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AJNR Am J Neuroradiol. 2005 Oct;26(9):2393-6.

CT-demonstrated transcalvarial channels diagnostic of dural arteriovenous fistula.

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Department of Radiology, The Alfred Hospital, Prahran, Victoria, Australia.


MR imaging-evident intraosseous channels associated with the presence of a dural arteriovenous fistula have been described in the literature. We describe these channels in relation to a case of dural arteriovenous fistula seen on CT. The presence of this subtle sign should be sought, and the area reviewed in all CT evaluations of patients with pulsatile tinnitus.

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