RT Journal Article SR Electronic T1 Value and Limitations of Diffusion-Weighted Imaging in Grading and Diagnosis of Pediatric Posterior Fossa Tumors JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology DO 10.3174/ajnr.A2155 A1 Jaremko, J.L. A1 Jans, L.B.O. A1 Coleman, L.T. A1 Ditchfield, M.R. YR 2010 UL http://www.ajnr.org/content/early/2010/06/10/ajnr.A2155.abstract AB