1. Testing and labeling medical devices for safety in the magnetic resonance (MR) environment: guidance for industry and Food and Drug Administration staff Publication: [Silver Spring, MD] : Center for Devices and Radiological Health, May 20, 2021 Subject(s): Device ApprovalEquipment SafetyMagnetic Resonance Imaging -- instrumentationProduct LabelingUnited StatesUnited States. Department of Health and Human ServicesUnited States. Food and Drug Administration