RT Journal Article SR Electronic T1 Erratum/Notice of Retraction JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1624 OP 1624 DO 10.3174/ajnr.A0816 VO 28 IS 8 YR 2007 UL http://www.ajnr.org/content/28/8/1624.1.abstract AB