title: [Dementia: role of imaging].
abstract: This article summarizes the role of imaging in the evaluation of cognitive disorders of the elderly. The primary goal of imaging is to exclude potentially  reversible dementia  due to intracranial lesions such as tumor, subdural hematoma or normal pressure hydrocephalus. The value of neuroimaging in the diagnosis of degenerative disorders is then discussed: Alzheimer's disease, frontotemporal dementias, dementia with Lewy bodies, dementia associated with parkinsonian syndromes, vascular dementias and mild cognitive impairment.
authors.affiliation: Département d'Imagerie Morphologique et Fonctionnelle, Hôpital Sainte-Anne, 1, rue Cabanis, 75674 Paris. meder@chsa.broca.inserm.fr
authors.forename: J F
authors.initials: JF
authors.lastname: Meder
authors.forename: M C
authors.initials: MC
authors.lastname: Henry-Feugeas
authors.forename: C
authors.initials: C
authors.lastname: Oppenheim
authors.forename: O
authors.initials: O
authors.lastname: Naggara
authors.forename: D
authors.initials: D
authors.lastname: Frédy
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000544:Alzheimer Disease / Q000175:diagnosis; D001921:Brain / Q000000981:diagnostic imaging / Q000473:pathology; D003704:Dementia / Q000134:cerebrospinal fluid / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000209:etiology / Q000473:pathology; D015140:Dementia, Vascular / Q000175:diagnosis; D003937:Diagnosis, Differential; D006801:Humans; D020961:Lewy Body Disease / Q000175:diagnosis; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D010300:Parkinson Disease / Q000175:diagnosis; D014057:Tomography, X-Ray Computed