Coronary Artery StentingImpact of Coronary Artery Stenting on Quantitative Myocardial Blood Flow and Health Status

Inclusion Criteria:

1. The index clinically-indicated rest/regadenoson stress myocardial perfusion PET study shows at least one reversible perfusion defect; and
2. The MBFR measurement meets quality control criteria for accuracy; and
3. The patient has completed a baseline SAQ-7 and RDS survey with a SAQ-7 Angina Frequency Score <100 (indicating the occurrence of at least some angina symptoms over the past 4 weeks); and
4. The patient has undergone a successful coronary artery stenting within 60 days after the PET scan without a significant change in clinical condition between the time of baseline PET MPI test and PCI; and 5. The patient agrees to undergo a second PET scan 3-6 weeks after coronary artery stenting and to complete a second SAQ-7 and RDS survey.

Exclusion Criteria:

1. EF <40%
2. Significant aortic stenosis/regurgitation
3. Significant Mitral stenosis/regurgitation)
4. Prior CABG
5. Poor quality base line PET study due one or more technical challenges (e.g. patient motion, imprecise registration of CT and emission data, flows that violate quality criteria, lack of flow augmentation suggestive of an A2A antagonist)