Event-Based Learning and Improvement: Radiology's Move From Peer Review to Peer Learning.

Over the past 15 years, the radiology community has made great progress moving from a system of score-based peer review to one of peer learning. Much has been learned along the way. In peer learning, cases in which learning opportunities are identified are reviewed solely for the purpose of fostering learning and improvement. This article defines peer learning and peer review and emphasizes the difference; looks back at the 20-year history of score-based peer review and transition to peer learning; outlines the problems with score-based peer review and the key elements of peer learning; discusses the current state of peer learning; and outlines future challenges and opportunities.