We've heard for some time now that non-invasive medical imaging is driving up Medicare costs. But a new study published in the Journal of the American College of Radiology concludes that the technology's price tag has actually dropped by double-digits in recent years. The researchers determined that the tech's costs to Medicare Part B plunged 21% from 2006 to 2010. Why the drop? Credit reimbursement cuts helped reduce the price tag, the researchers note. Release