As many as two-thirds of adults underwent a medical test in the last few years that exposed them to radiation and in some cases, a potentially higher risk of cancer, a study in five areas of the US suggests.
Study looks at radiation exposure
Dr. James Thrall, chief radiologist at Massachusetts General Hospital, said a big limitation of the study was the lack of information about why the tests were done. Without it, he said, it's impossible to know whether the test was medically necessary.
"There's a risk that people who need a lifesaving or life-improving imaging procedure might not get one" because of radiation worries, said Thrall, who is also chairman of the American College of Radiology's board of chancellors.
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