Korean Journal of Radiology

The Korean Society of Radiology (대한영상의학회)
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Diffusion MR Imaging of Postoperative Bilateral Acute Ischemic Optic Neuropathy

  • Park, Ju-Young (Department of Radiology, Chungnam National University Hospital, Chungnam National University School of Medicine) ;
  • Lee, In-Ho (Department of Radiology, Chungnam National University Hospital, Chungnam National University School of Medicine) ;
  • Song, Chang-June (Department of Radiology, Chungnam National University Hospital, Chungnam National University School of Medicine) ;
  • Hwang, Hee-Youn (Department of Anesthesiology and Pain Medicine, Eulji University Hospital)
  • Published : 2012.04.01
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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.

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References

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