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Patient-specific virtual insertion of electrode array for electrical simulation of cochlear implants

Abstract : Sensorineural hearing loss is becoming one the most common reasons of disability. Worldwide 278 million people (around 25% of people above 45 years) suffer from moderate to several hearing disorders. Cochlear implantation (CI) enables to convert sound to an electrical signal that directly stimulates the auditory nerves via the electrode array surgically placed. However, this technique is intrinsically patient-dependent and its range of outcomes is very broad. A major source of outcome variability resides in the electrode array insertion. It has been reported to be one of the most important steps in cochlear implant surgery. In this context, we propose a method for patient-specific virtual electrode insertion further used into a finite element electrical simulation, and consequently improving the planning of the surgical implantation. The anatomical parameters involved in the electrode insertion such as the curvature and the number of turns of the cochlea, make virtual insertion highly challenging. Moreover, the influence of the insertion parameters and the use of different manufactured electrode arrays increase the range of scenarios to be considered for the implantation of a given patient. To this end, the method we propose is fast, easily parameterizable and applicable to a wide range of anatomies and insertion configurations. Our method is novel for targeting automatic virtual electrode insertion. Also, it combines high-resolution imaging techniques and clinical data to be further used into a finite element study and predict implantation outcomes in humans.
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https://hal.inria.fr/hal-01213345
Contributor : Nicolas Duchateau <>
Submitted on : Monday, October 12, 2015 - 8:57:56 AM
Last modification on : Tuesday, November 17, 2020 - 3:11:13 AM
Long-term archiving on: : Wednesday, April 26, 2017 - 10:34:55 PM

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Nerea Mangado, Nicolas Duchateau, Mario Ceresa, Hans Martin Kjer, Sergio Vera, et al.. Patient-specific virtual insertion of electrode array for electrical simulation of cochlear implants. Computer Assisted Radiology and Surgery (CARS), 2015, Barcelona, Spain. pp.S102-S103, ⟨10.1007/s11548-015-1213-2⟩. ⟨hal-01213345⟩

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