ObjectiveTo explore the application value of conebeam computerized tomography (CBCT) in postoperative imaging evaluation of intracochlear electrodes after cochlear implantation (CI) via analyzing detailed data such as insertion localization, depth, electrode number and visualization of the electrode array, obtained by CBCT and postprocessing techniques.Methods35 patients receiving CI in our hospital were included. Postoperative CBCT was performed to all the patients. Images were acquired from (VATECH) PaXUni3D high resolution CBCT with the tube voltage of 89 KV and the tube current of 4.0mA. The coronal and oblique sagittal multiplanar reconstruction (MPR) images vertical and parallel to the cochlear axis and 3dimensional images were reconstructed. The electrode number was counted, the depth of the electrode as well as its distance to the cochlear axis were measured, the position and definition of the electrode were evaluated.ResultsCBCT could clearly display the intracochlear electrode array with measuring the depth of electrode implanted and counting the number of electrodes. 766 implanted electrodes were detected in all the 35 patients, with an average of 21.88±2.17. The mean depth value of implanted electrode detected by CBCT was (19.37±1.96) mm, while that measured during operation was (19.31±2.03) mm, and their difference was statistically insignificant (P>0.05). Two doctors had good consistency in the evaluation of electrode definition (t=-0.502,P=0.619>0.05).ConclusionCBCT can display the location and depth of the implanted electrodes, count the number of implanted electrodes and measure the distance between the electrode and cochlear axis, therefore can be applied to the evaluation of the implanted electrodes after CI.