Figure 13. Pathologically proved Creutzfeldt-Jakob disease. Top: Transverse T2-weighted MR images (4,000/104; echo train length, eight; matrix, 256 x 192; field of view, 200 x 200 mm; section thickness, 5 mm with 1-mm gap; one signal acquired) demonstrate hyperintensity of the basal ganglia. Bottom: Transverse DW MR images (DWI; b = 1,000 sec/mm2; effective gradient, 14 mT/m; 6,000/108; matrix, 256 x 128; field of view, 400 x 200 mm; section thickness, 6 mm with 1-mm gap) show marked hyperintensity involving the basal ganglia bilaterally (arrowheads) and portions of the bilateral cortical ribbon (arrows).