RT Journal Article SR Electronic T1 Carotid Artery Balloon Test Occlusion JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP S8 OP S9 VO 22 IS 8 suppl YR 2001 UL http://www.ajnr.org/content/22/8_suppl/S8.abstract AB