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Images obtained in a 49-year-old woman with SAH. A, 3D volume-rendered CTA image in lateral view shows a 1.5-mm ruptured aneurysm (arrow) at the junction between the A2 segment of the right anterior cerebral artery and a second anterior communicating artery that is fenestrated (line). B, Lateral projection from presurgical treatment 3D DSA shows the same aneurysm as in A.
