Galldiks, N., Ullrich, R., Schroeter, M., Fink, G. R., & Kracht, L. W. (2010). Volumetry of [11C]-methionine PET uptake and MRI contrast enhancement in patients with recurrent glioblastoma multiforme. European Journal of Nuclear Medicine and Molecular Imaging, 37(1), 84-92. doi:10.1007/s00259-009-1219-5.