Skip to main content

A Pilot Study to Investigate the Relationship Between Interaural Differences in Temporal Bone Anatomy and Normal Variations in Caloric Asymmetry.

Publication ,  Journal Article
Carpenter, D; Kaylie, D; Piker, E; Frank-Ito, D
Published in: Am J Audiol
March 8, 2018

PURPOSE: This study assesses interaural differences in temporal bone anatomy in subjects with normal caloric findings. METHOD: Eligible patients included those referred to the Duke University Medical Center otology clinic complaining of dizziness, with a head computed tomography scan and caloric stimulation results within normal ranges (inter-ear difference ≤ 10% or < 25% unilateral weakness). Three-dimensional reconstructions of computed tomography scans in 11 patients were used to calculate the surface area and volume of lateral semicircular canals (LSCCs), mastoid airspaces, mastoid bones, and internal auditory canal diameter and circumference. Percent differences in interaural temporal bone anatomy (i.e., left-to-right asymmetry) were analyzed and correlated with warm caloric inter-ear difference (WCD) and clinically indicated caloric predictor asymmetry. RESULTS: A multivariate model predicting WCD from 9 interaural anatomic variables demonstrated a Pearson's coefficient of 0.999. A similarly constructed model of the clinically indicated caloric predictor demonstrated a Pearson's coefficient of 0.999. The univariate correlation was strongest for WCD versus Proctor internal auditory canal diameter (r = 0.476; p = .139) and WCD versus lateral semicircular canal surface-area-to-volume ratio (r = -0.474; p = .141). CONCLUSIONS: This pilot study provides multivariate models that predict caloric asymmetry in subjects without vestibular pathologic findings per caloric testing, based on interaural differences across variables of the temporal bone anatomy. SUPPLEMENTAL MATERIAL: https://doi.org/10.23641/asha.5895988.

Duke Scholars

Altmetric Attention Stats
Dimensions Citation Stats

Published In

Am J Audiol

DOI

EISSN

1558-9137

Publication Date

March 8, 2018

Volume

27

Issue

1

Start / End Page

110 / 120

Location

United States

Related Subject Headings

  • Tomography, X-Ray Computed
  • Temporal Bone
  • Semicircular Canals
  • Retrospective Studies
  • Predictive Value of Tests
  • Pilot Projects
  • Otorhinolaryngology
  • Multivariate Analysis
  • Middle Aged
  • Male
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Carpenter, D., Kaylie, D., Piker, E., & Frank-Ito, D. (2018). A Pilot Study to Investigate the Relationship Between Interaural Differences in Temporal Bone Anatomy and Normal Variations in Caloric Asymmetry. Am J Audiol, 27(1), 110–120. https://doi.org/10.1044/2017_AJA-16-0048
Carpenter, David, David Kaylie, Erin Piker, and Dennis Frank-Ito. “A Pilot Study to Investigate the Relationship Between Interaural Differences in Temporal Bone Anatomy and Normal Variations in Caloric Asymmetry.Am J Audiol 27, no. 1 (March 8, 2018): 110–20. https://doi.org/10.1044/2017_AJA-16-0048.
Carpenter, David, et al. “A Pilot Study to Investigate the Relationship Between Interaural Differences in Temporal Bone Anatomy and Normal Variations in Caloric Asymmetry.Am J Audiol, vol. 27, no. 1, Mar. 2018, pp. 110–20. Pubmed, doi:10.1044/2017_AJA-16-0048.

Published In

Am J Audiol

DOI

EISSN

1558-9137

Publication Date

March 8, 2018

Volume

27

Issue

1

Start / End Page

110 / 120

Location

United States

Related Subject Headings

  • Tomography, X-Ray Computed
  • Temporal Bone
  • Semicircular Canals
  • Retrospective Studies
  • Predictive Value of Tests
  • Pilot Projects
  • Otorhinolaryngology
  • Multivariate Analysis
  • Middle Aged
  • Male