Table 4.

Specifications, definitions, and management strategies for patients with CIED undergoing MR procedures

Device specifications	Definitions	Advice for MRI
MRI-conditional	All components of the device are tested as MRI-conditional	Cleared for 1.5 T and if specified also for 3.0 T MRI, monitored setting advised
MRI-non-conditional	Manufacturer not cleared for use in MRI conditions, combination of parts of different manufacturers	1.5 T MRI may be performed, precautions and monitoring advised
MRI-unsafe	Fractured leads, lead extenders	No data on MRI safety available

MRI, magnetic resonance imaging.