App for courses of the Dutch Society of Radiology (NVvR) and conferences. The RAD app can be used to support include the Sandwich Courses and Radiologists Days. Access to the app is restricted to members of the NVvR and participants in its activities.The NVvR represents the interests of its members, helps ensure good accessibility and quality of radiology and contributes to a positive image of radiology and radiologists in the Netherlands.