RT Journal Article SR Electronic T1 Corticospinal Tract Abnormalities Are Associated with Weakness in Multiple Sclerosis JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology DO 10.3174/ajnr.A0788 A1 D.S. Reich A1 K.M. Zackowski A1 E.M. Gordon-Lipkin A1 S.A. Smith A1 B.A. Chodkowski A1 G.R. Cutter A1 P.A. Calabresi YR 2007 UL http://www.ajnr.org/content/early/2007/11/01/ajnr.A0788.abstract AB