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Temporal bone anatomy characteristics in superior semicircular canal dehiscence.

Publication ,  Journal Article
de Jong, MA; Carpenter, DJ; Kaylie, DM; Piker, EG; Frank-Ito, DO
Published in: J Otol
December 2017

INTRODUCTION: Superior semicircular canal dehiscence (SCD) remains difficult to diagnose despite advances in high-resolution computed tomography (HRCT) imaging. We hypothesize possible associations between gross temporal bone anatomy and sub-millimeter pathology of the semicircular canals, which may supplement imaging and clinical suspicion. This pilot study investigates differences in gross temporal bone anatomic parameters between temporal bones with and without SCD. METHODS: Records were reviewed for 18 patients referred to an otology clinic complaining of dizziness with normal caloric stimulation results indicative of non-vestibular findings. Eleven patients had normal temporal bone anatomy while seven had SCD. Three-dimensional reconstruction of every patient's temporal bone anatomy was created from patient-specific computational tomography images. Surface area (SA), volume (V), and SA to V ratios (SA:V) were computed across temporal bone anatomical parameters. RESULTS: SCD temporal bones have significantly smaller V, and larger temporal bone SA. Mean (±SD) V was 21,484 ± 3,921 mm3 in temporal bones without SCD and 16,343 ± 34,471 mm3 for those with SCD. Their respective SA were 13,733 ± 1,603 mm2 and 18,073 ± 3,002 mm2. Temporal bone airspaces and lateral semicircular canals did not demonstrate significant differences where SCD was and was not present. Plots of MVwarm response against computed SCD temporal bone anatomic parameters (SA, V and SA:V) showed moderate to strong correlations: temporal bone SA:V (r = 0.64), temporal bone airspace V (r = 0.60), temporal bone airspace SA (r = 0.55), LSCC SA (r = 0.51), and LSCC-to-TM Distance (r = 0.65). CONCLUSIONS: This analysis demonstrated that SCD is associated with decreased temporal bone volume and density. The defect in SCD does not appear to influence caloric responses.

Duke Scholars

Published In

J Otol

DOI

EISSN

2524-1753

Publication Date

December 2017

Volume

12

Issue

4

Start / End Page

185 / 191

Location

China

Related Subject Headings

  • 3202 Clinical sciences
 

Citation

APA
Chicago
ICMJE
MLA
NLM
de Jong, M. A., Carpenter, D. J., Kaylie, D. M., Piker, E. G., & Frank-Ito, D. O. (2017). Temporal bone anatomy characteristics in superior semicircular canal dehiscence. J Otol, 12(4), 185–191. https://doi.org/10.1016/j.joto.2017.08.003
Jong, Marrigje A. de, David J. Carpenter, David M. Kaylie, Erin G. Piker, and Dennis O. Frank-Ito. “Temporal bone anatomy characteristics in superior semicircular canal dehiscence.J Otol 12, no. 4 (December 2017): 185–91. https://doi.org/10.1016/j.joto.2017.08.003.
de Jong MA, Carpenter DJ, Kaylie DM, Piker EG, Frank-Ito DO. Temporal bone anatomy characteristics in superior semicircular canal dehiscence. J Otol. 2017 Dec;12(4):185–91.
de Jong, Marrigje A., et al. “Temporal bone anatomy characteristics in superior semicircular canal dehiscence.J Otol, vol. 12, no. 4, Dec. 2017, pp. 185–91. Pubmed, doi:10.1016/j.joto.2017.08.003.
de Jong MA, Carpenter DJ, Kaylie DM, Piker EG, Frank-Ito DO. Temporal bone anatomy characteristics in superior semicircular canal dehiscence. J Otol. 2017 Dec;12(4):185–191.

Published In

J Otol

DOI

EISSN

2524-1753

Publication Date

December 2017

Volume

12

Issue

4

Start / End Page

185 / 191

Location

China

Related Subject Headings

  • 3202 Clinical sciences