PT - JOURNAL ARTICLE AU - I. Crassard AU - H. Chabriat TI - Reply: AID - 10.3174/ajnr.A1848 DP - 2009 Oct 08 TA - American Journal of Neuroradiology 4099 - http://www.ajnr.org/content/early/2009/10/08/ajnr.A1848.short 4100 - http://www.ajnr.org/content/early/2009/10/08/ajnr.A1848.full