Cardiac Magnetic Resonance Guidance of Implantable Cardioverter Defibrillator Implantation in Non-ischemic Dilated Cardiomyopathy

Who May Qualify: - NIDCM (idiopathic or familial)\* - LVEF ≤35% and presence of fibrosis on CMR - Diagnostic CMR scan - Age ≥18 years - Written willing to sign a consent form - Ability to give willing to sign a consent form Who Should NOT Join This Trial: - ICM \[previous myocardial infarction, previous percutaneous coronary intervention\] - Other cardiomyopathies (hypertrophic cardiomyopathy, arrhythmogenic right ventricular cardiomyopathy, restrictive cardiomyopathy, infiltrative cardiomyopathies \[e.g. cardiac amyloidosis, cardiac sarcoidosis, hemochromatosis and iron overload cardiomyopathy\], left ventricular non-compaction cardiomyopathy, reversible cardiomyopathies \[Takotsubo syndrrome, peripartum cardiomyopathy, chemotherapy induced cardiomyopathy\]. - Myocarditis - Contraindication for CMR at study entry (including severe claustrophobia, pacemaker or ICD, metallic cerebral or intracranial implants, known allergy to gadolinium) - Severe renal insufficiency (creatinine clearance \<30 mL/min) - Current pacemaker or defibrillator in situ - Current indication for device therapy (e.g. secondary prophylaxis after aborted SCD) - Renal impairment defined as an eGFR \<30 milliliters - Age \<18 years - Patients presenting with pregnancy - Patients without willing to sign a consent form - Participation in another randomized trial - Life expectancy \<2 years Always talk to your doctor about whether this trial is right for you.