Typical doses and dose rates in studies pertinent to radiation risk inference at low doses and low dose rates

Unexpected Behaviour of Polystyrene Based Scintillating Fibers During Irradiation at Low Doses and Low Dose Rates

Low Doses and Radiation Risk in vivo

The “Linear No Threshold” hypothesis, used in all radiation protection practices, assumes that all doses, no matter how low, increase risk. However, in human and other mammalian cells, low doses of low LET radiation such as gamma and X-rays induce an adaptive response that protects against both radiation-induced and spontaneous risk. An in vivo test of the hypothesis in mice showed that a 100-m...

Epidemiological studies of cataract risk at low to moderate radiation doses: (not) seeing is believing.

The prevailing belief for some decades has been that human radiation-related cataract occurs only after relatively high doses; for instance, the ICRP estimates that brief exposures of at least 0.5-2 Sv are required to cause detectable lens opacities and 5 Sv for vision-impairing cataracts. For protracted exposures, the ICRP estimates the corresponding dose thresholds as 5 Sv and 8 Sv, respectiv...

Signal transduction processes in response to low dose ionizing radiation doses expected during space flight

A major issue affecting our plans to visit and one day inhabit other planets is that once outside the protective influence of our atmosphere, astronauts will experience dramatically increased exposure to ionizing radiation (IR). While shielding spacecraft can minimize effects, exposure to significant levels of both high and low linear energy transfer (LET) IR is inevitable. Understanding the ef...

Cancer risk at low doses of ionizing radiation: artificial neural networks inference from atomic bomb survivors

Cancer risk at low doses of ionizing radiation remains poorly defined because of ambiguity in the quantitative link to doses below 0.2 Sv in atomic bomb survivors in Hiroshima and Nagasaki arising from limitations in the statistical power and information available on overall radiation dose. To deal with these difficulties, a novel nonparametric statistics based on the 'integrate-and-fire' algor...