ONYX Evaluation in the Endovascular Treatment of Intracranial Dural Arteriovenous Fistulae

Inclusion Criteria: * The patient has an intracranial dAVF which could be treated by ONYX embolization, whether or not associated to other embolization products. * The patient is at least 18 years of age. Exclusion Criteria: * The patient needs to be treated for the dAVF with another treatment option (for example by surgery) than embolization within a period of less than 6 months (to be counted as from the first treatment) * The patient participates to another clinical study during the treatment period for his/her dAVF, evaluating another medical devices, procedure or medication. * The patient refuses to give consent to the collection and processing of data required for centralized monitoring. * A condition which could jeopardize follow-up of the patient.