title: [Normal results].
abstract: THE TECHNIQUE: Today, magnetic resonance imaging (MRI) is the exploration of choice for a number of central nervous system disorders. This technique, which does not use ionising rays, examines the encephalus in all its dimensions. Various sequences are used to study the cerebral parenchyma: specific sequences in T1, with or without injection of a contrast product, specific sequence in T2, and FLAIR sequence. THE RESULTS OBTAINED: The diffusion and perfusion imaging respectively reveal the movement of the water molecules and the cerebral microcirculation. Visualisation of the arteries and veins is non-invasive with magnetic resonance angiographical techniques. Study of the chemical composition of tissues (magnetic resonance spectroscopy) and of cerebral activation (functional activation imaging) will not be addressed.
authors.affiliation: Département d'Imagerie Morphologique et Fonctionnelle, Centre Hospitalier Sainte-Anne, 1 rue Cabanis, Paris. meder@chsa.broca.inserm.fr
authors.forename: J F
authors.initials: JF
authors.lastname: Meder
authors.forename: F
authors.initials: F
authors.lastname: Brami-Zylberberg
authors.forename: C
authors.initials: C
authors.lastname: Oppenheim
authors.forename: E
authors.initials: E
authors.lastname: Méary
authors.forename: F
authors.initials: F
authors.lastname: Martinez-Lozano
authors.forename: D
authors.initials: D
authors.lastname: Delvat
authors.forename: D
authors.initials: D
authors.lastname: Frédy
mesh_terms: D001158:Arteries / Q000473:pathology; D001921:Brain / Q000098:blood supply / Q000473:pathology*; D006801:Humans; D007089:Image Enhancement; D018810:Magnetic Resonance Angiography; D008279:Magnetic Resonance Imaging; D008833:Microcirculation / Q000473:pathology; D012016:Reference Values; D014680:Veins / Q000473:pathology