Hippocampal Shape Analysis in Status Epilepticus Associated with Acute Encephalitis
Kitti Kaiboriboona and
R. Edward Hogana
a From the Department of Neurology, Saint Louis University, 3635 Vista Ave at Grand Blvd, MO
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FIG 1. Sagittal fluid-attenuated inversion recovery (10,002/165/2200/1 [TR/TEeff/TI/NEX]; matrix, 256 x 192) images obtained during an episode of status epilepticus show marked abnormal hyperintense signal in the bilateral hippocampi, without involvement of surrounding structures.
A, Right hippocampus.
B, Left hippocampus.
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FIG 2. Three-dimensional deformation-based surface-rendered images of the hippocampi obtained 9 months after the onset of the acute illness demonstrate severe global hippocampal atrophy. Accentuated volume loss of the medial projection of the hippocampal head (arrow), the uncinate gyrus, is shown.
A, View from the right side. The near image is the right hippocampus, and the far image is the left hippocampus.
B, View from the left side. The near image is the left hippocampus, and the far image is the right hippocampus.
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FIG 3. MR imaging deformation-based hippocampal shape analysis demonstrates the maximum accentuated inward deformation in the medial and lateral aspects of the hippocampal head, which are purple and blue. The magnitudes (in millimeters) and the direction of surface displacement are indicated by using a color-flame scale.
Left, View from the right side. The near image is the right hippocampus, and the far image is the left hippocampus.
Right, View from the left side. The near image is the left hippocampus, and the far image is the right hippocampus.
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AJNR - American Journal of Neuroradiology