Susceptibility-Weighted Imaging in Cranial Dural Arteriovenous Fistulas

A, Axial T2-weighted image showing subtle tortuous flow voids in the right occipital region (thick white arrow). B, SWI minimal intensity projection image is showing abnormally conspicuous cortical veins more on the right side (thin white arrows) with a cluster of vessels in the right occipital region, thought to represent collateral venous flow (thick white arrow). C, Dynamic contrast-enhanced MR venographic study is showing the occluded right distal transverse and sigmoid venous sinuses (black arrow). D, DSA study revealed multiple dural arteriovenous fistulas (thin black arrows) in the region of the superior sagittal sinus and transverse sinuses.