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Abstract

Experimental Xenon Enhancement with CT Imaging: Cerebral Applications

Burton P. Drayer, David Gur, Sidney K. Wolfson and Eugene E. Cook
American Journal of Neuroradiology January 1980, 1 (1) 3-8;
Burton P. Drayer
1Departments of Radiology and Neurology, University of Pittsburgh Health Center, Pittsburgh, PA 15213. Present address: Department of Radiology, Duke University Medical Center, P.O. Box 3808, Durham, NC 27710. Address reprint requests to B. P. Drayer
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David Gur
2Department of Radiology, University of Pittsburgh Health Center, Pittsburgh, PA 15213
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Sidney K. Wolfson Jr
3Department of Neurosurgery, University of Pittsburgh Health Center, Pittsburgh, PA 15213
4Division of Surgical Research, Montefiore Hospital of Pittsburgh, Pittsburgh, PA 15213
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Eugene E. Cook
4Division of Surgical Research, Montefiore Hospital of Pittsburgh, Pittsburgh, PA 15213
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Abstract

Xenon-enhanced cranial computed tomography (CT) was used to derive the partition coefficient (λ) and flow rate constant (K) and thus provide a functional neuroanatomic map of local cerebral blood flow in eight nonhuman primates. Sequential CT imaging defined the temporal changes of xenon concentration in arterial blood and brain tissue both during and after xenon inhalation. Several methodologies including clearance, buildup, and in vivo “autoradiography” were used to estimate flow in various brain locales. A typical derived fast flow rate using xenon CT methodology was 85 ml/100 g/min, with a range of 58–108. The in vivo autoradiographic method of defining flow seems more clinically applicable in man. The limitations and potential solutions using CT blood flow techniques are discussed.

  • © American Roentgen Ray Society
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American Journal of Neuroradiology
Vol. 1, Issue 1
1 Jan 1980
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Experimental Xenon Enhancement with CT Imaging: Cerebral Applications
Burton P. Drayer, David Gur, Sidney K. Wolfson, Eugene E. Cook
American Journal of Neuroradiology Jan 1980, 1 (1) 3-8;

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Experimental Xenon Enhancement with CT Imaging: Cerebral Applications
Burton P. Drayer, David Gur, Sidney K. Wolfson, Eugene E. Cook
American Journal of Neuroradiology Jan 1980, 1 (1) 3-8;
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