Korean J Radiol.
2012 Apr;13(2):237-239. 10.3348/kjr.2012.13.2.237.
Diffusion MR Imaging of Postoperative Bilateral Acute Ischemic Optic Neuropathy
- Affiliations
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- 1Department of Radiology, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon 301-721, Korea. leeinho1974@hanmail.net
- 2Department of Anesthesiology and Pain Medicine, Eulji University Hospital, Daejeon 302-799, Korea.
- KMID: 1245389
- DOI: http://doi.org/10.3348/kjr.2012.13.2.237
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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