Figure 3. Digital subtraction angiography AP view before (left) and after (right) stent-assisted coiling of carotid terminus aneurysm (red star) demonstrating the dual supply to the A2 segment of the left A2 ACA via the A1 segment (double red arrow) and persistent VOA variant (red arrow). After coiling (right), the A2 segment is only supplied by the infraoptic persistent VOA as the A1 segment is occluded by the coils at the neck of the aneurysm.