RT Journal Article SR Electronic T1 Erratum JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP E25 OP E25 DO 10.3174/ajnr.A1968 VO 31 IS 1 YR 2010 UL http://www.ajnr.org/content/31/1/E25.abstract AB