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American Journal of Roentgenology, Vol 129, Issue 1, 1-3
Copyright © 1977 by American Roentgen Ray Society

Articles

Impact of computed tomography on utilization of cerebral angiograms

EB Larson, GS Omenn, MT Margolis, and JW Loop

In order to assess the effects of computed tomography (CT) of the brain on utilization of cerebral angiography, a retrospective analysis of three cohorts of patients was undertaken. Each cohort consisted of 50 consecutive patients receiving angiography either before a CT scanner was available, after installation of CT, or 1 year after CT. Since availability of CT, a progressive decrease in the proportion of angiograms that are normal has occurred (from 36% to 16%). Patients being evaluated for mass lesions account for the decrease. We conclude that CT is making neurodiagnostic evaluation more efficient and less invasive for patients with suspected mass lesions.
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Copyright © 1977 by the American Roentgen Ray Society.