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- W2603075708 abstract "BACKGROUND: Treatment of basilar artery aneurysms is challenging. While endovascular techniques have dominated, there still remain circumstances where open surgical clipping is required or preferred. Minimally invasive “keyhole” approaches are being used more frequently to provide the durability of surgical clipping with a lower morbidity profile; however, careful patient selection is required. The supraorbital “keyhole” approach has been described for the treatment of basilar artery aneurysms, but careful assessment of the basilar exposure is necessary to ensure proper visualization of the aneurysm and ability to obtain proximal vascular control. Various methods of estimating the basilar artery exposure in this approach have been described, including the anterior skull base line and the posterior clinoid line, but both are unreliable and inaccurate. OBJECTIVE: To propose a new method, the orbital roof-dorsum line, to simply and accurately predict the basilar artery exposure. METHODS: CT angiograms for 20 consecutive unique patients were analyzed to obtain the anterior skull base line, posterior clinoid line, and the orbital roof-dorsum line. CT angiograms were then loaded onto a Stealth neuronavigation system (Medtronic, Minneapolis, Minnesota) to obtain “true” visualization lengths. A case illustration is presented. RESULTS: Pairwise comparison tests demonstrated that both the anterior skull base and the posterior clinoid estimation lines differed significantly from the “true” value (P < .0001). Our orbital roof-dorsum estimation provided results that accurately predicted the “true” value (P = .71). CONCLUSION: The orbital roof-dorsum line provides a simple and reliable method of estimating basilar artery exposure and should be used whenever considering patients for surgical clipping by this approach." @default.
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- W2603075708 date "2017-03-20" @default.
- W2603075708 modified "2023-09-27" @default.
- W2603075708 title "Supraorbital Keyhole Craniotomy for Basilar Artery Aneurysms: Accounting for the “Cliff” Effect" @default.
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- W2603075708 doi "https://doi.org/10.1093/ons/opw040" @default.
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