This research could change the investigators understanding of how SCD affects the heart and lungs. The investigators propose studies that will change the current concept of primary pulmonary vasculopathy to a cardiomyopathy-centered model with secondary pulmonary vascular changes leading to sudden death. This translational pilot study will deliver a novel, clear, quantifiable CMR phenotype with established diagnostic performance that will be used in phase II/III clinical trials to test anti-fibrotic therapy to prevent or reverse SCD-related RCM.