19 November is the Great American Smokeout®, a day designated for people across the country to make a commitment to quit smoking.

If you’re ready to join nearly 20 million Americans this month by committing to quit smoking, then it’s important to get some help.

Full body X-ray computed tomography (CT) and computerized axial tomography (CAT) scans are being marketed as the latest trend in preventive medicine. But are they worth the cost and exposure to harmful radiation?