RT Journal Article SR Electronic T1 Ischemia and Multiple Sclerosis: Perfusion MR Imaging Provides Insight into an Underexplored Pathophysiology JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1306 OP 1308 VO 26 IS 6 A1 Jack Simon YR 2005 UL http://www.ajnr.org/content/26/6/1306.abstract AB