RT Journal Article SR Electronic T1 Preoperative Grading of Presumptive Low-Grade Astrocytomas on MR Imaging: Diagnostic Value of Minimum Apparent Diffusion Coefficient JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology DO 10.3174/ajnr.A1254 A1 Lee, E.J. A1 Lee, S.K. A1 Agid, R. A1 Bae, J.M. A1 Keller, A. A1 terBrugge, K. YR 2008 UL http://www.ajnr.org/content/early/2008/08/21/ajnr.A1254.abstract AB