Fig. 4.
Analysis of preoperative non-implanted and postoperative implanted ears (Group 2). Bar shows absolute mean values of measurements of CDLOC based on MSCT, fpVCT and fpVCTSECO (A). Bland–Altman plots were constructed to visualize discrepancies within the two test series of the various imaging settings and modalities (B–D). According to Koch et al. [7], a clinically acceptable deviation of ± 1.5 mm was assumed analyzing CDLOC. Notably, MSCT-measurements were done preoperatively without inserted electrode and fpVCT/ fpVCTSECO measurements postoperatively. Differences between the different cohorts are indicated as significant, ***p ≤ 0.001. MSCT: multislice computed tomography, fpVCT: flat-panel volume computed tomography, fpVCTSECO: fpVCT secondary reconstruction