Medical imaging as of 2007 accounted for half of the radiation exposure of those in the United States with CT scans making up two thirds of this amount.
Alates 2007. aastast moodustab meditsiiniline kujutamine pool Ameerika Ühendriikide elanike kiiritusest, kus KT skaneeringud moodustavad kaks kolmandikku sellest.