期刊
RADIATION PROTECTION DOSIMETRY
卷 199, 期 12, 页码 1264-1273出版社
OXFORD UNIV PRESS
DOI: 10.1093/rpd/ncad177
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This study aimed to estimate threshold doses and uncertainties for human health effects after short-term high-dose-rate radiation exposure. Results showed that the effective dose threshold technique provided more accurate and statistically significant threshold dose estimates compared to the quantile technique, which had higher relative uncertainties.
The study aimed to estimate threshold doses and their uncertainties for some human health effects after short-term high dose-rate radiation exposure by quantile technique and the effective dose threshold technique based on distribution functions. The relative uncertainty (U) of the threshold dose was estimated using the error propagation technique. The quantile technique provided statistically significant estimates of threshold doses for acute radiation syndrome onset (0.44 +/- 0.12 Gy, U = 143%) and lethality (1.84 +/- 0.44 Gy, U = 117%) but relative uncertainties were high. The effective threshold dose technique provided statistically significant and more precise threshold dose estimates for acute radiation syndrome onset (0.73 +/- 0.02 Gy, U = 18%) and lethality (6.83 +/- 0.08 Gy, U = 36%), as well as agranulocytosis (3.51 +/- 0.03 Gy, U = 16%) and vomiting onset in the prodromal period (1.54 +/- 0.02 Gy, U = 16%). Threshold doses estimated for the change in the peripheral blood neutrophil and leukocyte counts during the first days after short-term high dose-rate radiation exposure were not statistically significant.
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