PT - JOURNAL ARTICLE AU - Barajas, R.F. AU - Chang, J.S. AU - Sneed, P.K. AU - Segal, M.R. AU - McDermott, M.W. AU - Cha, S. TI - Distinguishing Recurrent Intra-Axial Metastatic Tumor from Radiation Necrosis Following Gamma Knife Radiosurgery Using Dynamic Susceptibility-Weighted Contrast-Enhanced Perfusion MR Imaging AID - 10.3174/ajnr.A1362 DP - 2008 Nov 20 TA - American Journal of Neuroradiology 4099 - http://www.ajnr.org/content/early/2008/11/20/ajnr.A1362.short 4100 - http://www.ajnr.org/content/early/2008/11/20/ajnr.A1362.full