Repeated computed tomographic scans in transferred trauma patients: Indications, costs, and radiation exposure.

Background: Trauma patients are often transferred to regional Level I trauma centers from other institutions. At times, when the patient presents to the trauma center, radiologic studies performed at the previous institution are repeated. The aim of this study was to assess the proportion of computed tomographic (CT) scans repeated in trauma patients receiving CT scans before transfer and to obtain the indications for these repeats.