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KMID : 0880420120130020237
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Korean Journal of Radiology
2012 Volume.13 No. 2 p.237 ~ p.239
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Diffusion MR Imaging of Postoperative Bilateral Acute Ischemic Optic Neuropathy
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Park Ju-Young
Lee In-Ho
Song Chang-June
Hwang Hee-Youn
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Abstract
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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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KEYWORD
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Optic neuropathy, ischemic, Diffusion magnetic resonance imaging
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