Article-at-a-Glance Background Multiple, validated, evidence-based guidelines exist to
inform the appropriate use of computed tomography (CT) to differentiate mild traumatic brain
injury (MTBI) from clinically important brain injury and to prevent the overuse of CT. Yet, CT
use is growing rapidly, potentially exposing patients to unnecessary ionizing radiation risk
and costs. A study was conducted to quantify the overuse of CT in MTBI on the basis of
current guideline recommendations. Methods A retrospective analysis of secondary data …