Variations in Cochlear Size of Cochlear Implant Candidates
| Autor: | Fikri Mirza Putranto, Rima Diana Dewi, Netty Lubis, Taufik Ashar, Askaroellah Aboet, Devira Zahara |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
medicine.medical_specialty
medicine.medical_treatment cochlea lcsh:Medicine Cochlear duct Computed tomography Audiology Original research 03 medical and health sciences 0302 clinical medicine Cochlear implant Temporal bone medicine otorhinolaryngologic diseases Dicom viewer 030223 otorhinolaryngology Cochlea Original Research medicine.diagnostic_test business.industry lcsh:R cochlear implant computed tomography lcsh:Otorhinolaryngology lcsh:RF1-547 medicine.anatomical_structure Otorhinolaryngology 030220 oncology & carcinogenesis temporal bone Implant sense organs business |
| Zdroj: | International Archives of Otorhinolaryngology, Vol 23, Iss 02, Pp 184-190 (2019) International Archives of Otorhinolaryngology, Volume: 23, Issue: 2, Pages: 184-190, Published: 18 JUL 2019 International Archives of Otorhinolaryngology v.23 n.2 2019 International Archives of Otorhinolaryngology Fundação Otorrinolaringologia (FORL) instacron:FORL |
| ISSN: | 1809-4864 1809-9777 |
| Popis: | Introduction The cochlear anatomy varies in each individual, and that has an impact on decisions regarding the insertion of electrodes. The measurement of the cochlear size is the routine examination required to choose the proper cochlear implant (CI) electrodes. Objective To acquire normative data on the size of the cochlea (length, width, height, scala timpani [ST] height, cochlear duct length [CDL]) of CI candidates in Medan, Indonesia. Methods This descriptive study was conducted based on high-resolution computed tomography (HRCT) temporal bone data and on HRCT temporal data manipulated to reconstruct three-dimensional (3D) multiplanar images with OsiriX MD DICOM Viewer version 9.5.1 (Pixmeo SARL, Bernex, Geneva, Switzerland) viewer of 18 patients (36 ears) who were CI candidates in Medan, Indonesia, in order to determine cochlear length (A), cochlear width, cochlear height, ST height and CDL, calculated through a simple mathematical function. Results The average cochlear length (A) was 8.75 mm (standard deviation [SD] = 0.31 mm); the average cochlear width was 6.53 mm (SD = 0.35 mm); the average cochlear height was 3.26 mm (SD = 0.24 mm) and the average ST height at the basal cochlea was 1.00 mm (SD = 0.1 mm); and 0.71 mm (SD = 0.1 mm) at the half turn of cochlea. The average total CDL was 32.45 mm (SD = 1.31 mm; range: 30.01–34.83 mm). Conclusion The cochlear size varies in each individual; therefore, the temporal bone measurement of CI candidates using HRCT is essential: for the selection of suitable implant electrodes; to minimize cochlear damages at the insertion of the electrode arrays; and to maximize the hearing improvements. |
| Databáze: | OpenAIRE |
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