FIG 1. 56-year-old woman with SAH.

A, Preoperative MIP image from a CTA study shows an anterior communicating artery aneurysm (arrow).

B, Postoperative CTA shows clipping of the aneurysm and narrowing of the anterior cerebral artery (arrows), consistent with vasospasm.

C, DSA, anteroposterior view, confirms vasospasm involving the A1 segment of the anterior cerebral artery (arrows).