RT Journal Article SR Electronic T1 Reply: JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP e99 OP e99 DO 10.3174/ajnr.A1199 VO 29 IS 10 A1 S.K. Natarajan A1 L.N. Sekhar YR 2008 UL http://www.ajnr.org/content/29/10/e99.abstract AB