IntravasCular Imaging-Guided Versus AngiogRaphy-GUided Drug-Eluting Stent Implantation for Fermoropopliteal Artery Disease

Brief Summary

Objectives: 1) To evaluate the feasibility of using intravascular ultrasound to assess lesion morphology, select an appropriate stent size and landing zone 2) To compare the primary patency rates after intra vascular imaging-guided versus angiography-guided stent implantation for the treatment of fermoropopliteal artery segment lesions. Hypothesis: One of the key determinants of the device failure is inappropriate landing zone, selection of smaller stent relative to the reference vessel diameter, and lack of high-pressure post-dilatation in a necessary post-stent segment. Therefore, intravascular ultrasound-guided selection of appropriate landing zone, stent size and balloon size for high pressure post-dilation may maximize the benefits of stent use and improve patency duration. the investigators hypothesize that intravascular ultrasound-guided stent implantation is superior to angiography-guided stent implantation with respect to 12 months primary patency in patients with significant femoropopliteal disease