STUDY END POINTS. The primary study end point was the binary rate of restenosis in the treated segment within 6 months postintervention by computed tomography angiography (CTA) or digital subtraction angiography (DSA). Restenosis was defined as a >50% lumen diameter reduction in the worst angiographic view at the most narrow site within the limits of the treated segment plus the adjacent ten millimeters proximal and distal to the treated segment.