Valuation of MR Imaging for Diagnosis of Carotid-cavernous Sinus Fistulae / 实用放射学杂志

ABSTRACT

Objective To discuss the diagnostic value of MR in carotid-cavernous sinus fistulae(CCF). Methods Conventional MRI and 3D TOF MRA were performed in 23 cases of CCF confirmed by DSA. The MRI and MRA appearances of CCF were reviewed. Results The main MRI and MRA findings of CCF included enlargement of cavernous sinus, distortion and dilatation of the superior ophthalmic vein in the involved side in all cases.Dilatation of the inferior ophthalmic vein in 3 cases, superficial cerebral veins in 5 cases,dilatation of pterygoid venous plexus in 2 cases, superior petrosal sinus in 3 cases, and inferior pertrosal sinus in 2 cases. In the counterside, dilatation of cavernous sinus were found in 3 cases. Opening of posterior communicating artery in the circle of Willis happened in 17 cases. Conclusion MRI combined with MRA is able to make a reliable diagnosis of CCF, and is also able to demonstrate the condition of compensatory blood supply in brain, which is useful in the decision of the theraputic plan.