Intra- and interrater reliability of CT- versus MRI-based cochlear duct length measurement in pediatric cochlear implant candidates and its impact on personalized electrode array selection
- Background: Radiological high-resolution computed tomography-based evaluation of cochlear implant candidates’ cochlear duct length (CDL) has become the method of choice for electrode array selection. The aim of the present study was to evaluate if MRI-based data match CT-based data and if this impacts on electrode array choice. Methods: Participants were 39 children. CDL, length at two turns, diameters, and height of the cochlea were determined via CT and MRI by three raters using tablet-based otosurgical planning software. Personalized electrode array length, angular insertion depth (AID), intra- and interrater differences, and reliability were calculated. Results: Mean intrarater difference of CT- versus MRI-based CDL was 0.528 \(\pm\) 0.483 mm without significant differences. Individual length at two turns differed between 28.0 mm and 36.6 mm. Intrarater reliability between CT versus MRI measurements was high (intra-class correlation coefficient (ICC): 0.929–0.938). Selection of the optimal electrode array based on CT and MRI matched in 90.1% of cases. Mean AID was 629.5° based on the CT and 634.6° based on the MRI; this is not a significant difference. ICC of the mean interrater reliability was 0.887 for the CT-based evaluation and 0.82 for the MRI-based evaluation. Conclusion: MRI-based CDL measurement shows a low intrarater difference and a high interrater reliability and is therefore suitable for personalized electrode array selection.
Author: | Jan Peter ThomasORCiDGND, Hannah KleinGND, Imme HaubitzGND, Stefan DazertORCiDGND, Christiane VölterORCiDGND |
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URN: | urn:nbn:de:hbz:294-105697 |
DOI: | https://doi.org/10.3390/jpm13040633 |
Parent Title (English): | Journal of personalized medicine |
Publisher: | MDPI |
Place of publication: | Basel |
Document Type: | Article |
Language: | English |
Date of Publication (online): | 2023/12/22 |
Date of first Publication: | 2023/04/04 |
Publishing Institution: | Ruhr-Universität Bochum, Universitätsbibliothek |
Tag: | Open Access Fonds CT; MRI; angular insertion depth; cochlear duct length; cochlear implant; lateral wall electrode array; personalized electrode array; radiological measurement |
Volume: | 13 |
Issue: | 4, Article 633 |
First Page: | 633-1 |
Last Page: | 633-15 |
Note: | Article Processing Charge funded by the Deutsche Forschungsgemeinschaft (DFG) and the Open Access Publication Fund of Ruhr-Universität Bochum. |
Institutes/Facilities: | Katholisches Klinikum Bochum, Hals-, Nasen- und Ohrenheilkunde |
open_access (DINI-Set): | open_access |
Licence (English): | Creative Commons - CC BY 4.0 - Attribution 4.0 International |