TY - JOUR T1 - <em>Reply</em>: JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - E67 LP - E67 DO - 10.3174/ajnr.A3109 VL - 33 IS - 4 AU - J.K. Hoang AU - A.R. Gafton Y1 - 2012/04/01 UR - http://www.ajnr.org/content/33/4/E67.abstract N2 - ER -