Open Access
CC BY-NC-ND 4.0 · Laryngorhinootologie 2022; 101(S 02): S243-S244
DOI: 10.1055/s-0042-1746919
Abstracts | DGHNOKHC
Otology / Neurootology / Audiology: Middle ear

Endoscopic Optical Coherence Tomography for Determination of the Anatomy of the Tympanic Membrane in vivo

Authors

  • Joseph Morgenstern

    1   Klinik und Poliklinik für Hals-, Nasen- und Ohrenheilkunde, Universitätsklinikum, TU Dresden, Ear Research Center Dresden Dresden

  • Theodor Kreusch

    1   Klinik und Poliklinik für Hals-, Nasen- und Ohrenheilkunde, Universitätsklinikum, TU Dresden, Ear Research Center Dresden Dresden

  • Jonas Golde

    2   Klinik und Poliklinik für Anaesthesiologie und Intensivtherapie, Universitätsklinikum, TU Dresden, Klinisches Sensoring und Monitoring Dresden

  • Lars Kirsten

    2   Klinik und Poliklinik für Anaesthesiologie und Intensivtherapie, Universitätsklinikum, TU Dresden, Klinisches Sensoring und Monitoring Dresden

  • Matthias Bornitz

    1   Klinik und Poliklinik für Hals-, Nasen- und Ohrenheilkunde, Universitätsklinikum, TU Dresden, Ear Research Center Dresden Dresden

  • Marcus Neudert

    1   Klinik und Poliklinik für Hals-, Nasen- und Ohrenheilkunde, Universitätsklinikum, TU Dresden, Ear Research Center Dresden Dresden

  • Edmund Koch

    2   Klinik und Poliklinik für Anaesthesiologie und Intensivtherapie, Universitätsklinikum, TU Dresden, Klinisches Sensoring und Monitoring Dresden

  • Thomas Zahnert

    1   Klinik und Poliklinik für Hals-, Nasen- und Ohrenheilkunde, Universitätsklinikum, TU Dresden, Ear Research Center Dresden Dresden
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Introduction

For the evaluation of the diagnostic value of Optical Coherence Tomography (OCT), knowledge of the geometry of the healthy tympanic membrane is crucial. Literature data are mainly based on histological data and small sample sizes. Systematic studies in vivo are not available.

Material/methodology

In our study, 35 healthy ears of test subjects between the ages of 25 and 87 years (mean 46.7 years) were examined. We determined parameters such as longitudinal and transverse diameters, angles and the thickness of the eardrum at defined points in the central area of ​​the pars tensa. The OCT system with an endoscope of 3.5 mm diameter uses a laser in the wavelength range around 1300 nm and a depth measuring range of 8 mm.

Results

The thickness of the eardrums, averaged over the defined points, was between 0.08 and 0.16 mm. For the individual points, the mean value of all eardrums was between 0.11 mm and 0.13 mm. The mean longitudinal diameter in the annulus plane was 8.7 mm, the transverse diameter 7.3 mm. No correlation between the diameter and thickness of the eardrum could be seen.

Conclusion

The examined eardrums showed a wide range in terms of their thickness. Overall, the results of our study are at the upper end of the range given in the literature. However, a shrinkage of the specimens of up to 30% due to the preparation for histology has been observed. With our results, reference data are now available for Optical Coherence Tomography of the middle ear.

Else Kröner Fresenius Center for Digital Health



Publication History

Article published online:
24 May 2022

© 2022. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).

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