Screening for lung cancer can catch tumors but it can also produce false positives. Patients need to decide whether it's right for them, but doctors often don't know how to advise them.
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Critics of Anthem's policy say imposing a blanket rule that gives preference to freestanding imaging centers is at odds with promoting quality and will lead to fragmented care for patients.
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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.
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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.