Fig. 1 Graph of graft patency shows deterioration rates over 10 years and the comparative superiority of using the internal mammary artery (IMA) instead of the saphenous vein (SVG).http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3528239/bin/25FF1.gif Percutaneous Transluminal Coronary Angioplasty ...