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Korean J Radiol. 2012 Mar-Apr;13(2):237-9. doi: 10.3348/kjr.2012.13.2.237. Epub 2012 Mar 7.

Diffusion MR imaging of postoperative bilateral acute ischemic optic neuropathy.

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  • 1Department of Radiology, Chungnam National University School of Medicine, Daejeon, Korea.

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.

KEYWORDS:

Diffusion magnetic resonance imaging; Optic neuropathy, ischemic

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PMID:
22438692
[PubMed - indexed for MEDLINE]
PMCID:
PMC3303908
Free PMC Article
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