Fig. 3From: Primary central nervous system post-transplant lymphoproliferative disorders: the spectrum of imaging appearances and differentialPrimary central nervous system post-transplant lymphoproliferative disorder. T1-weighted image with gadolinium (a) shows multiple ring enhancing masses (arrows) in the basal ganglia. T2-weighted image (b) shows extensive edema (arrows) and mild T2 isointense rims (small arrow). CBV map (c) demonstrates no increased perfusion. ADC map (d) shows restricted diffusion of the ring enhancing area (arrows) and elevated diffusion in the central areaBack to article page