But a year ago Medicare cut the price it pays for imaging, so Gruen gets paid 15% to 50% less for each order, depending on the type of scan.

FORBES: Cranking Up the Volume

After the stress test, your cardiologist may or may not opt to have you undergo another type of CT test called a Calcium-score Screening Heart Scan.

FORBES: My Visit with a Cardiologist, and What You Should Know About Your Heart

If we are to have medicines tailored to our own versions of specific diseases, rather than the one-size-fits-all type of potions and pills with which we're treated today, then each of us will need a genome scan in our medical files.

ECONOMIST: Peering into your medical future is risky