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耳植入物相对于尺度倾斜的电极方向的体内成像
Nicole T Jiam1, Luke Helpard2, Melanie L Gilbert1
1Department of Otolaryngology-Head and Neck Surgery, University of California-San Francisco School of Medicine, San Francisco, California, USA.
The Laryngoscope
|December 16, 2025
概括
灵活的耳植入器 (CI) 电极阵列适应着 tympani 的自然倾斜. 这项体内研究揭示了电极接触方向如何与耳结构保持一致,从而影响CI性能.
科学领域:
- 耳鼻喉科 耳鼻喉科 耳鼻喉科
- 生物医学工程 生物医学工程
- 医疗成像医学成像
背景情况:
- 耳植入物 (CI) 电极位置对于生物力学至关重要.
- 之前的研究评估了电极距离,但没有评估与耳倾斜相对的方向.
- 在体内调查电极灵活性和动态行为是必不可少的.
研究的目的:
- 在体内检查侧壁电极阵列的灵活性和动态行为.
- 分析电极接触方向及其与 tympani 的解剖倾斜的关系.
- 为了提供对电极-尾生物力学的见解.
主要方法:
- 八名MED-EL FLEX28 CI使用者的回顾性队列研究.
- 在体内平面电脑断层扫描 (FPCT) 成像.
- 使用3D染和解剖学地标分析电极接触方向和标尺倾斜.
主要成果:
- 在标尺倾斜和电极接触方向之间发现了显著的相关性 (r = -0.44,p < 0.0001).
- 标杆 tympani倾斜随着角深度而变化,在子区域最大.
- 电极阵列与180°至360°插入深度之间的梯度旋转对齐.
结论:
- 灵活的侧壁电极阵列符合 tympani 的自然解剖倾斜.
- 电极接触方向沿着插入路径与耳结构保持一致.
- 结果提供了关于CI生物力学,结构保存和刺激模式的见解.
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