Title
Curvature analysis of perisylvian epilepsy
Recommended Citation
Siadat MR, Elisevich K, Soltanian-Zadeh H, Eetemadi A, and Smith B. Curvature analysis of perisylvian epilepsy. Acta Neurol Belg 2023.
Document Type
Article
Publication Date
6-27-2023
Publication Title
Acta neurologica Belgica
Abstract
PURPOSE: We assess whether alterations in the convolutional anatomy of the deep perisylvian area (DPSA) might indicate focal epileptogenicity.
MATERIALS AND METHODS: The DPSA of each hemisphere was segmented on MRI and a 3D gray-white matter interface (GWMI) geometrical model was constructed. Comparative visual and quantitative assessment of the convolutional anatomy of both the left and right DPSA models was performed. Both the density of thorn-like contours (peak percentage) and coarse interface curvatures was computed using Gaussian curvature and shape index, respectively. The proposed method was applied to a total of 14 subjects; 7 patients with an epileptogenic DPSA and 7 non-epileptic subjects.
RESULTS: A high peak percentage correlated well with the epileptogenic DPSA. It distinguished between patients and non-epileptic subjects (P = 0.029) and identified laterality of the epileptic focus in all but one case. A diminished regional curvature also identified epileptogenicity (P = 0.016) and, moreover, its laterality (P = 0.001).
CONCLUSION: An increased peak percentage from a global view of the GWMI of the DPSA provides some indication of a propensity toward a focal or regional DPSA epileptogenicity. A diminished convolutional anatomy (i.e., smoothing effect) appears also to coincide with the epileptogenic site in the DPSA and to distinguish laterality.
PubMed ID
37368146
ePublication
ePub ahead of print
