Life online is all about sharing images. Being able to share medical images would make health care a lot easier, patients say. Science Photo Library/Corbis hide caption

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Doctors' use of CT head scans for hospitalized patients didn't change when the prices were revealed at the time an order was being made. Wikimedia Commons hide caption

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Isabel Doran, 4, gets a CT scan at Children's National Medical Center with her mom, Veronica Doran. The X-ray radiation in CT scans raises the risks for cancer, including leukemia, a new study shows. Dayna Smith/The Washington Post/Getty Images hide caption

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CT Scans Boost Cancer Risks For Kids

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Dr. Steven Birnbaum positions a patient inside a CT scanner at Southern New Hampshire Medical Center in Nashua, N.H., in June 2010. Jim Cole/AP hide caption

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Republican presidential candidate Gov. Rick Perry of Texas prepares to speak at a dinner in Bettendorf, Iowa, Monday. Two years ago Perry signed into Texas law an insurance mandate covering controversial tests for heart disease. Charlie Neibergall/AP hide caption

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