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Cardiac MR performed in a patient 3 days post primary percutaneous coronary intervention to the left anterior descending coronary artery. Two-chamber long axis late gadolinium enhancement sequence showing full thickness infarct involving the entire anterior left ventricular wall extending onto the apex (white arrow). Subendocardial low signal within the infarct corresponds to a large region of microvascular obstruction. The measured ejection fraction was 25%.
