RT Journal Article SR Electronic T1 False-positive spinal MR findings for subarachnoid spread of primary CNS tumor in postoperative pediatric patients. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1100 OP 1103 VO 11 IS 6 A1 M D Wiener A1 O B Boyko A1 H S Friedman A1 B Hockenberger A1 W J Oakes YR 1990 UL http://www.ajnr.org/content/11/6/1100.abstract AB