title: Diffusion MR imaging of postoperative bilateral acute ischemic optic neuropathy.
abstract: A 57-year-old woman experienced bilateral acute ischemic optic neuropathy after spine surgery. Routine MR imaging sequence, T2-weighted image, showed subtle high signal intensity on bilateral optic nerves. A contrast-enhanced T1 weighted image showed enhancement along the bilateral optic nerve sheath. Moreover, diffusion-weighted image (DWI) and an apparent diffusion coefficient map showed markedly restricted diffusion on bilateral optic nerves. Although MR findings of T2-weighted and contrast enhanced T1-weighted images may be nonspecific, the DWI finding of cytotoxic edema of bilateral optic nerves will be helpful for the diagnosis of acute ischemic optic neuropathy after spine surgery.
authors.affiliation: Department of Radiology, Chungnam National University School of Medicine, Daejeon, Korea.
authors.forename: Ju Young
authors.initials: JY
authors.lastname: Park
authors.forename: In Ho
authors.initials: IH
authors.lastname: Lee
authors.forename: Chang June
authors.initials: CJ
authors.lastname: Song
authors.forename: Hee Youn
authors.initials: HY
authors.lastname: Hwang
mesh_terms: D003287:Contrast Media; D038524:Diffusion Magnetic Resonance Imaging / Q000379:methods*; D005260:Female; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000601:surgery; D008875:Middle Aged; D018917:Optic Neuropathy, Ischemic / Q000175:diagnosis*; D011183:Postoperative Complications / Q000175:diagnosis*; D013130:Spinal Stenosis / Q000601:surgery
chemical_list: D003287:Contrast Media