Effect of Distal Embolization on Myocardial Perfusion Reserve After Percutaneous Coronary Intervention. A Quantitative Magnetic Resonance Perfusion Study Selvanayagam, J.B., et al. - Studies have shown that a subset of patients demonstrate persistent impairment in microcirculatory function after percutaneous coronary intervention (PCI). Distal embolization of plaque contents has been postulated as the main mechanism for this...Conclusion: MPRI is reduced in myocardial segments that demonstrate new distal irreversible injury at 24 hours after PCI. These reductions are confined to the segments with injury and do not affect the entire supply territory of the culprit vessel [more...]