High Resolution Computed Tomography Atlas of the Porcine Temporal Bone and Skull Base: Anatomical Correlates for Traumatic Brain Injury Research

Document Type

Article

Abstract

Brain injuries are a significant cause of morbidity and mortality worldwide. Auditory and vestibular dysfunction may occur following trauma to the temporal bone (TB), including the lateral skull base. The porcine model is a commonly used large animal model for investigating brain injury. Reports detailing porcine TB anatomy based on high resolution computed tomography (HRCT) imaging, however, are limited. Herein, we employ HRCT to evaluate and describe the bony anatomy of the porcine TB and lateral skull base. High-resolution multi-detector and cone beam CT were used to image porcine TBs (n = 16). TBs were analyzed for major anatomical structures and compared to human species. Porcine temporal bone anatomy was readily identifiable by HRCT. Although some variability exists, the ossicular chain, vestibule, cochlea, course of the facial nerve, and skull base are similar to those of humans. Major differences included position of the external auditory canal and mastoid, as well as presence of the petrous carotid canal. Study findings may serve as an atlas to evaluate the porcine middle and inner ear, as well as lateral skull base injuries for future porcine brain injury models or other studies that require CT-based analysis.

Medical Subject Headings

Animals; Brain Injuries, Traumatic (diagnostic imaging); Research; Skull Base (diagnostic imaging); Swine; Temporal Bone (diagnostic imaging); Tomography, X-Ray Computed

Publication Date

4-1-2019

Publication Title

Journal of neurotrauma

E-ISSN

1557-9042

Volume

36

Issue

7

First Page

1029

Last Page

1039

PubMed ID

29969939

Digital Object Identifier (DOI)

10.1089/neu.2018.5808

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