RT Journal Article SR Electronic T1 Reply: JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP E73 OP E73 DO 10.3174/ajnr.A2187 VO 31 IS 8 A1 N. Kumar YR 2010 UL http://www.ajnr.org/content/31/8/E73.abstract AB