Used by the International Commission on Radiological Protection and others as a synonym for dose per unit intake, but sometimes also used to describe other coefficients linking quantities or concentrations of activity to doses or dose rates, such as the external dose rate at a specified distance above a surface with a deposit of a specified activity per unit area of a specified radionuclide. ! To avoid confusion, the term dose coefficient should be used with care., doos sisse võetud radioaktiivse aine kogusest