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Whole-brain voxel-based morphometry of white matter in medial temporal lobe epilepsy
Aihong Yu1, Kuncheng Li, Lin Li
1Department of Radiology, Xuanwu Hospital, Capital University of Medical Sciences, Beijing 100053, China.
Purpose:
The purpose of this study was to analyze whole-brain white matter changes in medial temporal lobe epilepsy (MTLE).
Materials And Methods:
We studied 23 patients with MTLE and 13 age- and sex-matched healthy control subjects using voxel-based morphometry (VBM) on T1-weighted 3D datasets. The seizure focus was right sided in 11 patients and left sided in 12. The data were collected on a 1.5 T MR system and analyzed by SPM 99 to generate white matter density maps.
Results:
Voxel-based morphometry revealed diffusively reduced white matter in MTLE prominently including bilateral frontal lobes, bilateral temporal lobes and corpus callosum. White matter reduction was also found in the bilateral cerebellar hemispheres in the left MTLE group.
Conclusion:
VBM is a simple and automated approach that is able to identify diffuse whole-brain white matter reduction in MTLE.
Insights
Medial temporal lobe epilepsy (MTLE) is associated with widespread white matter reduction throughout the brain. Voxel-based morphometry effectively detects these diffuse changes in patients with MTLE.
Area of Science:
- Neuroimaging
- Neurology
- Epilepsy Research
Background:
- Medial temporal lobe epilepsy (MTLE) is a common form of focal epilepsy.
- Understanding the neuroanatomical underpinnings of MTLE is crucial for diagnosis and treatment.
Purpose of the Study:
- To investigate whole-brain white matter integrity in patients with MTLE.
- To identify specific patterns of white matter alterations in MTLE using neuroimaging techniques.
Main Methods:
- Voxel-based morphometry (VBM) analysis was performed on T1-weighted 3D MRI datasets.
- 23 patients with MTLE and 13 healthy controls were included.
- Data were acquired using a 1.5 T MR system and analyzed with SPM 99.
Main Results:
- VBM revealed significant, diffuse white matter reduction in MTLE patients.
- Affected areas included bilateral frontal lobes, bilateral temporal lobes, and the corpus callosum.
- The left MTLE group showed additional white matter reduction in bilateral cerebellar hemispheres.
Conclusions:
- Voxel-based morphometry is a straightforward, automated method for detecting diffuse white matter reduction in MTLE.
- These findings highlight the widespread impact of MTLE on brain white matter.
