Success factors for interventions to reduce low-value imaging. Six crucial lessons learned from a practical case study in Norway.

Background: Substantial overuse of health care services is identified and intensified efforts are incited to reduce low-value services in general and in imaging in particular.

Objective: To report crucial success factors for developing and implementing interventions to reduce specific low-value imaging examinations based on a case study in Norway.

Materials And Methods: Mixed methods design including one systematic review, one scoping review, implementation science, qualitative interviews, content analysis of stakeholders' input, and stakeholder deliberations.