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Good or useless, medical scans cost the same

New York Times, March 2, 2009

More than 95 million high-tech scans are done each year, and medical imaging has ballooned into a $100-billion-a-year industry in the United States, with Medicare paying for $14 billion of that. But recent studies show that as many as 20% to 50% of the procedures should never have been done because their results did not help diagnose ailments or treat patients.