Gyriform restricted diffusion in adults: looking beyond thrombo-occlusions

摘要

MRI of the brain performed in the acute phase of HIE. On axial DWI ( , ) and axial ADC images ( , ), symmetric GRD is seen in the perirolandic cortices (arrows in and ) and in the visual cortices bilaterally (arrows in and ). Restricted diffusion is also observed in the putamina (dashed arrows in and ) and in the thalami (arrowheads in and ). Corresponding axial T2W images ( , ) demonstrate no obvious signal abnormality in the cortices. However, there is mild T2 hyperintensity in the putamina (dashed arrows) and in the thalami (arrowheads) ( )