Published ahead of print on February 22, 2008
doi: 10.3174/ajnr.A0945
Sixty-Four-Section CT Cerebral Perfusion Evaluation in Patients with Carotid Artery Stenosis before and after Stenting with a Cerebral Protection Device
F. Gaudielloa,
V. Colangeloa,
F. Bolacchia,
M. Melisa,
R. Gandinia,
F.G. Garacia,
V. Cozzolinoa,
R. Florisa and
G. Simonettia
a From the Department of Diagnostic Imaging and Interventional Radiology, University of Tor Vergata, Rome, Italy

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Fig 1. A, An example of ICA flow territory (red) in a population with a nonvariant type of circle of Willis. B and C, CBF (mL/100 g per minute) and MTT (seconds) perfusion maps of 1 patient with a nonvariant type of circle of Willis, showing the regions of interest placed on the territory of distribution of the ICA. No CBF and MTT changes are appreciable on visual inspection.
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Fig 2. A and B, Differences between mean MTT (seconds) (A) and mean CBF (mL/100 g per minute) (B) values measured 5 days before (pre) and 1 week after (post) the stent-placement procedure. The patent artery refers to the contralateral normal hemisphere. Asterisk indicates P < .001.
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