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Mar 16, 19 · Most dural arteriovenous fistulas have no clear origin, although some result from identifiable causes such as traumatic head injury, infection, previous brain surgery or tumors Most authorities think that dAVFs involving the larger brain veins usually arise from progressive narrowing or blockage of one of the brain's venous sinuses, whichMar 25, 13 · The cavernous sinuses are a clinically important pair of dural sinuses They are located next to the lateral aspect of the body of the sphenoid bone This sinus receives blood from the superior and inferior ophthalmic veins, the middle superficial cerebral veins, and from another dural venous sinus;Oct 07, 19 · Dural Sinus CVT Anatomy—The dural sinuses are divided into two groups the superior and the inferior dural sinuses The superior dural sinuses comprise the superior sagittal sinus, the inferior sagittal sinus, and the straight sinus (which converge at the confluence of sinuses, or the torcular herophili), and the transv