Intracranial Vertebrobasilar Artery Dissection Associated with Postpartum Angiopathy
Figure 3
Left vertebral artery injection demonstrates poor opacification of the basilar artery and posterior cerebral arteries (PCAs) despite an adequate contrast bolus. There is marked enlargement of the distal vertebral artery in the vicinity of the vertebrobasilar junction, extending into the basilar artery and the P1 segments of both PCAs. A linear filling defect is noted originating in, and spiraling around the basilar artery and extending into the proximal bilateral PCAs, consistent with a dissection (arrow B). There are also multiple segments of vascular dilatation and narrowing in the bilateral superior cerebellar arteries and distal PCAs consistent with postpartum angiopathy.
