
Keywords: LCx، شریان کرونر چپ چپ; off-pump CABG; saphenous vein; myocardial SPECTCABG, coronary artery bypass grafting; CI, confidence interval; LAD, left anterior descending coronary artery; LCX, left circumflex coronary artery; MIBI, methoxyisobutylisonitrile; RCA, right coronary artery