Fig. 4.

Patient 2. a, b Iv-ACT images obtained 12 months after the intervention reveal an unchanged stent configuration and full patency of the stent lumen (a MIP, 0.5-mm slice thickness; b MIP, 10-mm slice thickness). Even small perforating arteries originating through the stent struts can be seen (barrow). c A transverse thick-slice (30 mm) MIP overview image gives a good impression of the insular MCA branches of both sides. d A second thick-slice (15 mm) MIP image oriented parallel to the basilar artery reveals a medium-grade stenosis (arrow) and an anatomic variant of the origin of the superior cerebellar artery