RT Journal Article SR Electronic T1 Valproic acid-induced hyperammonemic encephalopathy: MR appearance. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1779 OP 1781 VO 15 IS 9 A1 M D Baganz A1 P E Dross YR 1994 UL http://www.ajnr.org/content/15/9/1779.abstract AB