Safety and Clinical Outcomes of Magnetic Resonance Imaging in Patients With Cardiac Implantable Electrical Devices

Inclusion Criteria: * Patients have a medically/clinically indicated need for an MRI * Patients with a non-MRI conditional pacemaker and/or ICD implanted after the year 2000 * Patients are willing and able to sign consent and HIPAA authorization or an authorized representative of the patient is willing to sign consent for the patient \*The following factors are considered relative contraindications to the clinical protocol at BIDMC, and will similarly be considered exclusion criteria for the study. Exceptions on a case-by-case basis for circumstances of dire, life-threatening need may be considered. * Leads implanted \<6 weeks prior to the MRI * Presence of any capped/abandoned leads * Presence of nontransvenous epicardial leads Exclusion Criteria: * Other contraindications to MRI (e.g. other non-MRI-conditional implants) * Pacemaker or ICD implanted prior to the year 2000 * Leads and/or generator implanted within 6 weeks of the proposed MRI * CIED that is FDA approved as MRI conditional * Pregnant women