Extensive Cortical Diffusion Restriction in a 50-Year-Old Female with Hyperammonemic Encephalopathy and Status Epilepticus
Figure 2
MRI of the brain four days after Figure 1. ((a), (b), and (c)) DTI images with hyperintense cortical diffusion restriction, now also involving ((b), dotted arrows) the thalami and basal ganglia, and ((b) and (c), solid arrows) the occipital cortices; ((d), (e), and (f)) axial apparent diffusion coefficient (ADC) images with hyperintensity of the previously hypointense cortical areas, confirming the transition from cytotoxic edema to extracellular edema, consistent with cerebral edema seen on CT. However, the areas of new diffusion restriction seen on the DTI have a hypointense ADC correlate ((e) and (f), corresponding solid and dotted arrows), suggesting they are due to a more recent event.
