Related Experiment Video
Updated: Mar 16, 2026
Enhancing Electrode Location Assessment in Cochlear Implantation via Computed Tomography Image Fusion
Published on: January 17, 2025
Cone Beam CT Versus Multislice CT: Radiologic Diagnostic Agreement in the Postoperative Assessment of Cochlear
Victor Razafindranaly1, Eric Truy, Jean-Baptiste Pialat
1*Hospices Civils de Lyon, University Hospital Edouard Herriot, Lyon †Department of Otolaryngology, pavillon U ‡Department of Radiology, pavillon B §Cellule Recherche du PAM Imagerie ||Pôle Information Médicale Evaluation Recherche, Hospices Civils de Lyon, Lyon, France.
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.
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