RT Journal Article SR Electronic T1 Reply: JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP e46 OP e47 DO 10.3174/ajnr.A1047 VO 29 IS 6 A1 David F. Kallmes A1 Kennith F. Layton A1 William F. Marx A1 Frank Tong YR 2008 UL http://www.ajnr.org/content/29/6/e46.abstract AB