To reduce exposure try the following:avoiding sources of radiationshielding to block radiationdecontamination if the radiation source is in dust or liquid form on skin and/or clothingiodine tablets to protect the thyroid gland from iodine-131 if presentetc.These will have to be adapted depending on the exact type and source of radiation. For example some sources can't be avoided, shielding that works for one type of radiation doesn't for another, etc.