TABLE 1

Average Yearly Exposure to Radiation According to Nuclear Regulatory Commission (11)

SourceExposure
Natural background310 mrem
Manmade sources310 mrem
Head scan (CT)*200 mrem
Chest x-ray*10 mrem
Dental x-ray*1.5 mrem

  • ↵* Single exposure.

  • Public limit = 100 mrem/y.