title: Evaluation of personal dose equivalent using optically stimulated luminescent dosemeters in Marumori after the Fukushima nuclear accident.
abstract: The personal dose equivalent for 36 Marumori residents living in wooden houses was evaluated using optically stimulated luminescent dosemeters after the Fukushima nuclear accident. The cumulative doses to residents over 200 d from 1 September 2011 ranged from 536 to 1490 µSv. In each resident's house, the indoor and outdoor ambient dose equivalents were measured with an NaI scintillation survey meter. A linear relationship with a slope of 0.5 was found between them; however, the ratio of the indoor to the outdoor ambient dose equivalent varied from 0.36 to 1.0. A better linear relationship was observed between the personal dose equivalent and the indoor ambient dose equivalent compared with that between the personal dose equivalent and the outdoor ambient dose equivalent. These results indicate that the individual exposure dose depends on the indoor ambient dose equivalent rather than the outdoor ambient dose equivalent. These results should be very helpful in obtaining the countermeasures to reduce residents' exposure dose.
authors.affiliation: Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aramaki-Aoba, Aoba-ku, Sendai 980-8578, Japan. hiroko@m.tohoku.ac.jp
authors.forename: Hiroko
authors.initials: H
authors.lastname: Yoshida-Ohuchi
authors.forename: Noriyasu
authors.initials: N
authors.lastname: Hirasawa
authors.forename: Ikuo
authors.initials: I
authors.lastname: Kobayashi
authors.forename: Takeshi
authors.initials: T
authors.lastname: Yoshizawa
mesh_terms: D001822:Body Burden; D004867:Equipment Design; D019544:Equipment Failure Analysis; D062406:Fukushima Nuclear Accident; D006801:Humans; D055096:Optical Devices; D011829:Radiation Dosage; D011847:Radioactive Fallout / Q000032:analysis*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013819:Thermoluminescent Dosimetry / Q000295:instrumentation*
chemical_list: D011847:Radioactive Fallout