Fig 2.

A 50-year-old man with a paraclinoid internal carotid artery aneurysm. A, Cerebral angiography performed immediately after stent-assisted coiling shows the normal parent artery. B, Time-of-flight MR angiography obtained at a 1-year follow-up examination shows signal drop-out with a decreased diameter and signal intensity of distal vessels in the left middle cerebral artery. C, Oblique reformatted images of vessel wall MR imaging reveal stenosis in the left proximal middle cerebral artery (arrow). D, Follow-up cerebral angiography confirms stenosis of the left proximal middle cerebral artery.