背景技术人工耳蜗植入手术是受颞骨解剖结构影响的复杂手术。使用CT和MRI的术前成像可以提供对可能遇到的手术挑战的关键见解。本研究旨在评估CT和MRI在术前评估中的作用,以从手术时间上预测人工耳蜗植入手术的难度。材料与方法在Saveetha医学院和医院进行了回顾性观察研究,钦奈,从2022年4月到2023年9月。包括90例接受人工耳蜗植入的严重至深度感音神经性听力损失患者。术前进行颞骨高分辨率CT(HRCT)和MRI检查以评估各种解剖参数。术中评估手术难度,并与术前影像学检查结果相关。使用IBMSPSSStatisticsforWindows分析数据,V.21.0(IBM公司,Armonk,NY).结果研究对象平均年龄为7.4±10.9岁,大多数(66.7%)在1-5岁年龄组。在90名参与者中,男性50人,女性40人。HRCT和MRI显示,35.6%的参与者患有低度/非气腹乳突,3.3%的人面部凹陷狭窄,3.3%的人患有高骑颈静脉球茎。发现手术时间与颞骨的先天性(p=0.006)和获得性(p=0.0001)异常之间存在显着相关性,以及总难度得分(p=0.0001)。平均手术时间103.97±25.2分钟,范围从45到220分钟。结论术前HRCT和MRI是预测人工耳蜗植入手术难易程度的重要工具。影像学研究中确定的特定解剖特征可以显着影响手术方法和持续时间。这些发现强调了详细的术前成像对于增强人工耳蜗植入手术的手术计划和结果的重要性。
Background Cochlear implant surgery is a complex procedure influenced by the anatomical structures of the temporal bone. Preoperative imaging using CT and MRI can provide critical insights into the surgical challenges that may be encountered. This study aims to evaluate the role of CT and MRI in preoperative assessment to predict the difficulty of cochlear implant surgery in terms of surgical time. Materials and methods A retrospective observational study was conducted at Saveetha Medical College and Hospital, Chennai, from April 2022 to September 2023. Ninety patients with severe to profound sensorineural hearing loss who underwent cochlear implantation were included. Preoperative high-resolution CT (HRCT) and MRI of the temporal bone were performed to assess various anatomical parameters. Surgical difficulty was evaluated intraoperatively and correlated with preoperative imaging findings. Data were analyzed using IBM SPSS Statistics for Windows, V. 21.0 (IBM Corp., Armonk, NY). Results The mean age of participants was 7.4±10.9 years, with the majority (66.7%) in the 1-5-year age group. Out of 90 participants, 50 were male and 40 were female. HRCT and MRI revealed that 35.6% of participants had hypo-/non-pneumatized mastoids, 3.3% had narrow facial recesses, and 3.3% had high-riding jugular bulbs. Significant correlations were found between surgical time and associated congenital (p=0.006) and acquired (p=0.0001) anomalies of the temporal bone, as well as the total difficulty score (p=0.0001). The mean surgical time was 103.97±25.2 minutes, with a range from 45 to 220 minutes. Conclusion Preoperative HRCT and MRI are valuable tools in predicting the degree of difficulty in cochlear implant surgery. Specific anatomical features identified in imaging studies can significantly influence the surgical approach and duration. These findings underscore the importance of detailed preoperative imaging to enhance surgical planning and outcomes in cochlear implant procedures.