Fig. 4. Case with discrepancy between myocardial perfusion imaging and fractional flow reserve.

A. 72-year-old woman with stable angina who underwent myocardial SPECT. Reversible perfusion defect was absent. B. Invasive coronary angiography revealed severe 3-vessel disease (arrows). C. FFR was 0.69 in left anterior descending coronary artery and 0.73 in left circumflex artery, respectively. FFR = fractional flow reserve, LAD = left anterior descending coronary artery, LCX = left circumflex artery, SPECT = single photon emission computed tomography