The biological effects of ionizing radiation vary with the type and energy. A measure of the risk of biological harm is the dose of radiation that the tissues receive. The unit of absorbed radiation ...

Variation in the amounts of radioactivity that is associated with dose calibration and administration of gamma-emitting radioactive drugs was studied. Health systems use radionuclide dose ...

That’s called “background” radiation. Experts use the phrase “effective dose” to describe how much radiation your body absorbs. Different types of tissue are more sensitive than others.