mri of a 4 6 year old with iatrogenic cjd basal ganglia and thalamic hyperintensity is seen on t 2 - weighted images ( a ), dwi at b = 1 0 0 0 s / mm 2 ( b ) and ( c ) dwi at b = 3 0 0 0 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 = 1 0 0 0 s / mm 2 ( e ) and ( f ) is more conspicuous at dwi at b = 3 0 0 0 s / mm 2