Voxel-based morphometric magnetic resonance imaging postprocessing in non-lesional pediatric epilepsy patients using
W Wang1,2, Y Lin1,2, S Wang2,3
1Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China.
European Journal of Neurology
|January 28, 2019
Summary
Voxel-based MRI postprocessing helps detect subtle focal cortical dysplasia in children with epilepsy and normal MRI scans. This technique improves seizure control when these subtle abnormalities are surgically resected.
Area of Science:
- Neuroimaging
- Pediatric Neurology
- Epilepsy Surgery
Background:
- Pre-surgical evaluation for pediatric drug-resistant focal epilepsy with normal MRI is challenging.
- Subtle focal cortical dysplasia (FCD) may be missed on standard MRI analysis.
Purpose of the Study:
- To evaluate voxel-based MRI postprocessing for detecting subtle FCD in pediatric surgical candidates.
- To improve diagnostic accuracy in non-lesional epilepsy cases.
Main Methods:
- Included pediatric patients with visually negative MRI during pre-surgical evaluation.
- Utilized a voxel-based morphometric analysis program (MAP) comparing patient MRI to a pediatric database.
- Correlated MAP findings with surgical outcomes and pathology.
Main Results:
- 44% of patients with visually normal MRI showed positive MAP regions.
- Complete resection of MAP-positive regions correlated with seizure-free outcomes (P < 0.001).
- MAP-positive rates varied by age group, with higher detection in younger children.
Conclusions:
- Voxel-based MRI postprocessing (MAP) enhances detection of subtle FCD in pediatric epilepsy.
- This advanced MRI analysis is crucial for pre-surgical evaluation when standard MRI is inconclusive.
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