PT - JOURNAL ARTICLE AU - M.C. Bianchi TI - Reply AID - 10.3174/ajnr.A0805 DP - 2007 Nov 16 TA - American Journal of Neuroradiology 4099 - http://www.ajnr.org/content/early/2007/11/20/ajnr.A0805.short 4100 - http://www.ajnr.org/content/early/2007/11/20/ajnr.A0805.full