Published ahead of print on January 6, 2010 doi: 10.3174/ajnr.A2012 American Journal of Neuroradiology 31:E35-E36, March 2010 © 2010 American Society of Neuroradiology H. Menga, S.K. Natarajana, L. Gaoa, C. Ionitaa, J. Kolegaa and A.H. Siddiquia aToshiba Stroke Research Center State University of New York at