Radiographic Analysis of the Vidian Canal and Its Utility in Petrous Internal Carotid Artery Localization

Operative Neurosurgery
Eric MasonC Arturo Solares

Abstract

Endoscopic endonasal surgery of the skull base requires expert knowledge of the anatomy and a systematic approach. The vidian canal is regarded as a reliable landmark to localize the petrous internal carotid artery (pICA) near the second genu, which can be used for orientation in deep skull base approaches. There is controversy about the relationship between the vidian canal and the pICA. To further establish the vertical relationship between the vidian canal and the pICA to aid in surgical approaches to the skull base. We utilized a collection of institutional review board-approved computed tomographic (CT) angiograms (CTAs). Fifty CTAs were studied bilaterally for 100 total sides. The vidian canal was visualized radiographically to determine whether it terminates below, at, or above the level of the pICA. Sixty-six of 100 vidian canals terminated inferior to the pICA (66%), which was the most common relationship observed. The average distance inferior to the pICA was 1.01 mm on the right, 1.18 mm on the left, and 1.09 mm of the total 66 sides. Less commonly, the vidian canal terminated at the level of the pICA canal in 34 sides (34%). The vidian canal was not observed to terminate superior to the pICA in any of the 50 CTAs st...Continue Reading

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Citations

Feb 13, 2019·European Archives of Oto-rhino-laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery·İlhan BahşiEda Didem Yalçın
Jan 18, 2020·Surgical and Radiologic Anatomy : SRA·Georgia PapavasileiouKaterina Vassiou
Feb 7, 2021·World Neurosurgery·Dimitri BennerMichael T Lawton
Aug 11, 2020·Brazilian Journal of Otorhinolaryngology·Nanditha LakshmanFahad Bapu Thondupadath Assanar

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