Radiation is everywhere—in the air we breathe, the water we drink, the walls of our homes and offices, emanating from microwaves, at the dentist, and at the doctor if we break a bone. And we’re told, for the most part, that a certain amount of exposure is safe.
But what if some of that turns out to be wrong? It may just be—at least when it comes to one common diagnostic procedure, the computed tomography scan, commonly known as a CT scan.
