Figure 2.

Embolization of A1A with an “S-shaped” microcatheter tip. A) Angiography showed an A1A with a small neck (arrow). The acute angle formed by the aneurysm and the proximal parent artery made catheterization difficult. B) A retrograde approach was attempted, but compression test showed there was no anterior communicating artery. C) The microcatheter tip was shaped into an “S” shape (arrows) and the shaped tip allowed successful coil delivery into the sac without significant kick-backs. D) Final angiography showed a complete aneurysm occlusion. E) Follow-up angiography (4 months) showed no recurrence of the aneurysm.