mri of a 46 year old with iatrogenic cjd basal ganglia and thalamic hyperintensity is seen on t 2 - weighted images  a , dwi at b = 1000 s / mm 2  b  and  c  dwi at b = 3000 s / mm 2. cortical hyperintensity in the paracentral lobule bilaterally and right precentral gyrus is not visualized on t 2 - weighted images  d  but is seen on dwi b = 1000 s / mm 2  e  and  f  is more conspicuous at dwi at b = 3000 s / mm 2 