Many providers don't follow current guidelines recommending that patients with uncomplicated headaches not be screened with CT or MRI, according to a study presented at the annual meeting of the American Neurological Association. Researchers looked at data from the National Ambulatory Medical Care Surveys from 2007 to 2010 and found that 9.1% of patients with chronic primary headache and 13.6% of migraine patients were given orders for neuroimaging scans during routine primary care visits.

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