One CT scan of the head delivers the equivalent of up to eight months of background radiation; a CT scan of the abdomen is equal to up to 20 months of background radiation, according to Image Gently.

New full-body airport security scanners using X-rays generate much lower doses than normal background radiation, a draft report compiled by international agencies says. Such devices, which cost about ...

» How do PET/CT radiation doses compare with doses from other examinations? » Can repeated radiological procedures on the same patient increase the radiation risk? » Does diabetes have any additional ...

What do granite countertops, bananas and airports have in common? They're all emitting low-level radiation — constantly. Yet, according to toxicologists, people aren't coming into their offices with ...