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  • Title: Finding the Inferior Petrosal Sinus for Embolizing Cavernous Dural Arteriovenous Fistula Using Preoperative Computed Tomography Angiography.
    Author: Zhang L, Zeng F, Wang J, Chen F.
    Journal: World Neurosurg; 2019 Jun; 126():e1069-e1074. PubMed ID: 30878755.
    Abstract:
    BACKGROUND: Inferior petrosal sinus (IPS) has been commonly adopted as a route for embolizing cavernous dural arteriovenous fistula (cDAVF). According to previous anatomical studies, >90% of persons have an IPS. Because the exact confluence position of the IPS with an internal jugular vein can be difficult to obtain using preoperative digital subtraction angiography (DSA), catheterizing into the IPS during endovascular treatment can sometimes be very difficult. Because the anatomical information has not been attainable, this route has not been as widely used. Thus, methods remain to be developed to allow the IPS to play its due role in the embolization of cDAVF. METHODS: Seven cases of cDAVF were diagnosed by DSA. The 7 patients also underwent preoperative computed tomography angiography (CTA) and were treated by transvenous embolization. RESULTS: Compared with DSA, the confluence position of the IPS with the internal jugular vein was easier to find using preoperative CTA in 6 cases. Based on this anatomical information, 6 cases were successfully embolized via the IPS route and 1 via the superior ophthalmic vein route. CONCLUSIONS: Detailed anatomical information of the IPS can be obtained from preoperative CTA images. Thus, CTA can help localize the IPS and allow for embolization of cDAVF via the IPS route.
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