Radiobiology 2016

Summary: Radiation 2 • For working populations , ICRP suggests risk estimates of excess cancer mortality: 8.2 × 10 -2 per sievert for high doses and high dose rates 4.1 × 10 -2 per sievert for low doses and low dose rates • For the general population , ICRP risk estimates are: 11.0 × 10 -2 per sievert for high doses and high dose rates 5.5 × 10 -2 per sievert for low doses and low dose rates • Workers in the nuclear industry are not more likely to develop cancer than non-nuclear workers • Irradiation in utero by diagnostic X rays gives RR = 1.4 for leukemia and childhood cancers. This is high because malignancies in children are rare, but absolute risk is about 6% per gray, similar to risk in adult A-bomb survivors