Angiograms demonstrating stages of Onyx embolization of a 53-year-old man presenting with severe headaches and found to have mm left anterior choroidal aneurysm with 5 mm neck as seen in the A/P (a) and 3D reconstruction (b). (c) DSA showing magnified frontal and lateral. (d) Projection after Onyx embolization and placement of Enterprise stent.
