RT Journal Article SR Electronic T1 The Roles of Diffusion and Perfusion MR Imaging in Acute Stroke Management JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 957 OP 959 VO 20 IS 6 A1 Latchaw, Richard E. YR 1999 UL http://www.ajnr.org/content/20/6/957.abstract AB