EPILEPSY UNIT HOSPITAL DEL MAR

Stereoelectroencephalography (SEEG)

The SEEG is an invasive diagnostic technique developed in France in the 1960s by Bancaud and Talairach in the Sainte-Anne hospital. It involves the implantation of multiple microelectrodes using stereotactic technique. Designing a correct implantation scheme requires many years of practice and experience. Its goal is the evaluation of an anatomo-electro-clinical correlate in the generation and propagation of seizures. Therefore, the analysis of these records allows us to know the spatio-temporal dynamics of epileptic seizures related to semiology with a high degree of anatomical precision.

SEEG Indications

  • Polymicrogyria (PMG)

  • Tuberous Sclerosis (TSC)

  • Focal Cortical Dysplasia (CFD)

  • Periventricular Heterotopias (HPV)

  • RNM negative (not lesional)


Implementation planning using 3DSlicer and multimodal analysis PET-RM.


SEEG Postprocessing for accurate electrode location using Freesurfer and MNI atlases.


Example of SEEG in non-lesional temporal epilepsy.


Example of bilateral SEEG in insular epilepsy.



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