Brian D. Williamson et al. JACEP 2017;3:1231-1239 Safety Considerations for MRI in Patients With an MRI-Conditional Pacing System Even in devices labeled as MRI conditional, a protocol of uniformly checking device function pre-scan, identifying pacemaker dependency, careful rate programming, monitoring during scanning, and post-MRI device evaluation for events is important to ensure patient safety. MRI = magnetic resonance imaging; PCT = pacing capture threshold. Brian D. Williamson et al. JACEP 2017;3:1231-1239 2017 The Authors