Guidelines for radiation protection are based upon an underlying philosophy in which two factors are of prime importance.
First is the assumption that there is no radiation dose so small that it does not involve some degree of risk.
The second major factor to consider is that radiation, like many other developments of modern life, confers great benefit upon both the individual and the society in spite of its small risk to health. Consideration of the extent of these benefits makes a certain degree of risk acceptable. (more)