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Related Experiment Video

Updated: Nov 28, 2025

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention
04:32

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention

Published on: December 20, 2024

655

[Computer tomography demonstrations of single-sided deafness].

Jian Hu1, Xiaoyun Zhao1, Qian Wu1

  • 1Department of Otorhinolaryngology Head and Neck Surgery，the Second Hospital of Lanzhou University，Lanzhou，730030，China.

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi = Journal of Clinical Otorhinolaryngology Head and Neck Surgery
|November 30, 2020
PubMed
Summary

Common inner ear and internal auditory canal malformations, specifically cochlear nerve canal and internal auditory canal stenosis, are frequent in children with single-sided deafness (SSD). High-resolution computed tomography (HRCT) of the temporal bone is valuable for diagnosing these conditions.

Keywords:
bony canal for cochlear nervecomputer tomographyinternal auditory canalsingle side deafness

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Area of Science:

  • Otolaryngology
  • Pediatric Radiology
  • Neuroscience

Background:

  • Single-sided deafness (SSD) in children can stem from various inner ear and internal auditory canal malformations.
  • Understanding the prevalence and imaging characteristics of these malformations is crucial for diagnosis and management.

Purpose of the Study:

  • To determine the distribution of inner ear and internal auditory canal malformations in children with SSD.
  • To investigate the imaging etiology of SSD by comparing quantitative parameters of bone structures between affected and normal ears.

Main Methods:

  • Retrospective analysis of 40 children with SSD diagnosed via HRCT of the temporal bone.
  • Measurement of key bone structures: bone island area, vestibular width, internal auditory canal width, cochlear height, and cochlear basal axis width.
  • Paired t-tests were used to compare measurements between the deaf and normal ears.

Main Results:

  • Inner ear deformities were present in 62.5% of SSD cases.
  • Cochlear nerve canal deformities (stenosis or atresia) were most common (57.5%), followed by internal auditory canal deformities (15%).
  • Significant differences were found in cochlear nerve canal width, internal auditory canal width, and bone island area between deaf and normal ears.

Conclusions:

  • Cochlear nerve canal stenosis and internal auditory canal stenosis are the primary inner ear malformations associated with pediatric SSD.
  • HRCT of the temporal bone is a highly effective imaging modality for identifying inner ear deformities in children with SSD.