Anatomical significance of analysis of bone semicircular canal and vestibular aqueduct by three-dimensional image reconstruction using 3D Slicer software
HANG Gai
FENG Yu
XIE Hang
GONG Yu-kang
YAO Guo-jie
SONG Jian
XU Guo-zheng
XIE Tian-hao
Abstract：Objective To investigate the anatomical significance of analysis of bone semicircular canal and vestibular aqueduct by three-dimensional(3D)image reconstruction using 3D Slicer software.Methods The high-resolution computed tomography(HRCT)data of the temporal bone of 40 patients(80 sides;20 males and 20 females)without organic inner ear lesions were collected.The 3D Slicer software was used for 3D reconstruction,and the 3D spatial positioning data of important anatomical structures of the internal auditory canal were measured.Results The 3D images showed that the posterior lip of the internal auditory canal was oval,with a sharp posterior edge and a fixed position,which was easy to identify.The posterior lip of the internal auditory canal was selected as the P point in the 3D images.The distances from the P point to the vestibular aqueduct and the posterior semicircular canal were(9.412±1.687)mm and(10.422±1.701)mm in male patients,respectively;the length of the internal auditory canal was(9.847±0.870)mm in male patients.The distances from the P point to the vestibular aqueduct and the posterior semicircular canal were(9.068±1.133)mm and(9.858±1.089)mm in female patients,respectively;the length of the internal auditory canal was(8.727±0.964)mm in female patients.There was no significant difference in the above measurements between male and female patients(P>0.05).Conclusions The distance from the posterior wall of the internal auditory canal to the vestibular aqueduct was shorter than that to the posterior semicircular canal,suggesting that the removal of the posterior wall of the internal auditory canal is more likely to cause damage to the vestibular aqueduct.The external opening of the vestibular aqueduct and the endolymphatic sac are close to the dura mater of the posterior wall of the internal auditory canal,suggesting that the injury to these structures should be avoided when shearing the dura mater.
Keywords：Bony semicircular canalVestibular aqueduct3D Slicer softwareThree-dimensional image reconstruction technologyImage anatomy
Publication Date：2024-02-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 79-83 )