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The aims of this study were to evaluate the accuracy of preliminary interpretations of emergency neuroradiologic computed tomographic (CT) scans after hours by on-call radiology residents and to assess the clinical impact of residents' errors at a level I trauma center.

A quality assurance database of neuroradiologic CT examinations was reviewed to compare preliminary interpretations by on-call residents with final analyses by attending neuroradiologists during a 12-month period. All disagreements were reviewed for confirmation of the findings and categorized as significant or nonsignificant. Significant errors were further classified as acute intracranial, acute extracranial, and nonacute. Medical records for scans with significant errors were reviewed to evaluate any negative impact on the patient for each significant case. Residents' postgraduate years were also recorded.

There …