Head CT for Nontrauma Patients in the Emergency Department: Clinical Predictors of Abnormal Findings

PURPOSE: To identify predictors of clinically important abnormal findings in computed tomography (CT) images of the head among emergency department (ED) patients without a history of trauma. MATERIALS AND METHODS: Approval was obtained from the institutional research ethics board, and informed consent from patients was not required. This study was a retrospective review of consecutive unenhanced head CT examinations in patients aged 18 years or …