Figure 1

Example of perfusion measurement in a patient with MPRI of 0.6 in the left anterior descending artery which has 81% stenosis on QCA. A) Perfusion defect (yellow arrow) in anteroseptal wall on left ventricular short axis. Perfusion defect (white arrow) in inferior wall most likely secondary to microvascular obstruction within infarct B) No perfusion defect at rest in anteroseptal wall of left ventricle. Perfusion defect (white arrow) in inferior wall within infarct most likely secondary to microvascular obstruction C) Signal intensity-time curve in anteroseptal wall at stress. Red line represents signal intensity-time curve for left ventricle while blue line represents signal intensity-time curve for anteroseptum segment D) Signal intensity-time curve in anteroseptal wall at rest. Red line represents signal intensity-time curve for left ventricle while blue line represents signal intensity-time curve for anteroseptum segment.