PT - JOURNAL ARTICLE AU - E.L. Gasparetto AU - F. Nirenberg AU - J. Marcondes de Souza TI - Reply: AID - 10.3174/ajnr.A1584 DP - 2009 Apr 02 TA - American Journal of Neuroradiology 4099 - http://www.ajnr.org/content/early/2009/04/02/ajnr.A1584.short 4100 - http://www.ajnr.org/content/early/2009/04/02/ajnr.A1584.full