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ECR 2019 / C-2645
Non-cavernous cranial dural arteriovenous fistulas: Imaging findings that suggest them and classification
Congress: ECR 2019
Poster No.: C-2645
Type: Educational Exhibit
Keywords: Fistula, Embolisation, MR-Angiography, CT-Angiography, Catheter arteriography, Neuroradiology brain, Interventional vascular
Authors: C. CASADO PEREZ, J. García Prieto, M. D. C. CRUZ CONDE, R. CASTRO VALDES, L. Koren, A. Ramos Gonzalez, A. Hilario Barrio; Madrid/ES
DOI:10.26044/ecr2019/C-2645

Conclusion

Venous congestion as a result of the presence of CVD in DAVF is manifested in CT and MR, as focal venous ectasia, vasogenic edema, parenchymal enhancement, dilated ECA branches, cluster of vessels surrounding dural venous sinus, thrombosis of the dural venous sinuses, haemorrhage and, mainly as dilated leptomeningeal vessels and medullary vessels. Venous congestion has been identified as a risk factor for DAVF rupture and may produce local mass effect.

Although angiography remains the gold standard in the diagnosis and classification of DAVF, conventional and dynamic CT and MRI have an important role in suggesting the presence of fistulae.

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