PT - JOURNAL ARTICLE ED - , TI - Brain Hypoxia and Ischemia AID - 10.3174/ajnr.A1572 DP - 2009 Apr 02 TA - American Journal of Neuroradiology 4099 - http://www.ajnr.org/content/early/2009/04/02/ajnr.A1572.short 4100 - http://www.ajnr.org/content/early/2009/04/02/ajnr.A1572.full