and four detailed surveys) was launched after the Fukushima Dai-ichi Nuclear Power Plant accident. The Basic Survey consists of a questionnaire that asks Fukushima Prefecture residents about their behavior in the first four months after the accident; and responses to the questionnaire have been returned from many residents. The individual external doses are estimated by using digitized behavior data and a computer program that included daily gamma ray dose rate maps drawn after the accident. The individual external doses of 421,394 residents for the first four months (excluding radiation workers) had a distribution as follows: 62.0%, <1 mSv; 94.0%, <2 mSv; 99.4%, <3 mSv. The arithmetic mean and maximum for the individual external doses were 0.8 and 25 mSv, respectively. While most dose estimation studies were based on typical scenarios of evacuation and time spent inside/outside, the Basic Survey estimated doses considering individually different personal behaviors. Thus, doses for some individuals who did not follow typical scenarios could be revealed. Even considering such extreme cases, the estimated external doses were generally low and no discernible increased incidence of radiation-related health effects is expected.
authors.affiliation: Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University.
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Ishikawa
authors.affiliation: Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University.
authors.forename: Seiji
authors.initials: S
authors.lastname: Yasumura
authors.affiliation: Department of Epidemiology, Radiation Effects Research Foundation. 5-2 Hijiyama Park, Minami-ku, Hiroshima City, 732-0815 Japan.
authors.forename: Kotaro
authors.initials: K
authors.lastname: Ozasa
authors.affiliation: National Institute of Radiological Sciences. 4-9-1, Anagawa, Inage-ku, Chiba City, 263-8555 Japan.
authors.forename: Gen
authors.initials: G
authors.lastname: Kobashi
authors.affiliation: National Institute of Radiological Sciences. 4-9-1, Anagawa, Inage-ku, Chiba City, 263-8555 Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Yasuda
authors.affiliation: Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University.
authors.forename: Makoto
authors.initials: M
authors.lastname: Miyazaki
authors.affiliation: National Institute of Radiological Sciences. 4-9-1, Anagawa, Inage-ku, Chiba City, 263-8555 Japan.
authors.forename: Keiichi
authors.initials: K
authors.lastname: Akahane
authors.affiliation: National Institute of Radiological Sciences. 4-9-1, Anagawa, Inage-ku, Chiba City, 263-8555 Japan.
authors.forename: Shunsuke
authors.initials: S
authors.lastname: Yonai
authors.affiliation: Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University.
authors.forename: Akira
authors.initials: A
authors.lastname: Ohtsuru
authors.affiliation: Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University.
authors.forename: Akira
authors.initials: A
authors.lastname: Sakai
authors.affiliation: Department of Epidemiology, Radiation Effects Research Foundation. 5-2 Hijiyama Park, Minami-ku, Hiroshima City, 732-0815 Japan.
authors.forename: Ritsu
authors.initials: R
authors.lastname: Sakata
authors.affiliation: 1] Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University [2] Research Institute for Radiation Biology and Medicine, Hiroshima University.
authors.forename: Kenji
authors.initials: K
authors.lastname: Kamiya
authors.affiliation: Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University.
authors.forename: Masafumi
authors.initials: M
authors.lastname: Abe
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D005260:Female; D062406:Fukushima Nuclear Accident; D005720:Gamma Rays; D006306:Health Surveys; D049674:History, 21st Century; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007564:Japan; D008297:Male; D008875:Middle Aged; D055848:Nuclear Power Plants / Q000266:history; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000295:instrumentation / Q000379:methods*; D011874:Radiometry / Q000295:instrumentation / Q000706:statistics & numerical data*; D011795:Surveys and Questionnaires; D055815:Young Adult