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Dynamic CT Perfusion Imaging in Subarachnoid Hemorrhage–Related Vasospasm

A.M. Lasloa,b,c, J.D. Eastwoodd, F.-X. Chena,b,c and T.-Y. Leea,b,c

a Department of Medical Biophysics, University of Western Ontario, Durham, NC
b Imaging Research Laboratories, Robarts Research Institute, Durham, NC, London, Ontario, Canada
c Imaging Division, Lawson Health Research Institute, Durham, NC, London, Ontario, Canada
d Department of Radiology, Duke University Medical Center, Durham, NC


Figure 1
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  		Fig 1. Subtracted CT angiographic image of a contrast enhanced section through the middle segment of the basilar artery (white arrow).


Figure 2
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  		Fig 2. Top row, Images from a coronally oriented cine CT scan of the rabbit brain from the level of the pons (section 1) to the parieto-occipital cerebrum (section 4). Bottom row, CTP CBF maps corresponding to the CT images. Regions of interest (white) outline the regions in which CBF is quantified in ml/100 g/min. A, brain stem; B, cerebellum; C, deep gray matter; D, parieto-occipital cerebrum.


Figure 3
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  		Fig 3. Basilar artery diameter measured with CTA in the delayed stage of SAH. Error bars represent ± 1 SD. Asterisk indicates significant difference between basilar artery diameter in the control and nimodipine group (P < .05).


Figure 4
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  		Fig 4. Average CTP measurements of CBF (mL/100 g/min) after SAH in the control and treated group. Error bars represent ± 1 SD. Asterisk indicates significant difference between treated and control group (P < .05).





Copyright © 2009 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X