Mangado N, Ceresa M, Benav H, Mistrik P, Piella G, González Ballester MA. Towards a Complete In Silico Assessment of the Outcome of Cochlear Implantation Surgery. Mol Neurobiol (2017)
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Mangado N, Ceresa M, Benav H, Mistrik P, Piella G, González Ballester MA. Towards a Complete In Silico Assessment of the Outcome of Cochlear Implantation Surgery. Mol Neurobiol (2017)
Mangado N, Ceresa M, Benav H, Mistrik P, Piella G, González Ballester MA. Towards a Complete In Silico Assessment of the Outcome of Cochlear Implantation Surgery. Mol Neurobiol (2017)
Cochlear implantation (CI) surgery is a very successful technique, performed on more than 300,000 people worldwide. However, since the challenge resides in obtaining an accurate surgical planning, computational models are considered to provide such accurate tools. They allow us to plan and simulate beforehand surgical procedures in order to maximally optimize surgery outcomes, and consequently provide valuable information to guide pre-operative decisions. The aim of this work is to develop and validate computational tools to completely assess the patient-specific functional outcome of the CI surgery. A complete automatic framework was developed to create and assess computationally CI models, focusing on the neural response of the auditory nerve fibers (ANF) induced by the electrical stimulation of the implant. The framework was applied to evaluate the effects of ANF degeneration and electrode intra-cochlear position on nerve activation. Results indicate that the intra-cochlear positioning of the electrode has a strong effect on the global performance of the CI. Lateral insertion provides better neural responses in case of peripheral process degeneration, and it is recommended, together with optimized intensity levels, in order to preserve the internal structures. Overall, the developed automatic framework provides an insight into the global performance of the implant in a patient-specific way. This enables to further optimize the functional performance and helps to select the best CI configuration and treatment strategy for a given patient.
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