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Evaluation of the Relationship between the NRT-Ratio, Cochlear Anatomy, and Insertions Depth of Perimodiolar Cochlear Implant Electrodes
Joint Authors
Todt, Ingo
Rademacher, G.
Mittmann, P.
Mutze, Sven
Hassepass, Frederike
Ernst, Arne
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-12-29
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
The position of the cochlear implant electrode array within the scala tympani is essential for an optimal postoperative hearing benefit.
If the electrode array changes in between the scalae intracochlearly (i.e., from scala tympani to scala vestibuli), a reduced auditory performance can be assumed.
We established a neural response telemetry-ratio (NRT-ratio) which corresponds with the scalar position of the electrodes but shows within its limits a variability.
The aim of this study was to determine if insertion depth angle or cochlea size influences the NRT-ratio.
The intraoperative electrophysiological NRT data of 26 patients were evaluated.
Using a flat panel tomography system, the position of the electrode array was evaluated radiologically.
The insertion depth angle of the electrode, the cochlea size, and the NRT-ratio were calculated postoperatively.
The radiological results were compared with the intraoperatively obtained electrophysiological data (NRT-ratio) and statistically evaluated.
In all patients the NRT-ratio, the insertion depth angle, and the cochlea size could be determined.
A significant correlation between insertional depth, cochlear size, and the NRT-ratio was not found.
The NRT-ratio is a reliable electrophysiological tool to determine the scalar position of a perimodiolar electrode array.
The NRT-ratio can be applied independent from insertion depth and cochlear size.
American Psychological Association (APA)
Mittmann, P.& Rademacher, G.& Mutze, Sven& Hassepass, Frederike& Ernst, Arne& Todt, Ingo. 2015. Evaluation of the Relationship between the NRT-Ratio, Cochlear Anatomy, and Insertions Depth of Perimodiolar Cochlear Implant Electrodes. BioMed Research International،Vol. 2015, no. 2015, pp.1-6.
https://search.emarefa.net/detail/BIM-1056442
Modern Language Association (MLA)
Mittmann, P.…[et al.]. Evaluation of the Relationship between the NRT-Ratio, Cochlear Anatomy, and Insertions Depth of Perimodiolar Cochlear Implant Electrodes. BioMed Research International No. 2015 (2015), pp.1-6.
https://search.emarefa.net/detail/BIM-1056442
American Medical Association (AMA)
Mittmann, P.& Rademacher, G.& Mutze, Sven& Hassepass, Frederike& Ernst, Arne& Todt, Ingo. Evaluation of the Relationship between the NRT-Ratio, Cochlear Anatomy, and Insertions Depth of Perimodiolar Cochlear Implant Electrodes. BioMed Research International. 2015. Vol. 2015, no. 2015, pp.1-6.
https://search.emarefa.net/detail/BIM-1056442
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1056442