TY - JOUR T1 - <em>Reply:</em> JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - E31 LP - E31 DO - 10.3174/ajnr.A1998 VL - 31 IS - 2 AU - E.M. Genden Y1 - 2010/02/01 UR - http://www.ajnr.org/content/31/2/E31.abstract N2 - ER -