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Congress: ECR25
Poster Number: C-14849
Type: Poster: EPOS Radiologist (educational)
Authorblock: A. Alec1, N-C. Balica2, A-M. Ungureanu2; 1Timișoara/RO, 2Timisoara/RO
Disclosures:
Anamaria Alec: Nothing to disclose
Nicolae-Constantin Balica: Nothing to disclose
Ana-Maria Ungureanu: Nothing to disclose
Keywords: Ear / Nose / Throat, CT-High Resolution, Education, Observer performance, Structured reporting, Education and training
Learning objectives Imaging in cochlear implant surgery planning is a fundamental component, and we, as radiologists, play an essential role in guiding our surgeon colleagues. This paper intends to highlight subtle conformational abnormalities or anatomic elements of a seemingly normal temporal bone on high-resolution computed tomography (HRCT) scans that are typically overlooked yet are crucial for proper surgical planning in the case of cochlear implantation.
Read more Background A cochlear implant (CI) is a surgically inserted device that is used for the auditory rehabilitation of adults and children with severe sensorineural hearing loss (SNHL) and/or inadequate speech discrimination who obtain minimal to no benefit from conventional hearing aids [1]. A CI device turns acoustic waves into electric energy, and an intracochlear-placed electrode directly stimulates the spiral ganglion viable cells of the auditory nerve, bypassing the impaired organ of Corti hair cells [2].The surgical procedure for a cochlear implant...
Read more Findings and procedure details This paper outlines the identification and accurate measurement of the essential anatomic elements of the temporal bone on a preoperative HRCT, which our report should include to facilitate the cochlear implantation procedure. Facial recess (FR) width: measured in the axial plane: perpendicular to a line that runs from the posterior wall of the external auditory canal (EAC) to the anterolateral aspect of the facial nerve (FN); normal width: if the distance between the EAC and the facial nerve exceeds 3 mm; a narrow facial...
Read more Conclusion In the evaluation of cochlear implant candidates, the preoperative assessment must include not only the pathological alterations responsible for hearing loss or any congenital ear anomalies but also have to point out specific anatomical features of the temporal bone that may not typically require particular attention in other cases. This is essential to prevent serious intraoperative complications, assist surgeons in surgical planning, and possibly reevaluate the surgical approach technique.
Read more References Deep, N.; Dowling, E.; Jethanamest, D.; Carlson, M. Cochlear Implantation: An Overview. J Neurol Surg B 2019, 80, 169–177, doi:10.1055/s-0038-1669411. Hiremath, S.B.; Biswas, A.; Mndebele, G.; Schramm, D.; Ertl-Wagner, B.B.; Blaser, S.I.; Chakraborty, S. Cochlear Implantation: Systematic Approach to Preoperative Radiologic Evaluation. RadioGraphics 2023, 43, e220102, doi:10.1148/rg.220102. Kashio, A.; Sakamoto, T.; Karino, S.; Kakigi, A.; Iwasaki, S.; Yamasoba, T. Predicting Round Window Niche Visibility via the Facial Recess Using High-Resolution Computed Tomography. Otology & Neurotology 2015, 36, e18–e23, doi:10.1097/MAO.0000000000000644. Behairy, E.A.W.; Hamad, M.H.;...
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