PMC3975723_01
Angiogram shows occlusions of the right (a) and left (b) internal carotid arteries in the proximal cervical segments. Infarction in the right middle cerebral artery-anterior cerebral artery watershed territory is seen on the DWI image (c). The T2 FLAIR image (d) shows the same area of infarction in the right middle cerebral artery-anterior cerebral artery watershed territory as well as regions of chronic infarction in the left middle cerebral artery territory.
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F1
MRI showed areas of acute infarction within the right middle cerebral artery-anterior cerebral artery watershed territory and chronic infarcts in the left middle cerebral artery-anterior cerebral artery watershed territory (fig. 1). Conventional angiography confirmed bilateral internal carotid artery occlusions in the proximal cervical segments, with reconstitution of the carotid arteries at the supraclinoid segments via the ethmoidal branches of the distal internal maxillary arteries and the ophthalmic arteries (fig. 1).