IMR results measured by temperature dilution method: 13.76 for LAD, 10.78 for LCX and 33.84 for RCA. Pa, the aortic pressure; Pd, the distal coronary pressure; CFR, coronary flow reserve; FFR, fractional flow reserve; IMR, index of microcirculatory resistance; LAD, left anterior descending; LCX, left circumflex; RCA, right coronary artery; Tmn, mean transit time.