Over 20 Million People Unnecessarily Exposed To Radiation From CT Scans Each Year, Study Suggests

Twenty million adults -- and one million children -- may be irradiated unnecessarily each year in the US. Recent growth of CT scan use may lead to a significant public health problem. Scientists argue that the potential carcinogenic effects from using CT scans may be underestimated or overlooked. Japanese atomic bomb survivors who were about two miles away from the explosions, actually received radiation doses quite similar to those from a CT scan.