Assessment of Myocardial Viability in Ischemic Cardiomyopathy With Reduced Left Ventricular Function Undergoing Coronary Artery Bypass Grafting by Arjomandi Rad, A, Tserioti, E, Magouliotis, DE, Vardanyan, R, Samiotis, IV, Skoularigis, J, Ariff, B, Xanthopoulos, A, Triposkiadis, F, Casula, R, Athanasiou, T