Volume 24 Issue 1
Jan.  2026
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Article Navigation >  Chinese Journal of General Practice  > 2026  >  24(1): 113-116
WU Lin, JIA Huihui, CHEN Mengmeng, GU Wei, WANG Aiping. Preoperative HRCT of temporal bone combined with inner ear MRI in patients with cochlear implantation[J]. Chinese Journal of General Practice, 2026, 24(1): 113-116. doi: 10.16766/j.cnki.issn.1674-4152.004342
Citation: WU Lin, JIA Huihui, CHEN Mengmeng, GU Wei, WANG Aiping. Preoperative HRCT of temporal bone combined with inner ear MRI in patients with cochlear implantation[J]. Chinese Journal of General Practice, 2026, 24(1): 113-116. doi: 10.16766/j.cnki.issn.1674-4152.004342
shu

Preoperative HRCT of temporal bone combined with inner ear MRI in patients with cochlear implantation

doi: 10.16766/j.cnki.issn.1674-4152.004342

  • Department of Radiology, Children' s Hospital Affiliated to Soochow University, Suzhou, Jiangsu 215000, China

Funds:

 BK20220734

  • Received Date: 2025-03-23
    Available Online: 2026-04-01
    Abstract
  •   Objective  To address the clinical difficulties of complex anatomical structure and high risk of electrode implantation in children with severe sensorineural deafness during cochlear implantation, and to explore the application value of a combined assessment using high-resolution temporal bone CT (HRCT) and multimodal inner ear MRI before surgery, thereby providing imaging evidence for optimizing surgical planning and reducing the risk of complications.  Methods  A total of 192 children (215 affected ears) with severe or profound sensorineural deafness who underwent surgical CI treatment at the Children' s Hospital Affiliated to Soochow University from January 2021 to December 2024 were selected. All patients underwent temporal bone HRCT and inner ear MRI examinations. The diagnostic efficacy of the two methods for detecting inner ear malformations and abnormal electrode implantation were compared. Univariate and Logistic regression analyses were used to analyze the risk factors associated with abnormal electrode implantation.  Results  Among the 192 cases (215 ears) of children, a total of 140 cases (159 ears) had inner ear developmental malformations, with some unilateral malformed ears presenting with multiple malformations. The detection rate of cochlear malformation identified by inner ear MRI was significantly lower than that by HRCT of the temporal bone (P < 0.05). Transtemporal bone HRCT combined with inner ear MRI examination identified abnormal electrode implantation in 29 ears. Among them, the abnormal implantation rate without inner ear deformity was 5.36% (3/56), which was significantly lower than that in ears with inner ear deformity (16.35%, 26/159, P < 0.05). Logistic multivariate regression analysis showed that increased width of vestibular aqueduct, loss of the labyrinthine segment of the facial nerve canal, greater endolymphatic cyst expansion, elevated intraoperative cerebrospinal fluid pressure level, and older patient age were independent risk factors for abnormal electrode implantation (P < 0.05).  Conclusion  Preoperative temporal bone HRCT combined with inner ear MRI can objectively depict the development and anatomical structure of the inner ear in children. Moreover, the width of vestibular aqueduct, the integrity of the labyrinthine segment of the facial nerve canal, the degree of the endolymphatic sac enlargement, and the intraoperative cerebrospinal fluid pressure are independent risk factors for abnormal electrode implantation.

     

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