Figure 3

Planar stent wireframe reconstruction and rolling back to space. Planar computer-aided design of (a) Onyx stent and (d) Synergy stent with the boundaries delineated by red lines. Planar stent reconstruction (black lines) of (b) Onyx and (e) Synergy using the unrolled stent strut points and computer-aided stent designs as reference. The numbers and circles in (a, b, d, e) indicate the location of stent links. Note the extension of black lines beyond the stent boundaries to show the stent continuity for the next steps. Rolling back of 2D reconstructed (c) Onyx stent wireframe and (f) Synergy stent wireframe and volume creation: (c1, f1) 3D reconstructed lumen used as a backbone for the 3D stent reconstruction. The red points are segmented stent strut points, (c2, f2) 3D rolling-back of 2D reconstructed stent wireframe (blue) following the lumen shape, (c3, f3) Original strut points (red) overlapped on the rolled back stent wireframe, (c4, f4) Final stent volume generated from stent wireframe. A tube was added inside the stent wireframe for better visualization (c2, c3, f2, f3). Stent designs were provided by the stent manufacturers.