CC BY-NC-ND 4.0 · Laryngorhinootologie 2019; 98(S 02): S146
DOI: 10.1055/s-0039-1686461
Abstracts
Otology

Endoscopic Optical Coherence Tomography in Diagnostics of Otosclerosis

J Morgenstern
1   HNO-Universitätsklinik, TU Dresden, Dresden
,
M Kemper
1   HNO-Universitätsklinik, TU Dresden, Dresden
,
L Kirsten
2   Klinisches Sensoring und Monitoring, TU Dresden, Dresden
,
M Schindler
2   Klinisches Sensoring und Monitoring, TU Dresden, Dresden
,
J Golde
2   Klinisches Sensoring und Monitoring, TU Dresden, Dresden
,
M Bornitz
1   HNO-Universitätsklinik, TU Dresden, Dresden
,
J Walther
2   Klinisches Sensoring und Monitoring, TU Dresden, Dresden
,
M Neudert
1   HNO-Universitätsklinik, TU Dresden, Dresden
,
E Koch
2   Klinisches Sensoring und Monitoring, TU Dresden, Dresden
,
T Zahnert
1   HNO-Universitätsklinik, TU Dresden, Dresden
› Author Affiliations
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Introduction:

Endoscopic Optical Coherence Tomography (eOCT) enables both high-resolution contact-free 3D-imaging of the tympanic membrane and spatial and frequency-resolved oscillation measurement via Doppler-OCT. Thus it is possible to detect causes of conduction hearing loss. In case of otosclerosis, changes in oscillation amplitude at the umbo had been showed via Laser-Doppler-Vibrometry.

Material and Methods:

The eOCT system utilizes a swept source laser with a wave length around 1300nm. Field-of-view and working distance are 10 mm. Sound stimulus was a Chirp in the frequency range between 0.5 and 5 kHz at 95 dB. Morphological and functional measurements were done on 12 Patients prior to stapes surgery. Oscillation patterns were compared to the results of normal hearing volunteers and to the audimetric data of the patients.

Results:

The tympanic membrane could be visualized almost entirely in all patients. Examination time was one minute per ear. Morphology and oscillation amplitude of the tympanic membrane showed no difference to healthy volunteers, oscillation at the umbo was altered. Parts of the ossicles were localized, oscillation measurement, as described in the literature ex vivo, was not successful.

Conclusion:

EOCT allows characterization of changes of oscillation of the middle ear in vivo in patients with otosclerosis. For mapping of the oscillation behaviour of the ossicles an increased depth range and a better sensitivity are needed.



Publication History

Publication Date:
23 April 2019 (online)

© 2019. 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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