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Imaging cochlear implantation with round window insertion in human temporal bones and cochlear morphological variation using high-resolution cone beam CT

Conclusions: The present experimental set-up of high spatial resolution cone-beam computed tomography (CBCT) showed advantages of demonstrating the critical landmarks of the cochlea in identifying the position of intracochlear electrode contacts and has the potential for clinical application in coch...

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Autores principales: Zou, Jing, Lähelmä, Jaakko, Koivisto, Juha, Dhanasingh, Anandhan, Jolly, Claude, Aarnisalo, Antti, Wolff, Jan, Pyykkö, Ilmari
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Informa Healthcare 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4487572/
https://www.ncbi.nlm.nih.gov/pubmed/25675836
http://dx.doi.org/10.3109/00016489.2014.993090
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author Zou, Jing
Lähelmä, Jaakko
Koivisto, Juha
Dhanasingh, Anandhan
Jolly, Claude
Aarnisalo, Antti
Wolff, Jan
Pyykkö, Ilmari
author_facet Zou, Jing
Lähelmä, Jaakko
Koivisto, Juha
Dhanasingh, Anandhan
Jolly, Claude
Aarnisalo, Antti
Wolff, Jan
Pyykkö, Ilmari
author_sort Zou, Jing
collection PubMed
description Conclusions: The present experimental set-up of high spatial resolution cone-beam computed tomography (CBCT) showed advantages of demonstrating the critical landmarks of the cochlea in identifying the position of intracochlear electrode contacts and has the potential for clinical application in cochlear implant (CI) surgery. Objective: To evaluate a newly developed CBCT system in defining CI electrode array in human temporal bone and cochlear morphological variation. Methods: Standard electrode, flexible tip electrode (Flex28), and an experimental electrode array with 36 contacts from MED-EL were implanted into the cochleae of six human temporal bones through an atraumatic round window membrane insertion. The cochleae were imaged with 900 frames using an experimental set-up based on a CBCT scanner installed with Superior SXR 130-15-0.5 X-ray tube in combination with filtration of copper and aluminum. Results: In all temporal bones, the landmarks of the cochlea, modiolus, osseous spiral lamina, round window niche, and stapes were demonstrated at an average level of 3.4–4.5. The contacts of electrode arrays were clearly shown to locate in the scala tympani. There was a linear correlation between the ‘A’ value and cochlea height, and between the A value and actual electrode insertion length for the first 360° insertion depth.
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spelling pubmed-44875722015-08-03 Imaging cochlear implantation with round window insertion in human temporal bones and cochlear morphological variation using high-resolution cone beam CT Zou, Jing Lähelmä, Jaakko Koivisto, Juha Dhanasingh, Anandhan Jolly, Claude Aarnisalo, Antti Wolff, Jan Pyykkö, Ilmari Acta Otolaryngol Original Article Conclusions: The present experimental set-up of high spatial resolution cone-beam computed tomography (CBCT) showed advantages of demonstrating the critical landmarks of the cochlea in identifying the position of intracochlear electrode contacts and has the potential for clinical application in cochlear implant (CI) surgery. Objective: To evaluate a newly developed CBCT system in defining CI electrode array in human temporal bone and cochlear morphological variation. Methods: Standard electrode, flexible tip electrode (Flex28), and an experimental electrode array with 36 contacts from MED-EL were implanted into the cochleae of six human temporal bones through an atraumatic round window membrane insertion. The cochleae were imaged with 900 frames using an experimental set-up based on a CBCT scanner installed with Superior SXR 130-15-0.5 X-ray tube in combination with filtration of copper and aluminum. Results: In all temporal bones, the landmarks of the cochlea, modiolus, osseous spiral lamina, round window niche, and stapes were demonstrated at an average level of 3.4–4.5. The contacts of electrode arrays were clearly shown to locate in the scala tympani. There was a linear correlation between the ‘A’ value and cochlea height, and between the A value and actual electrode insertion length for the first 360° insertion depth. Informa Healthcare 2015-05-04 2015-02-13 /pmc/articles/PMC4487572/ /pubmed/25675836 http://dx.doi.org/10.3109/00016489.2014.993090 Text en © Informa Healthcare http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Zou, Jing
Lähelmä, Jaakko
Koivisto, Juha
Dhanasingh, Anandhan
Jolly, Claude
Aarnisalo, Antti
Wolff, Jan
Pyykkö, Ilmari
Imaging cochlear implantation with round window insertion in human temporal bones and cochlear morphological variation using high-resolution cone beam CT
title Imaging cochlear implantation with round window insertion in human temporal bones and cochlear morphological variation using high-resolution cone beam CT
title_full Imaging cochlear implantation with round window insertion in human temporal bones and cochlear morphological variation using high-resolution cone beam CT
title_fullStr Imaging cochlear implantation with round window insertion in human temporal bones and cochlear morphological variation using high-resolution cone beam CT
title_full_unstemmed Imaging cochlear implantation with round window insertion in human temporal bones and cochlear morphological variation using high-resolution cone beam CT
title_short Imaging cochlear implantation with round window insertion in human temporal bones and cochlear morphological variation using high-resolution cone beam CT
title_sort imaging cochlear implantation with round window insertion in human temporal bones and cochlear morphological variation using high-resolution cone beam ct
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4487572/
https://www.ncbi.nlm.nih.gov/pubmed/25675836
http://dx.doi.org/10.3109/00016489.2014.993090
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