Medical News Today -- A recent study raises questions about the frequency of doctors' use of elective heart angiograms, which showed no disease in almost 40 percent of patients. BusinessWeek reports: "Doctors may be sending patients too quickly for elective angiograms to detect heart disease, exposing them to radiation and driving up U.S. health-care costs, a study suggests. An analysis of records of about 400,000 patients concluded that 37.6 percent who underwent angiography to find obstructed heart arteries showed evidence of significant blockage, according to research published today in the New England Journal of Medicine. A total of 39.2 percent displayed none."
