Intraoperative Evaluation of Cochlear Implant Electrodes Using Mobile Cone-Beam Computed Tomography

Objective: To evaluate the electrode status during cochlear implantation (CI) using mobile cone-beam CT (mCBCT). Study Design: Retrospective case review. Setting: Tertiary referral hospital. Patients: Fifty-seven patients (7 bilateral surgeries, 64 ears) who underwent CI and who received intraoperative mCBCT imaging. Intervention: CI and CBCT during surgery. Main Outcome Measure: Electrode location and angular insertion depth determined by intraoperative mCBCT images. Results: There were six cases with cochlear malformation where intraoperative mCBCT was useful to confirm electrode location. Of 58 ears with a normal cochlear morphology, perimodiolar, straight, and mid-scalar electrodes were used in 30 (cochleostomy; 14 advance off-stylet technique cases), 27 (26 round w...

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