PT - JOURNAL ARTICLE AU - Hom, J. AU - Wintermark, M. TI - Reply: AID - 10.3174/ajnr.A2629 DP - 2011 Apr 20 TA - American Journal of Neuroradiology 4099 - http://www.ajnr.org/content/early/2011/04/21/ajnr.A2629.short 4100 - http://www.ajnr.org/content/early/2011/04/21/ajnr.A2629.full