Doubts grow over high-tech CT scans of heart

There is now more evidence that physicians shouldn't rush to use million-dollar scanners to look for heart disease: Doctors using 64-slice CT scans often identify blockages in the arteries around the heart when no blockages are actually present, according to a study of 360 patients. The findings are a troubling sign for a test that costs hundreds of dollars and subjects the patient to a high dose of radiation, according to this item from the Wall Street Journal Health Blog.