Cone Beam CT Versus Multislice CT: Radiologic Diagnostic Agreement in the Postoperative Assessment of Cochlear Implantation. Issue 9 (October 2016)

• Record Type: Journal Article
• Authors: Razafindranaly, Victor; Truy, Eric; Pialat, Jean-Baptiste; Martinon, Amanda; Bourhis, Magali; Boublay, Nawele; Faure, Frédéric; Ltaïef-Boudrigua, Aïcha
• Is Part Of: Otology & neurotology. Volume 37:Issue 9(2016)
• Publication Date: 2016-10
• Subjects: Cochlear implant -- Cone beam computed tomography -- Digital volume tomography -- Flat panel computed tomography -- Multislice computed tomography -- Scalar localization; Otology -- Periodicals; Ear -- Diseases -- Periodicals; Skull base -- Surgery -- Periodicals; 617.8005
• DOI: 10.1097/MAO.0000000000001165
• Languages: English
• ISSNs: 1531-7129

Abstract

Abstract : Objective: To evaluate the diagnostic concordance between multislice computed tomography (MSCT) and cone beam computed tomography (CBCT) in the early postoperative assessment of patients after cochlear implantation. Study Design: Prospective, randomized, single-center, interventional, pilot study on the diagnostic performance of a medical device. Setting: Tertiary referral center. Patients: Patients aged over 18 years requiring a computed tomographic (CT) scan after cochlear implant surgery. Interventions: Nine patients were implanted with electrode arrays from three different manufacturers, including one bilateral. High-resolution MSCT and CBCT were then performed, and two experienced radiologists blinded to the imaging modality evaluated the randomized images, twice. Main Outcome Measures: Concordance between MSCT and CBCT for assessing the scalar position (tympani or vestibuli) of the electrodes. Secondary outcome measures were also studied: length of the intracochlear electrode array, percentage of implanted cochlea, number of intracochlear electrodes, and radiation doses. Results: There was a good agreement between both CT scanners in determining the scalar position and estimating the number of implanted electrodes and percentage of implanted cochlea. CBCT had a lower radiation exposure. Conclusions: The CBCT appears to be a useful tool for postoperative assessment of cochlear implanted adult patients and is comparable to the conventional scanner in determining the scalar position, with lower radiation exposure. Abstract : Supplemental Digital Content is available in the text