Microsoft Word - twittertoudai2.docx” ” 2.4mSv mSv (m) (μ) 1mSv = 1000 μSv 10.2mSv 10200μSv 2011 3 15 1 1μSv 100 2.4mSv 2400μSv 100 3 200mSv 200,000μSv 20 1,000mSv 1,000,000μSv 4,000,000μSv 60 50 100mSv 100mSv 0.5% 2 1 50% 100mSv 50.5% 1 1μSv 11.4 100mSv 11.4 100mSv 11 DNA 1μSv/h( ) DNA 1 1 (1000 10 ) 3/16 0.052-0.053 4 100mSv 30 3.17 tweet 100mSv 250mSv 250mSv CT 2~3mSv CT ” ” CT CT CT CT ” ”
