Abstract
Evidence-based imaging is an important tool for the determination of which subjects should undergo imaging and what imaging approach should be applied. This paper includes a summary of the methods of evidence-based imaging, including formulation of a clinically relevant question, searching the medical literature, critically analyzing the data, summarizing the evidence, and applying the evidence to practice. Application of the many validated clinical prediction rules to trauma imaging is also discussed. In addition, the challenges of evidence-based imaging and the needs for future research are detailed.