ArticleEuropean radiology2021
Cochlear duct length and cochlear distance on preoperative CT: imaging markers for estimating insertion depth angle of cochlear implant electrode.
Article in European radiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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9 citing papers in PubMed, 13 citations in OpenAlex.
- Automatic cochlear morphometry: intraindividual comparison of head CT vs carotid CT angiography, cervical spine, and paranasal sinus CT.European radiology · 2026Article
- Effectiveness of the nucleus SmartNav system in detecting and preventing electrode tip fold-overs: a multi-centre retrospective analysis of 213 cochlear implantations.The Journal of laryngology and otology · 2026Article
- Evaluation of S-Value in relation to cochlear anatomy in pediatric cochlear implant users.Scientific reports · 2026Article
- Estimation of Angular Insertion Depth of a Cochlear Implant Electrode Array: Three-Dimensional Reconstruction Versus Spiral Formulae.Clinical and experimental otorhinolaryngology · 2025Article
- Predictive Value of 3D Radiological Segmentation and Anatomical Parameters for Cochlear Implantation Electrode Insertion Depth Based on a Large Sample of Patients with Inner Ear Malformations.Journal of otology · 2025Article
- Three-dimensional examination of cochlear dimensions in children up to 18 years.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2025Article
- Anatomical investigation of safety determining factors for keyhole drilling trajectories for robotic cochlear implant surgery.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2025Article
- CT imaging-based approaches to cochlear duct length estimation-a human temporal bone study.European radiology · 2022Article
- Measuring the cochlea and cochlear implant electrode depth.European radiology · 2021Article
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Authors and funding
9 authors at 2 institutions in 2 countries.
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No grant is acknowledged in the PubMed record.
Abstract
objectivesPreoperative estimation of the insertion depth angle of cochlear implant (CI) electrodes is essential for surgical planning. The purpose of this study was to determine the cochlear size using preoperative CT and to investigate the correlation between cochlear size and insertion depth angle in morphologically normal cochlea.
methodsThirty-five children who underwent CI were included in this study. Cochlear duct length (CDL) and the diameter of the cochlear basal turn (distance A/B) on preoperative CT and the insertion depth angle of the CI electrode on postoperative radiographs were independently measured by two readers. Correlation between cochlear size and insertion depth angle was evaluated. Interobserver agreement was calculated using the intraclass correlation coefficient (ICC).
resultsThe mean CDL, distance A, and distance B of 70 ears were 36.20 ± 1.57 mm, 8.67 ± 0.42 mm, and 5.73 ± 0.32 mm, respectively. The mean insertion depth angle was 431.45 ± 38.42°. Interobserver agreements of CDL, distance A/B, and insertion depth angle were fair to excellent (ICC 0.864, 0.862, 0.529, and 0.958, respectively). Distance A (r = - 0.7643) and distance B (r = - 0.7118) showed a negative correlation with insertion depth angle, respectively (p < 0.0001). However, the correlation between CDL and insertion depth angle was not statistically significant (r = - 0.2333, p > 0.05).
conclusionsThe CDL and cochlear distance can be reliably obtained from preoperative CT. Distance A can be used as a predictive marker for estimating insertion depth angle during CI surgery.
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