Brain imaging in the assessment for epilepsy surgery.

Area of Science:

• Neurology
• Radiology
• Medical Imaging

Background:

• Epilepsy surgery requires precise presurgical assessment.
• Structural brain imaging identifies most cerebral lesions causing focal epilepsy.
• Current imaging limitations necessitate advanced techniques for improved accuracy.

Purpose of the Study:

• To review the role and advancements in brain imaging for epilepsy presurgical assessment.
• To highlight how novel imaging techniques enhance lesion detection and functional mapping.
• To discuss the potential of multimodal imaging in guiding epilepsy surgery.

Main Methods:

• Review of structural MRI (including diffusion-weighted imaging) and functional MRI.
• Discussion of advanced techniques like PET, SPECT, and source imaging.
• Exploration of tractography and semi-automated registration for multimodal datasets.

Main Results:

• Advanced MRI techniques increase the accuracy of lesion detection.
• Functional MRI and tractography identify critical brain areas and white matter tracts.
• Multimodal imaging enables the creation of patient-specific datasets for surgical planning.

Conclusions:

• Brain imaging is crucial for presurgical epilepsy evaluation.
• Advances in imaging improve lesion detection, functional mapping, and surgical risk reduction.
• Multimodal imaging and semi-automated methods promise more precise, individualized epilepsy surgery.