Fig 2.

Nonsubtracted digital radiography (DR) images of the stents. The DRs of the Neuroform2 and Neuroform2-Treo stents visualize the proximal and distal platinum markers clearly; however, the structure of the stent cells and struts is poorly defined. The Neuroform2 image shows only faintly the prolapse of the struts at the site of the 8-mm opening (dotted blue ellipse). This phenomenon seems to occur to a lesser degree with the Neuroform-Treo stent because of the one extra connector along the circumference of the stent, reducing the area of open cells by about 39%. The Enterprise stent is only visualized by its proximal and distal platinum markers. The stent cells and struts are not defined because of the small size of the stent struts (50 × 50 μm); therefore, the structural details of stent are not visible. The LEO stent is seemingly better visualized throughout its entire length, outlined by 2 platinum wires intertwined along the surface of the stent serving as markers; the stent cells and struts, however, are not identifiable.