RT Journal Article SR Electronic T1 Is high signal intensity in the corticospinal tract a sign of degeneration? JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 801 OP 802 VO 17 IS 4 A1 A Guermazi YR 1996 UL http://www.ajnr.org/content/17/4/801.abstract