Pressure mapping and hemodynamic assessment of intracranial dural sinuses and dural arteriovenous fistulas with 4D Flow MRI

Abstract

SUMMARY: The feasibility of 4D flow MR imaging to visualize flow patterns and generate relative pressure maps in the dural venous sinus in healthy subjects (n < 60) and patients with dural arteriovenous fistulas (n < 7) was investigated. Dural venous drainage was classified based on torcular Herophili anatomy by using 4D flow MR imaging- derived angiograms and magnitude images. Subjects were scanned in a 3T clinical MR imaging system. 4D flow MR imaging enabled noninvasive characterization of dural sinus anatomy and mapping of relative pressure differences.