Fig. 2

DSA imaging of patient 2. A1–A5 were 2D-DSA images of pre-, post-operation, and follow-up for 3, 6 and 35 months. The small aneurysm at the superior wall of the internal carotid artery (red arrow) exhibited an occlusion tendency but demonstrated persistent filling, while the inferior wall aneurysm (green arrow) showed complete occlusion at the 3-month follow-up evaluation