Fig. 3

Patients with known CAD. Top row: 71-year old female with atrial fibrillation and known CAD (myocardial infarction two years ago) presented for work-up of new ischemia. LGE revealed a transmural infarction of the inferior wall. Stress perfusion demonstrated a reversible perfusion defect of the lateral wall (white arrows), highly suggestive of significant LCX stenosis. This could be confirmed by coronary angiography: LCX had a high-grade proximal stenosis (white arrow), RCA showed coronary plaques, but no significant stenosis. Bottom row: 73-year old male with typical angina, frequent VES, and known CAD (prior stenosis of the LAD, in which PCI was performed 12 years ago). LGE revealed no scar, but stress perfusion demonstrated a large perfusion defect in the lateral wall, suggestive of LCX stenosis. On coronary angiography, severe LCX stenosis could be confirmed