ArticleHearing research2023
Measurements of ear-canal geometry from high-resolution CT scans of human adult ears.
Article in Hearing research, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 11 citations in OpenAlex.
- Wideband acoustic immittance: Suitable quantities for assessing middle-ear status.The Journal of the Acoustical Society of America · 2026Article
- Shape and sound analyses of the human ear-canal geometrya).The Journal of the Acoustical Society of America · 2025Article
- Exploration of Automated Measurement for Ossicular Chains Based on 3-Dimensional Geometric Information.Cyborg and bionic systems (Washington, D.C.) · 2025Article
- Reflection function, reflectance, and area function measurements in ears of children and adults.The Journal of the Acoustical Society of America · 2024Article
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Authors and funding
9 authors at 4 institutions in 1 country.
Funding
Abstract
Description of the ear canal's geometry is essential for describing peripheral sound flow, yet physical measurements of the canal's geometry are lacking and recent measurements suggest that older-adult-canal areas are systematically larger than previously assumed. Methods to measure ear-canal geometry from multi-planar reconstructions of high-resolution CT images were developed and applied to 66 ears from 47 subjects, ages 18-90 years. The canal's termination, central axis, entrance, and first bend were identified based on objective definitions, and the canal's cross-sectional area was measured along its canal's central axis in 1-2 mm increments. In general, left and right ears from a given subject were far more similar than measurements across subjects, where areas varied by factors of 2-3 at many locations. The canal areas varied systematically with age cohort at the first-bend location, where canal-based measurement probes likely sit; young adults (18-30 years) had an average area of 44mm
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