RT Journal Article SR Electronic T1 Reply: JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP E130 OP E130 DO 10.3174/ajnr.A3364 VO 33 IS 10 A1 Khosla, A. A1 Brinjikji, W. A1 Cloft, H. A1 Lanzino, G. A1 Kallmes, D.F. YR 2012 UL http://www.ajnr.org/content/33/10/E130.abstract AB