Measurements of ear-canal geometry from high-resolution CT scans of human adult ears.
Age related ear canal areas
CT Scan ear canal
Ear canal anatomy
Journal
Hearing research
ISSN: 1878-5891
Titre abrégé: Hear Res
Pays: Netherlands
ID NLM: 7900445
Informations de publication
Date de publication:
07 2023
07 2023
Historique:
received:
01
08
2022
revised:
16
04
2023
accepted:
26
04
2023
pmc-release:
01
07
2024
medline:
26
5
2023
pubmed:
19
5
2023
entrez:
18
5
2023
Statut:
ppublish
Résumé
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
Identifiants
pubmed: 37201272
pii: S0378-5955(23)00094-1
doi: 10.1016/j.heares.2023.108782
pmc: PMC10219681
mid: NIHMS1901761
pii:
doi:
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Langues
eng
Sous-ensembles de citation
IM
Pagination
108782Subventions
Organisme : NIDCD NIH HHS
ID : R15 DC014129
Pays : United States
Informations de copyright
Copyright © 2023 Elsevier B.V. All rights reserved.
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