MRI image, epilepsy syndromes research

Dear expert.

I’m looking for a set of MRI images of people having epilepsy syndromes: Dravet syndrom, Lennox-Gastaut (or other type of seizures).
I’ve looked at OpenNeuro database and didn’t find anything matching our requirements.

Does anyone know any other source of MRI images where it worth checking?
Do you think it possible to buy/get required anonymized images, e.g. from a clinic?