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AJNR - American Journal of Neuroradiology

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Hemodynamic Changes of the Cerebral Circulation after Stent-Protected Carotid Angioplasty

Wolf-Dirk Niesen^a, Michael Rosenkranz^a, Bernd Eckert^b, Melanie Meissner^a, Cornelius Weiller^a and Ulrich Sliwka^a

^a Departments of Neurology, University Hospital Eppendorf, Hamburg, Germany
^b Departments of Neuroradiology, University Hospital Eppendorf, Hamburg, Germany

View larger version (28K): [in a new window]   FIG 1. CBVF before (CBVF pre) and after (CBVF post) interventional obliteration of the ICA. Star indicates P < .05.

View larger version (28K): [in a new window]   FIG 2. Volume flow in the ipsilateral ICA before (iICA pre) and after (iICA post) SPAC. Stars indicate P < .01.

View larger version (28K): [in a new window]   FIG 3. Volume flow of the contralateral carotid artery in patients with anterior cross-filling before (cICA pre) and after (cICA post) SPAC and volume flow of the vertebral arteries in patients with posterior collateral flow before (tAV pre) and after (tAV post) the procedure. Stars indicate P < .01.

View larger version (28K): [in a new window]   FIG 4. rMCA before (rMCA pre) and after (rMCA post) the interventional procedure. Patients with a hemodynamically relevant contralateral ICA lesion were not included in this analysis. Stars indicate P < .01. Data presented in Figures 1–4 were obtained by extracranial color-coded duplex sonography.