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Figure 4b. Sporadic Creutzfeldt-Jakob disease in a 62-year-old woman 3 weeks after the onset of progressive dementia and 6 weeks before the appearance of periodic synchronous discharges on the EEG. (a, b) Axial diffusion-weighted images at two different levels show areas of abnormal high signal intensity in the cerebral cortex on both sides. Subtle high-signal-intensity areas in the caudate nucleus and the anterior portion of the putamen also are visible. (c) Axial ADC map from diffusion-weighted imaging shows the cortical lesions as areas of decreased signal intensity, with the most striking decreases visible in the caudate nucleus and putamen.
