Clinical Research Directory

Inclusion Criteria: * Patients aged between 18 and 65 years * Patient included in the Neurocog-Covid study (i.e. presenting a cognitive disorder that has been objectified on the neuropsychological assessment and having to undergo a cerebral MRI), * Patient who has received full information about the organization of the research and has given written informed consent (or a third person, independent of the investigator and sponsor, in the case of literacy disability), * Patient affiliated to or beneficiary of a social security plan Exclusion Criteria: * Women of childbearing age who do not have effective contraception. * Pregnant woman or nursing mother. * Persons referred to in Articles L. 1121-5, L. 1121-7 and L1121-8 of the Public Health Code. * Persons deprived of liberty by a judicial or administrative decision, persons undergoing psychiatric care pursuant to articles L. 3212-1 and L. 3213-1 * Contraindication to perform 18F-FDG PET-CT * Patients with a history of pre-Covid-19 psychiatric or chronic illness * Persons referred to in Articles L. 1121-5, L. 1121-7 and L1121-8 of the Public Health Code.