Super X-rays beneficial to heart care?

Instead of over a million invasive cardiac catheterizations performed each year to look for clogged arteries, would a new type of x-ray be a better method to search for the same thing?

Possibly, according to some medical experts. This "super X-ray" should be cheaper, faster and painless as a new way to find the potential or existence of heart disease without invading the human body to search for clues.

In a sense, experts state that using these super x-rays would most likely eliminate the 1.3 million cardiac procedures that are needed each year in the U.S. Will insurers pay for these new x-rays, even if they are cheaper? These x-rays, just like normal ones, supply quite a bit of radiation to the patient. Is that supposed to be considered better?