title: A noninvasive technic for determining patency of saphenous vein coronary bypass grafts.
mesh_terms: D000790:Angiocardiography; D001026:Coronary Artery Bypass; D003326:Coronary Circulation; D004562:Electrocardiography; D005069:Evaluation Studies as Topic; D006801:Humans; D008722:Methods; D012501:Saphenous Vein / Q000637:transplantation; D014182:Transplantation, Autologous; D014465:Ultrasonics