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FIG 1. Case 1: 3-year-old girl with bifrontal polymicrogyria. Axial spin-echo (SE) (600/20) MR image shows shallow sulci with irregularity or the cortical–white matter junction, consistent with polymicrogyria, involving the entire frontal cortex posteriorly to the central sulcus.
FIG 2. Case 15: 10-month-old girl with bilateral holosylvian polymicrogyria.
A, Axial reformation from 3D Fourier transformation (3DFT) gradient-echo (GRE) (35/7) image shows thickened, irregular cortex involving the entirety of the cortex surrounding the sylvian fissures and widening of the fissures.
B, Sagittal reformation from 3DFT GRE (35/7) image shows that the entire perisylvian cortex (arrows) is abnormal.
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