Semiautomatic Cochleostomy Target and Insertion Trajectory Planning for Minimally Invasive Cochlear Implantation

Wimmer, Wilhelm; Venail, Frederic; Williamson, Tom; Akkari, Mohamed; Gerber, Nicolas; Weber, Stefan; Caversaccio, Marco; Uziel, Alain; Bell, Brett (2014). Semiautomatic Cochleostomy Target and Insertion Trajectory Planning for Minimally Invasive Cochlear Implantation. BioMed research international, 2014, p. 596498. Hindawi Publishing Corporation 10.1155/2014/596498

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A major component of minimally invasive cochlear implantation is atraumatic scala tympani (ST) placement of the electrode array. This work reports on a semiautomatic planning paradigm that uses anatomical landmarks and cochlear surface models for cochleostomy target and insertion trajectory computation. The method was validated in a human whole head cadaver model (n = 10 ears). Cochleostomy targets were generated from an automated script and used for consecutive planning of a direct cochlear access (DCA) drill trajectory from the mastoid surface to the inner ear. An image-guided robotic system was used to perform both, DCA and cochleostomy drilling. Nine of 10 implanted specimens showed complete ST placement. One case of scala vestibuli insertion occurred due to a registration/drilling error of 0.79 mm. The presented approach indicates that a safe cochleostomy target and insertion trajectory can be planned using conventional clinical imaging modalities, which lack sufficient resolution to identify the basilar membrane.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research > ARTORG Center - Image Guided Therapy
04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Ear, Nose and Throat Disorders (ENT)
10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research > ARTORG Center - Image Guided Therapy > ARTORG Center - Artificial Hearing Research

UniBE Contributor:

Wimmer, Wilhelm; Williamson, Tom; Gerber, Nicolas; Weber, Stefan; Caversaccio, Marco and Bell, Brett

Subjects:

600 Technology > 610 Medicine & health

ISSN:

2314-6133

Publisher:

Hindawi Publishing Corporation

Language:

English

Submitter:

Lars Marius Schwalbe

Date Deposited:

10 Feb 2015 07:57

Last Modified:

10 Jan 2017 14:56

Publisher DOI:

10.1155/2014/596498

PubMed ID:

25101289

BORIS DOI:

10.7892/boris.62758

URI:

https://boris.unibe.ch/id/eprint/62758

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