Inclusion Criteria:  • Patients presenting for viability assessment in to cardiac MRI unit, Assiut university heart hospital, with a history of previous stemi, at least 3 months after the acute event ( scar stabilization) and up to one year  Exclusion Criteria:  Patients with:  Contraindication to cardiac MRI (claustrophobia, Patients with eGFR below 30 mL/min/1.73 m2. and patients with metallic implants) Non-ischemic cardiomyopathy. Valvular heart disease (VHD).