RT Journal Article SR Electronic T1 Reply: JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP e83 OP e83 DO 10.3174/ajnr.A1146 VO 29 IS 9 A1 Zhong, C. YR 2008 UL http://www.ajnr.org/content/29/9/e83.abstract AB