 The purpose of the study is to investigate the extent of ischemia and left ventricular function in cardiovascular magnetic resonance CMR, as well as patency of coronary arteries and grafts in coronary computed tomography angiography at 12 months follow up in patients with advanced coronary artery disease treated with percutaneous coronary intervention with the implantation of bioresorbable scaffolds or coronary artery bypass graft surgery. 