Elective full-body computed tomography (CT) scans in healthy individuals
have long been controversial because of uncertainties surrounding their ability
to detect hidden disease. Now, researchers report that radiation from a single
full-body CT examination corresponds to a dose comparable with a level of
radiation linked to increased cancer mortality in low-dose atomic bomb survivors
from Hiroshima and Nagasaki, in Japan (Radiology.
Hampton T. Full-Body CT Scans Scale Up Cancer Risk. JAMA. 2004;292(14):1669. doi:10.1001/jama.292.14.1669