PMC7336214_01
(a) Axial fluid-attenuated inversion recovery (FLAIR) and diffusion-weighted magnetic resonance imaging (DWI) upon symptom presentation showed diffuse symmetric deep white matter involvement of the centrum semiovale posterior frontal and parietal, with T2/FLAIR hyperintensity and restricted diffusion (first row of images), which extend continuously to the splenium of the corpus callosum (second row of images). (b) Follow-up MRI 1 month after presentation showed significant symmetric improvement of the findings on FLAIR and DWI images. The FLAIR abnormalities had improved both in volume and intensity; subtle increased signal could still be traced on DWI images, with no actual restricted diffusion on ADC map images.
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fig1
T2, FLAIR, and DWI images (Figure 1). The FLAIR abnormalities were hardly recognized on the second MRI and had improved both in volume of involvement and intensity.