SJM MRI Diagnostic Imaging Registry (IDE)

Inclusion Criteria:

1. Patient is implanted with a market-released St. Jude Medical pacemaker, ICD, or CRTcurrent generation device listed in the study protocol and any market-released pacingor defibrillation lead.

2. Patient's device and all leads must be implanted for at least 6 weeks prior to thescheduled date of the MRI.

3. Patient has a clinical indication for a non-thoracic MRI scan, where MRI is theimaging modality of choice that will give adequate results to manage the patient.

4. Patient is scheduled for a non-thoracic MRI scan up to 1.5T.

5. Patient has a pacemaker, ICD, or CRT device implanted pectorally.

6. Patient has the ability to provide informed consent for study participation and bewilling and able to comply with the study procedures.

7. Patient is 18 years or above, or of legal age to give informed consent specific tostate and national law.

Exclusion Criteria:

1. Patient has an ICD/CRT-D and is pacemaker dependent

2. Capture threshold is greater than 2.5 volts at 0.5 ms for RA and RV leads

3. Pacing lead impedance is NOT within range (i.e. ≥ 200 and ≤ 2000 ohms)

4. High voltage lead impedance (HVLI) is NOT within range (i.e. ≥ 20 and ≤ 200 ohms)

5. Patient has a device generator battery voltage at elective replacement interval (ERI)

6. Patient has another existing active implanted medical device (e.g. neurostimulator,infusion pump, etc.) that has MR labeling that will not allow the MRI scans to becompleted.

7. Patient has other non-MRI compatible device or material implanted NOTE:

• MRI compatible knee replacements, hip replacements, stents, etc. may be includedas long as the labeling of these devices allow MRI scans conducted per thisprotocol

• MRI compatible mechanical, prosthetic, and bioprosthetic heart valves may beincluded as long as the labeling of these devices allow for MRI scans conductedper this protocol

• Non-removable dental implants may be included

8. Patient has a lead extender, adaptor, or capped/abandoned lead

9. Patient is pregnant