Neurosarcoidosis Presenting as Acute Infarction on Diffusion-Weighted MR Imaging: Summary of Radiologic Findings
M.H. Hodgea,
R.L. Williamsa and
M.B. Fukuia
a From the Department of Radiology, Allegheny General Hospital, Pittsburgh, Pa

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Fig 1. A, Fluid-attenuated inversion recovery axial image of the brain (TR = 9000, TE = 110, TI = 2500) demonstrates hyperintensity in the left frontal subcortical white matter. B, T1-weighted axial image after gadolinium administration (TR = 65, TE = 15) demonstrates enhancement in the left posterior frontal subcortical white matter.
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Fig 2. Diffusion-weighted (TR = 3900, TE = 94, B = 1000, number of gradient directions = 90) imaging (A) with corresponding apparent diffusion coefficient map (B) shows restricted diffusion in the left basal ganglia extending into the deep periventricular white matter consistent with acute infarction.
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Fig 3. Axial T2-weighted images of the brain (TR = 6000, TE = 125) show multiple areas of hyperintensity within the subcortical white matter parenchyma in the medial right temporal lobe (A) and posterior left frontal lobe (B). T1-weighted (TR = 635, TE = 17) gadolinium-enhanced sequences show nodular dural and pial enhancement (C).
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