TY - JOUR
T1 - A strategy for a rapid radiological screening survey in large scale radiation accidents
T2 - A lesson from an individual survey after the fukushima daiichi nuclear power plant accidents
AU - Ohba, Takashi
AU - Miyazaki, Makoto
AU - Sato, Hisashi
AU - Hasegawa, Arifumi
AU - Sakuma, Mitsuo
AU - Yusa, Takeshi
AU - Shishido, Fumio
AU - Ohtsuru, Akira
PY - 2014/7
Y1 - 2014/7
N2 - To establish a strategy for a rapid screening survey of surface contamination among a large number of people after nuclear power plant (NPP) accidents, the authors analyzed the measured surface contamination of subjects. From 12 March through 25 March 2011, a screening survey was conducted in a hospital on 336 subjects who had stayed within a 50-km radius of the Fukushima Daiichi NPPs. The count rates from measuring points of each subject were measured and compared in association with individual characteristics such as survey timing, gender, age, and distance between their location and the Fukushima Daiichi NPPs. The count rates from the head, hands, and clothes of subjects were correlated to the survey timing and distance by multiple regression analyses. When subjects were divided into two-by-two groups of survey timing and distance, the count rates from hands were not significantly different from those of the head and clothes. However, the count rates from the shoes of the subjects, excluding one group, were significantly higher than those of the other points. In addition, the count rate from a married couple showed a significant correlation. These findings suggest that measurement of at least two regions, such as one hand and one shoe, can be used as representative survey data in order to save surveillance time for a large number of people.
AB - To establish a strategy for a rapid screening survey of surface contamination among a large number of people after nuclear power plant (NPP) accidents, the authors analyzed the measured surface contamination of subjects. From 12 March through 25 March 2011, a screening survey was conducted in a hospital on 336 subjects who had stayed within a 50-km radius of the Fukushima Daiichi NPPs. The count rates from measuring points of each subject were measured and compared in association with individual characteristics such as survey timing, gender, age, and distance between their location and the Fukushima Daiichi NPPs. The count rates from the head, hands, and clothes of subjects were correlated to the survey timing and distance by multiple regression analyses. When subjects were divided into two-by-two groups of survey timing and distance, the count rates from hands were not significantly different from those of the head and clothes. However, the count rates from the shoes of the subjects, excluding one group, were significantly higher than those of the other points. In addition, the count rate from a married couple showed a significant correlation. These findings suggest that measurement of at least two regions, such as one hand and one shoe, can be used as representative survey data in order to save surveillance time for a large number of people.
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U2 - 10.1097/HP.0000000000000044
DO - 10.1097/HP.0000000000000044
M3 - Article
C2 - 24849900
AN - SCOPUS:84901455717
SN - 0017-9078
VL - 107
SP - 10
EP - 17
JO - Health Physics
JF - Health Physics
IS - 1
ER -