RT Journal Article SR Electronic T1 Erratum JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP e115 OP e115 DO 10.3174/ajnr.A1795 VO 30 IS 7 YR 2009 UL http://www.ajnr.org/content/30/7/e115.abstract AB