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Selection of the appropriate cochlear electrode array using a specifically developed research software application

Published online by Cambridge University Press:  18 June 2018

E H Stefanescu  and
S Motoi
E H Stefanescu*
Affiliation:
Department of ENT, Faculty of Medicine, ‘Victor Babes’ University of Medicine and Pharmacy, Timisoara, Romania
S Motoi
Affiliation:
Department of Radiology, Faculty of Medicine, ‘Victor Babes’ University of Medicine and Pharmacy, Timisoara, Romania
*
Author for correspondence: Dr Eugen Horatiu Stefanescu, ENT Department, ‘Victor Babes’ University of Medicine and Pharmacy, Piața Eftimie Murgu 2, Timișoara 300041, Romania E-mail: [email protected]
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Abstract

Objective

To evaluate the usefulness and reliability of a research software application for the estimation of an individual's cochlear duct length as a basis for electrode selection.

Methods

In this prospective cohort study, 21 consecutive patients (23 ears) implanted with a cochlear electrode were investigated. The study comprised 19 children (2 bilateral) and 2 adults.

Results

The measured ‘A’ distances (the largest distance from the round window to the contralateral wall) corresponded to cochlear duct lengths of 28.5–36.4 mm. The mean cochlear duct length was 34.05 ± 1.72 mm (33.60 ± 2.27 mm in females and 34.35 ± 1.27 mm in males). Full insertion was achieved in all but two cases. No misplaced electrode array or electrode fold-over was detected. In all but three ears, the electrode was chosen based on the research software application's indication.

Conclusion

The results show a good correlation between the pre-operatively predicted insertion depths using the software application and those post-operatively measured using X-ray. The insertion length predicted by the software was always longer than that measured via X-ray.

Keywords

Multidetector Computed TomographyCochlear ImplantsCochlear DuctComputer Applications SoftwareRound WindowEar
Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 132 , Issue 6 , June 2018 , pp. 544 - 549
Copyright
Copyright © JLO (1984) Limited, 2018 

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Footnotes

Dr E H Stefanescu takes responsibility for the integrity of the content of the paper

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