Fig.8. Reconstruction of spiral CT-angiogram (A): a fusiform aneurysm of the basilar artery (Case 8). Vertebral angiogram, a lateral view (B): a giant fusiform aneurysm of the basilar artery. Craniogram after implantation of the fist LEO stent (C). Craniogram after implantation of the second LEO stent (D): rumpling and shortening of the stents. Acute occlusion of the basilar artery at the level of the stents (E, F, G). Control bilateral carotid angiograms: filling of the bifurcation of the basilar artery and cerebellar arteries due to flow through the PCoA (H, I).