搜到一个关于辐射量的说明和比较(ZT)

来源: dudaan 于 2010-11-19 06:25:33 [档案] [博客] [旧帖] [给我悄悄话] 本文已被阅读：次 (1190 bytes)

回答: 专家警告：美国机场裸体全身扫描仪可致癌（ZT）由 ERommel 于 2010-11-18 21:14:27

The Health Physics Society (HPS) reports that a person undergoing a backscatter scan receives approximately 0.05 μSv (or 0.005 mrems) of radiation; American Science and Engineering Inc. reports 0.09 μSv (0.009 mrems). At the high altitudes typical of commercial flights, naturally occurring cosmic radiation is considerably higher than at ground level. The radiation dose for a six hour flight is 20 μSv (2 mrems) - 200 to 400 times larger than a backscatter scan. According to U.S. regulatory agencies, "1 mrem per year is a negligible dose of radiation, and 25 mrem per year from a single source is the upper limit of safe radiation exposure".^[11]

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