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Congress: ECR25
Poster Number: C-23107
Type: Poster: EPOS Radiologist (educational)
DOI: 10.26044/ecr2025/C-23107
Authorblock: S. El Mahfoudi, M. A. Mansar, D. Kamal, A. Orgi, A. Merzem, H. Belgadir, O. Amriss, N. Moussali, N. Elbenna; CASABLANCA/MA
Disclosures:
Salwa El Mahfoudi: Nothing to disclose
Mohamed Ali Mansar: Nothing to disclose
Douaa Kamal: Nothing to disclose
Anas Orgi: Nothing to disclose
Aicha Merzem: Nothing to disclose
Hassna Belgadir: Nothing to disclose
Omar Amriss: Nothing to disclose
Nadia Moussali: Nothing to disclose
Naima Elbenna: Nothing to disclose
Keywords: Ear / Nose / Throat, Head and neck, CT, eLearning, Education and training
Learning objectives To demonstrate the contribution of CT imaging of the temporal bones in the pre-implant assessment. To outline all the useful information for surgeons regarding cochlear implant placement. To establish a standardized report for this indication.
Read more Background The assessment of the temporal bones through CT imaging is essential in the evaluation of patients for cochlear implantation. Variations in anatomy, such as the size and shape of the cochlea, the presence of inner ear anomalies, and the status of the mastoid air cells, can significantly influence surgical outcomes. Understanding these anatomical features is crucial for surgical planning and maximizing the effectiveness of the cochlear implant.Results or FindingsThis review will discuss key imaging findings from CT scans of the...
Read more Findings and procedure details I - COCHLEAR IMPLANT :A- General Information :A device enabling the transduction of sound energy into a coded electrical signal transmitted to the spiral ganglia, bypassing pathological cochlear cells. It consists of two parts (Figure 1):    An external part containing:      - A microphone placed behind the ear.      - A speech processor: encoding electrical impulses.  An internal part containing (Figure 2):  The implant itself, or receiver, surgically placed in the mastoid opposite the coil.  The electrode bundle is inserted into...
Read more Conclusion This educational presentation aims to offer an iconographic review of the important anatomical considerations and imaging features from CT scans of the temporal bones that are vital for cochlear implant candidacy. By understanding these elements, radiologists can provide crucial information that enhances surgical planning and optimizes outcomes for patients undergoing cochlear implantation. The presentation will focus on key anatomical structures, including the cochlea, cochlear nerve, and semicircular canals, as well as identifying potential contraindications such as ossifications or anomalies that...
Read more References [1] Oh J, Cheon JE, Park J, Choi YH, Cho YJ, Lee S, Oh SH, Shin SM, Park SW. Cochlear duct length and cochlear distance on preoperative CT: imaging markers for estimating insertion depth angle of cochlear implant electrode. Eur Radiol. 2021 Mar;31(3):1260-1267. doi: 10.1007/s00330-020-07580-4. Epub 2021 Jan 20. PMID: 33471218.[2]  Gee AH, Zhao Y, Treece GM, Bance ML. Practicable assessment of cochlear size and shape from clinical CT images. Sci Rep. 2021 Feb 10;11(1):3448. doi: 10.1038/s41598-021-83059-6. PMID: 33568727; PMCID:...
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