PT - JOURNAL ARTICLE ED - American Society of Neuroradiology TI - Imaging Science AID - 10.3174/ajnr.A0759 DP - 2007 Nov 01 TA - American Journal of Neuroradiology 4099 - http://www.ajnr.org/content/early/2007/11/01/ajnr.A0759.short 4100 - http://www.ajnr.org/content/early/2007/11/01/ajnr.A0759.full