The absorbed dose rate is the admitted dose per time unit.

See Absorbed Dose.

The eye dose equivalent is the radiation dose of the lens of the eye taken by external exposure. The dose equivalent is calculated at a tissue depth of 0.3 centimeters (300 mg/cm2).

The deep dose equivalent is related to the dose in tissue at a depth of one centimeter due to external radiation. Also called personnel dose equivalent at a depth of 1 cm. The unit for deep dose equivalent is J/kg or sievert (Sv).

(rad) One rad is the absorbed radiation dose of 100 ergs of energy by one gram or 0.01 joules of energy by one kilogram of matter. In the SI system of units, the rad is replaced by the gray (Gy). 1 Gy = 100 rad. See also Absorbed Dose Rate.

The collective effective dose is the product of the mean effective dose for a population and the number of individuals; or the sum of all individual effective doses in the population of concern.