title: Imaging of the pre-chiasmatic optic nerve.
abstract: Damage to the optic nerve (ON) is characterised by a reduction in visual acuity. Pre-chiasmatic lesions to the optic nerve may be of traumatic, congenital, tumoral (meningioma, glioma), inflammatory or vascular origins. In all cases, MRI is the choice means of exploration, carried out with axial and coronal sections with a thickness of 2.5-3mm and T1 and T2-weighted spin echo sequences. The coronal sections may be carried out with fat signal saturation for an elective study of the size of the retrobulbar portion of the ON.
authors.affiliation: Service de neuroradiologie, hôpital Gui de Chauliac, 80, avenue Augustin-Fliche, 34295 Montpellier cedex 5, France. Electronic address: nicolasdechampfleur@orange.fr.
authors.forename: N
authors.initials: N
authors.lastname: Menjot de Champfleur
authors.forename: N
authors.initials: N
authors.lastname: Leboucq
authors.forename: S
authors.initials: S
authors.lastname: Menjot de Champfleur
authors.forename: A
authors.initials: A
authors.lastname: Bonafé
mesh_terms: D003937:Diagnosis, Differential; D019983:Guideline Adherence; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D009897:Optic Chiasm / Q000473:pathology*; D009900:Optic Nerve / Q000473:pathology*; D009901:Optic Nerve Diseases / Q000175:diagnosis* / Q000473:pathology; D020221:Optic Nerve Injuries / Q000175:diagnosis / Q000473:pathology; D019574:Optic Nerve Neoplasms / Q000175:diagnosis* / Q000473:pathology; D012680:Sensitivity and Specificity; D014792:Visual Acuity / Q000502:physiology
keywords: MRI; Optic nerve; Orbit