Visually diagnosed medical tests (e.g. radiographs, electrocardiograms) are the most commonly ordered tests in front-line medicine. As such, front-line health care professionals are faced with the task of learning the skill of interpreting these images to an expert performance level by the time they provide opinions that guide patient management decisions. However, discordant interpretations of these images between front-line physicians and expert counterparts (radiologists, cardiologists) are a common cause of medical error1–9. In …