Internal Carotid Artery and Its Relationship with Structures in Sellar Region: Anatomy Study and Its Clinical Applications.

Internal Carotid Artery and Its Relationship with Structures in Sellar Region: Anatomy Study and Its Clinical Applications.

World Neurosurg. 2017 Oct 03;:

Authors: Zhang Y, Yang W

Abstract
BACKGROUND: Complications of the ICA in surgeries are rare but severe. This study aims to locate the ICA with 5 stationary bony structures in the sellar region: the anterior clinoid process (ACP), the tuberculum sellae, the bottom of the hypophyseal fossa, the posterior edge of the hypophyseal fossa and the post clinoid process and do measurements to determine their anatomic relationship with the ICA.
METHODS: After multiple planar reconstructions on computer tomographic angiography images of 120 ICA in 60 individuals, we defined the 5 bony structures as 5 origins in horizontal, sagittal and vertical planes with the 3D coordinate system and got the cross-sections of bilateral ICA on the coronal plane passing through each origin. We measured the distances between the cross-sections and the origins and angles between the horizontal plane and the line passing through the origin and the cross sections on each coronal plane. We also measured the distances between bilateral ICA on the 5 coronal planes. Besides, we measured the coordinate of the anterior edge of bilateral ICA taking the anterior clinoid process as the origin.
RESULTS: With the three-dimensional coordinate system, we located the ICA to the bony structures in skull base. Distance between bilateral ICA on coronal planes is 18.8±2.9mm, 23.6±3.7mm, 19.9±3.4mm, 24.7±4.3mm, 23.5±3.5mm, from anterior to posterior respectively.
CONCLUSION: The 3D coordinate system used in this study is of value in preoperational assessment and data we obtained indicate the safety ranges avoiding damage to the ICA in surgeries.

PMID: 28986226 [PubMed - as supplied by publisher]

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