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N. Khodadadi, R. Turbin, J. Farkas; Transient Cortical Blindness Following Contrast Dye Angiography: Evaluation by Diffusion Weighted Magnetic Resonance Imaging . Invest. Ophthalmol. Vis. Sci. 2003;44(13):2724.
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© ARVO (1962-2015); The Authors (2016-present)
Purpose: To report the first use of diffusion weighted magnetic resonance imaging in evaluation of angiography contrast dye induced transient cortical blindness and global amnesia. Methods: In two patients who developed cortical blindness and global amnesia following angiography, diffusion weighted magnetic resonance imaging were urgently obtained. Results: Diffusion weighted magnetic resonance imaging obtained post angiography failed to demonstrate signal abnormality suggestive of ischemia. Conclusions: It has been well documented that diffusion weighted MRI can detect early ischemic brain tissue with high sensitivity. By showing no evidence of acute ischemia in the cerebral cortices, diffusion weighted magnetic resonance imaging provides evidence against ischemia as a mechanism for transient cortical blindness and global amnesia following angiography.
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