RT Journal Article SR Electronic T1 Erratum JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP e12 OP e12 DO 10.3174/ajnr.A1056 VO 29 IS 3 YR 2008 UL http://www.ajnr.org/content/29/3/e12.abstract AB