PT - JOURNAL ARTICLE AU - M. Castillo TI - Apples AID - 10.3174/ajnr.A3162 DP - 2012 May 17 TA - American Journal of Neuroradiology 4099 - http://www.ajnr.org/content/early/2012/05/31/ajnr.A3162.short 4100 - http://www.ajnr.org/content/early/2012/05/31/ajnr.A3162.full