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FIG 3. Viral meningoencephalitis.
A–D, T2-weighted (A), T1-weighted (B), MT-SE T1-weighted (C), and postcontrast MT-SE T1-weighted (D) images. In A, an image through the region of the pons shows a poorly defined T2 hyperintense parenchymal lesion in the dorsal aspect of the pons. In D, there is meningeal enhancement (arrow) in the basal cisterns. In A and B, there is no suggestion of meningeal thickening/involvement. ROIs placed for calculation of the MT ratio at same positions in B, C, and D are shown as black dots (arrowheads).
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