RT Journal Article SR Electronic T1 Distinguishing Recurrent Intra-Axial Metastatic Tumor from Radiation Necrosis Following Gamma Knife Radiosurgery Using Dynamic Susceptibility-Weighted Contrast-Enhanced Perfusion MR Imaging JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology DO 10.3174/ajnr.A1362 A1 Barajas, R.F. A1 Chang, J.S. A1 Sneed, P.K. A1 Segal, M.R. A1 McDermott, M.W. A1 Cha, S. YR 2008 UL http://www.ajnr.org/content/early/2008/11/20/ajnr.A1362.abstract AB