RT Journal Article SR Electronic T1 Reply: JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP E132 OP E132 DO 10.3174/ajnr.A3413 VO 33 IS 10 A1 Li, Y.X. YR 2012 UL http://www.ajnr.org/content/33/10/E132.abstract AB