Weber, Lena and Kwok, Pingling and Picou, Erin M. and Wendl, Christina and Bohr, Christopher and Marcrum, Steven C. (2022) Measuring the cochlea using a tablet-based software package: influence of imaging modality and rater background. HNO, 70 (10). pp. 769-777. ISSN 0017-6192, 1433-0458
Full text not available from this repository. (Request a copy)Abstract
Background Cochlear duct length (CDL) is subject to significant individual variation. In the context of cochlear implantation, adapting the electrode array length to the CDL is of potential interest, as it has been associated with improvements in both speech recognition and sound quality. Using a tablet-based software package, it is possible to measure CDL at the level of the organ of Corti (CDLOC) to select appropriate electrode array lengths based on individual cochlear anatomy. Objective To identify effects of imaging modality and rater background on CDL estimates. Methods Magnetic resonance imaging (MRI) and flat-panel volume CT (fpVCT) scans of 10 patients (20 cochleae) were analyzed using the OTOPLAN software package (MED-EL, Innsbruck, Austria). Raters were an otorhinolaryngology (ORL) specialist, an ORL resident, and an audiologist. To analyze effects of rater background and imaging modality on CDL measurements, linear mixed models were constructed. Results Measurements showed mean CDLOC(fpVCT) = 36.69 +/- 1.78 mm and CDLOC(MRI) = 36.81 +/- 1.87 mm. Analyses indicated no significant effect of rater background (F(2, 105) = 0.84; p = 0.437) on CDL estimates. Imaging modality, on the other hand, significantly affected CDL (F (1, 105) = 20.70; p < 0.001), whereby estimates obtained using MRI were 0.89 mm larger than those obtained using fpVCT. Conclusion No effect of rater background on CDL estimates could be identified, suggesting that comparable measurements could be obtained by personnel other than specially trained neurootologists. While imaging modality (fpVCT vs. MRI) did impact CDL results, the difference was small and of questionable clinical significance.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | FLAT-PANEL CT; DUCT LENGTH; ELECTRODE; IMPLANTATION; PERFORMANCE; INSERTION; ADULTS; Cochlear implant; Cochlear duct length; OTOPLAN; Magnetic resonance imaging; Computed tomography |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Hals-Nasen-Ohren-Heilkunde |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 05 Feb 2024 13:15 |
| Last Modified: | 05 Feb 2024 13:15 |
| URI: | https://pred.uni-regensburg.de/id/eprint/57168 |
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