Correlation Between Cochlear Length, Insertion Angle, and Tonotopic Mismatch for MED-EL FLEX28 Electrode Arrays
| Autor: | R. Quatre, Vincent Péan, Noémie Dutrieux, Sébastien Schmerber |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
business.industry
medicine.medical_treatment Anatomy Cochlear Implantation Sensory Systems Cochlea Correlation medicine.anatomical_structure Cochlear Implants Otorhinolaryngology Organ of Corti Cochlear implant Electrode otorhinolaryngologic diseases Electrode array Medicine Humans sense organs Neurology (clinical) Tonotopy business Spiral Ganglion Spiral ganglion Retrospective Studies |
| Zdroj: | Otologyneurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology. 43(1) |
| ISSN: | 1537-4505 |
| Popis: | OBJECTIVE To investigate the relationship between cochlear length, insertion angle, and tonotopic mismatch and to compare the tonotopic mismatches with respect to the spiral ganglion and the organ of Corti. STUDY DESIGN Retrospective. SETTING Tertiary referral center with cochlear implant program. PATIENTS Analyses of patients' computed tomography images after cochlear implant surgery. INTERVENTION Cochlear implantation with 28-mm-long straight lateral wall electrode arrays. MAIN OUTCOME MEASURE Cochlear length, insertion angle, and insertion depth were assessed using the OTOPLAN software. Tonotopic mismatch for each electrode contact was estimated using the Greenwood (organ of Corti) and the Stakhovskaya (spiral ganglion) maps and compared. RESULTS 106 cochleae were analyzed. 99% of the electrode arrays were located in the tympanic ramp. The insertion was complete in 96% of cases. The mean cochlear length was 34.5 mm and the mean insertion angle of the apical electrode was 545°. Cochlear length was negatively correlated with the insertion angle of the contacts E1 to E9 (all p |
| Databáze: | OpenAIRE |
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