Abstract
PurposeTo compare the conventional CT and MR findings of DAVFs in relation to the venous drainage pattern on digital subtraction angiography (DSA). Materials and MethodsCross-sectional imaging findings (CT and/or MR) in 92 patients were compared to the presence of cortical venous reflux (CVR) on DSA. ResultsImaging features significantly more prevalent in patients with CVR included: abnormally dilated and tortuous leptomeningeal vessels (92% vs. 4%, p<0.001) or medullary vessels (69% vs. 0%, p<0.001), venous ectasias (45% vs. 0%, p<0.001) and focal vasogenic edema (38% vs. 0%, p<0.001). The following findings trended towards association but did not reach the p value established following Bonferroni correction: dilated external carotid artery branches (71% vs. 38%, p=0.005), cluster of vessels surrounding dural venous sinus (50% vs. 19%, p=0.009), presence of hemorrhage (33 vs. 12%, p=0.040), and parenchymal enhancement (21% vs. 0%, p=0.030). ConclusionIn the appropriate clinical setting, recognition of ancillary signs presumably related to venous arterialization and congestion as well as arterial feeder hypertrophy should prompt DSA confirmation to identify DAVFs associated with CVR.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.