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. 2015 Oct-Dec;9(4):356–368. doi: 10.1590/1980-57642015DN94000356

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This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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DAI after severe TBI (motor vehicle accident) well depicted on SWI. Axial SWI [A, B and C} shows diffuse and bilateral lesions involving the basal ganglia, lobar white matter, gray-white matter junction, corpus callosum and the brainstem. SWI (or gradient echo sequences) are exquisitely sensitive to blood products and the best MR sequences for DAI detection. Note that when the DAI lesions are entirely nonhemorrhagic they will not be detected on these sequences, but the will be visible as areas of high FLAIR signal.