Predicting Auditory Outcomes From Radiological Imaging in Cochlear Implant Patients With Cochlear Nerve Deficiency.

Objective: To compare imaging and outcome data in cochlear implant (CI) patients with and without cochlear nerve deficiency (CND). Study Design: Retrospective study comparing presurgical imaging (via high-resolution computed tomography and three-dimensional magnetic resonance imaging) to postsurgical auditory outcomes in CI patients with and without CND. Patients: Forty-three CI patients with CND diagnosed according to preoperative imaging were included in the CND group. A control group (non-CND; n = 43) was matched to the CND group in terms of age at implantation, CI device type, preoperative hearing threshold, and sex. Results: Across all subjects, internal auditory canal (IAC) diameter, cochlear nerve canal (CNC) diameter, and the number of nerve bundles were significantly correlated with all auditory outcome measures (p

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