Model of Reversible Cerebral Ischemia in a Monkey Model
Charles A. Jungreisa,b,
Edwin Nemotob,
Fernando Boadaa and
Michael B. Horowitza,b
a Department of Radiology, University of Pittsburgh Medical Center, PA
b Department of Neurological Surgery, University of Pittsburgh Medical Center, PA

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FIG 1. PA angiograms.
A, View of a left vertebral artery. Both posterior cerebral arteries are opacified, and via the posterior communicating arteries, so are the bilateral anterior and middle cerebral arteries. Arrow indicates the right posterior cerebral artery.
B, View of the microcatheter (arrows) in the right posterior cerebral artery obtained during coil deposition.
C, View of the left vertebral artery after coil embolization of the right posterior cerebral artery.
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FIG 2. Angiograms.
A, PA view of the right internal carotid artery. Coils in the right posterior cerebral artery are from prior embolization.
B, PA view. Coils (small arrow) are in the right posterior cerebral artery, and an endovascular balloon (large arrows) is occluding the distal right internal carotid and proximal right middle cerebral arteries.
C, Lateral view. Coils are in the right posterior cerebral artery and an endovascular balloon (arrow) is occluding the distal right internal carotid and proximal right middle cerebral arteries.
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FIG 3. MR angiograms.
A, Image obtained during balloon occlusion of the right middle cerebral artery. The right posterior cerebral artery was occluded with coils. No flow is apparent in the right middle or posterior cerebral arteries.
B, Image obtained after deflation and removal of the balloon. Flow (arrow) has returned in the right middle cerebral artery.
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