TY - JOUR T1 - Reply: JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. DO - 10.3174/ajnr.A1230 AU - P. Chapman AU - R. Gupta Y1 - 2008/08/07 UR - http://www.ajnr.org/content/early/2008/08/07/ajnr.A1230.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -