Coronary artery bypass grafting (CABG) remains the preferred revascularization modality for the elective treatment of patients with complex three vessel coronary artery disease. There is evidence that the use of additional arterial grafts such as right internal mammary artery (RIMA) and Radial Artery (RA); are associated with improved long-term patency. Stenosis of arterial grafts can occur in some patients postoperatively. We describe the first use of OCT in the evaluation of suspected conduit stenosis in Total Arterial Revascularisation.