DSA (angiography) - Angio before/after embo.
The first 3 images show an anterior communicating artery aneurysm, best shown on the third image. In addition, the first and third images show narrowing of both anterior cerebral arteries, best seen on the left, involving the A2 segments (portion of the anterior cerebral artery that originates at the anterior communicating artery extending superiorly to the genu of the corpus callosum). The next 3 images show successful aneurysm coiling.