1. Minimally Invasive Cochlear Implantation Assisted by Intraoperative CT Scan Combined to Neuronavigation
- Author
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Caroline Guigou, Alexis Bozorg-Grayeli, Sonia Duret, Mickael Grelat, Equipe IFTIM [ImViA - EA7535], Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon)-Centre Régional de Lutte contre le cancer Georges-François Leclerc [Dijon] (UNICANCER/CRLCC-CGFL), UNICANCER-UNICANCER-Imagerie et Vision Artificielle [Dijon] (ImViA), and Université de Bourgogne (UB)-Université de Bourgogne (UB)
- Subjects
Adult ,Neuronavigation ,[SDV]Life Sciences [q-bio] ,Dissection (medical) ,03 medical and health sciences ,0302 clinical medicine ,Imaging, Three-Dimensional ,Temporal bone ,Electrode array ,medicine ,Humans ,030223 otorhinolaryngology ,Child ,ComputingMilieux_MISCELLANEOUS ,Round window ,Ossicles ,business.industry ,medicine.disease ,Facial nerve ,Cochlear Implantation ,Sensory Systems ,Cochlea ,medicine.anatomical_structure ,Otorhinolaryngology ,Surgery, Computer-Assisted ,Neurology (clinical) ,Tomography ,Nuclear medicine ,business ,Tomography, X-Ray Computed ,030217 neurology & neurosurgery - Abstract
Objective The objective of this work was to study the feasibility of minimally invasive cochlear implantation under intraoperative computerized tomography-scan coupled to navigation. Materials and methods Five human resin temporal bones (two adults and three children) were used. Initially, a temporal bone imaging was obtained by the intraoperative CT-scan coupled to the navigation (O-ARM). The navigation-assisted drilling began at the mastoid surface creating a conical tunnel (4-2 mm in diameter) through the facial recess and down to the round window. A cochleostomy was performed based on the navigation. A sham electrode array was inserted in the drilled tunnel and into the cochlea.Postoperative CT-scan and dissection were performed to evaluate the trajectory, and possible injury to the external auditory canal, ossicles, or facial nerve. Results The mean duration of the procedure was 24.4 ± 3.79 minutes (range, 15-35). Cochleostomy was possible in all cases without injury to other structures. The sham array was inside the cochlea in all cases. The mean distance between the drilled canal and the mastoid portion of the facial nerve was 1.2 ± 0.07 mm (range, 1.08-1.38). The mean tracking error was 0.6 ± 0.26 mm (range, 0.20-0.72) at the entry point, 0.6 ± 0.33 mm (range, 0.2-1.02) at the facial nerve and 0.4 ± 0.07 mm (range, 0.36-0.51) at the cochleostomy. Conclusion Cochlear implantation through a minimally invasive approach assisted by intraoperative imaging combined with navigation was feasible in operating room environment and experimental conditions.
- Published
- 2020
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