Intravenous digital subtraction angiography of the intracranial veins and dural sinuses.

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Abstract
The i.v. digital subtraction angiographic (IV DSA) examinations of 100 patients studied for abnormalities unrelated to the intracranial venous structures were reviewed to determine and tabulate the frequency and adequacy of visualization of the venous drainage of the brain. Patients (25) were specifically evaluated with IV DSA for abnormalities of the intracranial veins and sinuses. Conditions studied included compression, displacement or occlusion of the venous structures; carotid-cavernous sinus fistulas; tumors of the base of the skull, including glomus tumors; and normal variations in the position, size and course of the venous structures. When combined with computed tomography, IV DSA is usually of sufficient quality to replace conventional angiography in the evaluation of the larger venous structures of the head and neck.