RT Journal Article SR Electronic T1 Xenon- and Iodine-Enhanced CT of Diffuse Cerebral Circulatory Arrest JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 227 OP 232 VO 1 IS 3 A1 Burton P. Drayer A1 Manuel Dujovny A1 Sidney K. Wolfson A1 Ricardo Segal A1 David Gur A1 Manfred Boehnke A1 Gutti Rao A1 Eugene Cook YR 1980 UL http://www.ajnr.org/content/1/3/227.abstract AB The role of contrast-enhanced computed tomography (CT) was evaluated in three nonhuman primates with a severe cerebrovascular insult and resulting elevated intracranial pressure and diffuse circulatory arrest. In all three animals the brain vasculature did not opacify after the bolus intravenous injection of iodinated contrast media. In addition, the brain substance did not enhance although the arterial blood enhanced normally after inhalation of a high concentration of xenon. Xenon-enhanced CT scanning, like 133Xe radionuclide scanning, may be used to define the absence of generalized cerebral perfusion.