AJDRAJNR - American Journal of Neuroradiology

This Article
Right arrow Abstract Freely available
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Gahn,
Right arrow Articles by von Kummer,
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Gahn,
Right arrow Articles by von Kummer,

Cerebrovascular Reserve Before and After Vertebral Artery Angioplasty

Georg GahnGo,a, Antje Richtera, Holger Bourquaina, Susanne Hallmeyera, Heinz Reichmanna and Rüdiger von Kummera

a From the Departments of Neurology (G.G., A.R., S.H., H.R.) and Neuroradiology (H.B., R.vK.), Technical University of Dresden, Dresden, Germany.



View larger version (107K):

[in a new window]
  		FIG 1. Digital subtraction angiography of the vertebrobasilar system.

A, Before angioplasty, there is a 95% stenosis of the distal segment at the level of the foramen magnum.

B, After angioplasty, there is a residual 50% stenosis.



View larger version (34K):

[in a new window]
  		FIG 2. Cerebrovascular reserve, defined as percentage of change in mean blood flow velocity in the PCA over time of breath-holding.

A, Before angioplasty, there is marked impairment of cerebrovascular reserve on the left side as compared with the right.

B, After angioplasty, cerebrovascular reserve is equal on both sides.





Copyright © 2008 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X