RT Journal Article SR Electronic T1 Erratum JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP e68 OP e68 DO 10.3174/ajnr.A3116 VO 33 IS 4 YR 2012 UL http://www.ajnr.org/content/33/4/e68.abstract AB