Radiologic Evidence of Cochlear Implant Bone Bed Formation Following the Subperiosteal Temporal Pocket Technique

ObjectiveTo compare the thicknesses of bone beneath the internal receiver stimulator (IRS) with the symmetric contralateral unimplanted side in postoperative temporal high-resolution computed tomography (CT) and/or cranial CT of the patients for whom cochlear implants were secured by the subperiosteal temporal pocket technique.Study DesignCase series with chart review.SettingTertiary care hospital, cochlear implant referral center.SubjectsCochlear-implanted pediatric patients with postoperative temporal high-resolution CT and/or cranial CT were reviewed. The study group included 10 patients with Clarion devices (Advanced Bionics, Valencia, California).MethodsThicknesses of bone were recorded independently by 2 radiologists in the standardized coordinates of proximal, middle, and distal segments of both the IRS bed and the contralateral unimplanted side in each patient. Bone thickness differences in the proximal, middle, and distal segments of IRS were investigated. Any correlation between bone thickness d...