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FIG 6. Reconstruction image from a 3D contrast-enhanced MPRAGE image shows relationship of intracranial veins to arachnoid granulation in a 35-year-old man with normal results of an MR imaging study. The posteroinferior cerebellar vein (arrows) is seen to enter into a CSF-isointense structure (arrowheads), consistent with an arachnoid granulation.
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