PT - JOURNAL ARTICLE AU - Mauricio Castillo AU - Harry J. Cloft TI - Reply AID - 10.3174/ajnr.A0760 DP - 2007 Oct 18 TA - American Journal of Neuroradiology 4099 - http://www.ajnr.org/content/early/2007/11/27/ajnr.A0760.short 4100 - http://www.ajnr.org/content/early/2007/11/27/ajnr.A0760.full