Exploratory Study of Cerebral Perfusion and Metabolic Alterations and Neurocognitive Disorders in Patients With Unruptured Arteriovenous Malformations Before and After Surgical Treatment

Inclusion Criteria: * Adults aged 18 and older * Admitted for an unruptured arteriovenous malformation with a decision to proceed with surgery Exclusion Criteria: * Patients who refuse surgical treatment for arteriovenous malformation * Contraindications to 18F-FDG PET (uncontrolled diabete) * Patients' inability to lie still for 40 minutes * Patients with a confirmed diagnosis of neurodegenerative or psychiatric disorders * Pregnant or breastfeeding women (Article L.1121-5 of the French Public Health Code) * Persons deprived of their liberty by judicial or administrative decision (Article L.1121-6 of the French Public Health Code) * Persons who are subject to legal protection measures or who are unable to express their consent (guardianship, curatorship, judicial protection; Article L.1121-8 of the French Public Health Code) * Not affiliated with a social security scheme or beneficiary of such a scheme (Article L.1121-8-1 of the French Public Health Code) * Persons participating in another study that includes an ongoing exclusion period (Article L.1121-12 of the French Public Health Code) * Failure to obtain written informed consent