title: Resolution of homonymous visual field loss documented with functional magnetic resonance and diffusion tensor imaging.
abstract: A 68-year-old man developed right homonymous hemianopic paracentral scotomas from acute infarction of the left extrastriate area. He was studied over the ensuing 12 months with visual fields, conventional MRI, functional MRI (fMRI), and diffusion tensor imaging (DTI). As the visual field defect became smaller, fMRI demonstrated progressively larger areas of cortical activation. DTI initially showed that the lesioned posterior optic radiations were completely interrupted. This interruption lessened in time and had disappeared by one year after onset. fMRI and DTI are innovative measures to follow functional and structural recovery in the central nervous system. This is the first reported application of these imaging techniques to acute cerebral visual field disorders.
authors.affiliation: Department of Radiology,Tokyo Metropolitan Ebara Hospital, Tokyo, Japan. masakiy@jikei.ac.jp
authors.forename: Masaki
authors.initials: M
authors.lastname: Yoshida
authors.forename: Masahiro
authors.initials: M
authors.lastname: Ida
authors.forename: Thien Huong
authors.initials: TH
authors.lastname: Nguyen
authors.forename: Marie-Therese
authors.initials: MT
authors.lastname: Iba-Zizen
authors.forename: Luc
authors.initials: L
authors.lastname: Bellinger
authors.forename: Jean Louis
authors.initials: JL
authors.lastname: Stievenart
authors.forename: Takehiko
authors.initials: T
authors.lastname: Nagao
authors.forename: Shinsuke
authors.initials: S
authors.lastname: Kikuchi
authors.forename: Takaaki
authors.initials: T
authors.lastname: Hara
authors.forename: Takuya
authors.initials: T
authors.lastname: Shiba
authors.forename: Kenji
authors.initials: K
authors.lastname: Kitahara
authors.forename: Emmanuel Alain
authors.initials: EA
authors.lastname: Cabanis
mesh_terms: D000368:Aged; D002544:Cerebral Infarction / Q000150:complications* / Q000175:diagnosis; D038524:Diffusion Magnetic Resonance Imaging / Q000379:methods*; D005500:Follow-Up Studies; D006423:Hemianopsia / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology; D006801:Humans; D008297:Male; D012075:Remission, Spontaneous; D014793:Visual Cortex / Q000098:blood supply*; D058609:Visual Field Tests; D014794:Visual Fields