When you might need a CT scan: An imaging test might be appropriate if you have an abnormal neurological exam ... The problem: Lots of ads pitch CT scans for lung-cancer screening.

The study assessed 276 lung cancer patients at a cancer center for existing atherosclerosis on staging computed tomography (CT) scans. Atherosclerosis is when plaque builds up in the arteries ...

The system, which is still early in its development, could eventually replace CT scans as a first-line screening measure for suspected lung cancer patients. The test hunts for tumor DNA that is ...