Inclusion Criteria:  Age > or = 18 years old Ischemic heart disease Ability of the subject to understand and express his consent Affiliation to the social security scheme  Exclusion Criteria:  Major obesity (> 140kg) not allowing the patient to enter the tunnel of the machine whose diameter is less than 70cm Under 18 years old Pregnant woman Known allergy to gadolinium chelates Claustrophobia Any contraindication to MRI Arrhythmia Difficulty in holding apneas of more than 10 seconds