In this issue of Radiologic Clinics, guest editors Drs. Douglas S. Katz and John J. Hines bring their considerable expertise to the topic of Current Evidence for Selected Topics in Diagnostic and Interventional Radiology. Current evidence in radiology asks the question: what is the most appropriate imaging test on the basis of the best available evidence, the physician's experience, and the patient's expectations? In this issue, top experts review current controversies in radiology and the evidence used to support or contradict the clinical question asked.