PT - JOURNAL ARTICLE AU - Dai, D. AU - Kallmes, D.F. TI - <em>Reply:</em> AID - 10.3174/ajnr.A2019 DP - 2010 Mar 01 TA - American Journal of Neuroradiology PG - E37--E37 VI - 31 IP - 3 4099 - http://www.ajnr.org/content/31/3/E37.short 4100 - http://www.ajnr.org/content/31/3/E37.full SO - Am. J. Neuroradiol.2010 Mar 01; 31