PT - JOURNAL ARTICLE AU - O. Naggara AU - J.-F. Meder AU - C. Oppenheim TI - Reply: AID - 10.3174/ajnr.A2512 DP - 2011 Apr 06 TA - American Journal of Neuroradiology 4099 - http://www.ajnr.org/content/early/2011/04/07/ajnr.A2512.short 4100 - http://www.ajnr.org/content/early/2011/04/07/ajnr.A2512.full