RT Journal Article SR Electronic T1 The Need for Objective Assessment of the New Imaging Techniques and Understanding the Expanding Roles of Stroke Imaging JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1779 OP 1784 VO 20 IS 10 A1 William T. C. Yuh A1 Toshihiro Ueda A1 Matthew White A1 Michael E. Schuster A1 Toshiaki Taoka YR 1999 UL http://www.ajnr.org/content/20/10/1779.abstract AB