Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2018 Jan 30;5(3):357–368. doi: 10.1002/acn3.536

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2018 The Authors. Annals of Clinical and Translational Neurology published by Wiley Periodicals, Inc on behalf of American Neurological Association.

This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

PMC Copyright notice

Representative cases. A 60‐year‐old male patient with initial NIH Stroke‐Scale (NIHSS) score of 18. In axial gradient‐echo images (GRE) of initial MRI, a clot in the proximal basilar segment is observed (panel A). Angiography reveals a basilar artery (BA) occlusion at the vertebra‐basilar junction level (panel B, upper). Immediate follow‐up angiography after achieving a successful reperfusion by endovascular treatment revealed a tight residual stenosis in the proximal BA, suggesting an in situ atherosclerotic stenosis mechanism (panel B, lower). In GRE images of an 85‐year‐old female patient with initial NIHSS score of 21, clot sign was detected in the distal basilar segment (panel C). BA was occluded at the middle segment (panel D, upper), and no residual stenosis was observed after a complete reperfusion, suggesting an embolic mechanism (panel D, lower).