title: Whole-body counter survey results 4 months after the Fukushima Dai-ichi NPP accident in Minamisoma City, Fukushima.
abstract: Using the first WBC unit installed in Fukushima Prefecture after the accident, the radiocesium body burdens of 566 high-risk residents of Minamisoma city were measured in July 2011 at the Minamisoma Municipal General Hospital. The analysis of the data was challenging because this chair-type, WBC unit, did not have sufficient shielding against background gamma rays and methods had to be developed to reliably compensate for the body-attenuated background radiation. Fortunately, data for repeated tests of hospital staff members using both the chair-type and well-shielded FASTSCAN WBC units, installed in September 2011, were available and could be used to check the validity of the analysis. The CEDs of all subjects, estimated under the assumption of acute inhalation in March 2011, were found to be less than 1 mSv.
authors.affiliation: Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
authors.forename: Ryugo S
authors.initials: RS
authors.lastname: Hayano
authors.forename: Yuni N
authors.initials: YN
authors.lastname: Watanabe
authors.forename: Shuhei
authors.initials: S
authors.lastname: Nomura
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Nemoto
authors.forename: Masaharu
authors.initials: M
authors.lastname: Tsubokura
authors.forename: Tatsuo
authors.initials: T
authors.lastname: Hanai
authors.forename: Yuki
authors.initials: Y
authors.lastname: Kumemoto
authors.forename: Satoshi
authors.initials: S
authors.lastname: Kowata
authors.forename: Tomoyoshi
authors.initials: T
authors.lastname: Oikawa
authors.forename: Yukio
authors.initials: Y
authors.lastname: Kanazawa
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001822:Body Burden; D002588:Cesium Radioisotopes / Q000032:analysis; D004781:Environmental Exposure / Q000706:statistics & numerical data*; D005260:Female; D062406:Fukushima Nuclear Accident; D019538:Health Care Surveys; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000706:statistics & numerical data*; D018570:Risk Assessment; D014505:Urban Population / Q000706:statistics & numerical data*; D014915:Whole-Body Counting / Q000706:statistics & numerical data*; D055815:Young Adult
chemical_list: D002588:Cesium Radioisotopes