Fig. 1
A T2-weighted MRI (magnetic resonance imaging) showing the large, partially thrombosed fusiform aneurysm of the basilar artery with mass effect and edema of the brainstem; B preinterventional DSA (digital subtraction angiography) run showing the partially thrombosed aneurysm as well as the dysplastic V4 segments of both vertebral arteries; C DSA run after placement of three flow-diverter stents in the basilar artery and right vertebral artery. Additionally the left vertebral artery was endovascularly occluded. D DSA control 1Â year after the procedure shows a complete occlusion of the aneurysm with a sufficient restitution of the vessel anatomy of the treated V4 segment of the right vertebral artery