A study found that the radiation from CT scans—the tests regularly used to
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internal injuries or signs of cancer—is likely
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for 2 percent of cancer cases in the United States.
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lots of Americans undergo CT scans, that research is unlikely to
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in doctors" offices: Two-thirds of patients in a new JAMA study reported
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nothing of the risks of the diagnostic procedure.
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, 17 percent felt like they played an active role in a discussion
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, whether this diagnostic test was the best path forward.
"Our study indicates that most decisions to undergo outpatient CT are
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by physicians and risk communication is
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," a team of researchers led by University of Colorado"s Tanner Caverly writes. "The risk communication that took place had limited
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: respondents who recalled discussing the benefits and risks of imaging did not have better
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."
Would a conversation about the
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risks have made a difference Caverly"s team asked a few other questions
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suggest it would: Patients undergoing the scan have little idea about the radiation
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. One-quarter self-identified radiation as a risk of a CT scan; 37 percent were able to identify CT scans as having a higher level of radiation
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a chest x-ray.
There"s a growing movement in medicine right now to
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on unnecessary treatment or
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of care. Much of this has been led by a group called Choosing Wisely, which has
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with dozens of medical societies to come up with lists of
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that doctors themselves don"t think they ought to be using.
One of their key messages is that more care isn"t necessarily better; all medicine comes with some level of risk. That message does not,
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, seem to be delivered in the doctor"s offices studied here.