EditorEmergency departments in the United States are frequently confronted with trauma patients with varying degrees of injury. Clinically significant injuries may be missed, with devastating consequences for the patient. Concern for not missing any potentially serious injuries has led to an aggressive diagnostic approach with a goal of not missing any injuries. The CT scan has facilitated this approach, providing substantial information guiding management. However, CT scans have risks, especially when the pan-scan approach is used. The authors review the uses, advantages, and disadvantages of the pan-scan.