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将线性和非线性模型进行比较,以估计适当的耳植入物电极阵列长度 - - 当前的方法是否足够精确?

Nora M Weiss1,2,3, Tabita Breitsprecher4, Martin Wozniak5

  • 1Department of Otorhinolaryngology-Head and Neck Surgery, Ruhr-University Bochum, St. Elisabeth-Hospital Bochum, Bochum, Germany. nora.weiss@rub.de.

European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery
|July 19, 2023
PubMed
概括

选择合适的耳植入物电极阵列对于听力结果至关重要. 对耳管长度的数学模型可能导致错误的阵列选择,影响语音感知.

关键词:
角度插入深度预测的预测插入角度 插入角度

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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:

  • 耳植入旨在达到70-80%的耳覆盖率 (CC),以实现最佳的语音感知.
  • 选择正确的耳植入物 (CI) 电极阵列长度对于实现目标CC至关重要.
  • 灵活的侧壁电极阵列通常用于耳植入.

研究的目的:

  • 以数学分析不同灵活的侧壁电极阵列长度的适用性,以达到70-80%的CC.
  • 调查线性和非线性模型对估计耳管长度 (CDL) 和随后的电极阵列选择的影响.

主要方法:

  • 120个手术前高分辨率计算机断层扫描 (HRCT) 的回顾性横截面研究.
  • 使用耳外科计划软件估计CDL.
  • 使用线性和非线性模型计算 70-80% CC 的 CI 电极阵列长度.

主要成果:

  • 在线性和非线性模型之间发现了CDL估计的显著差异 (p < 0.001).
  • 取决于模型的CC变化,70%CC的平均差异为2.5mm,80%CC的平均差异为1.5mm.
  • 在多达25%的患者中,没有现有的电极阵列适合所需的CC范围,并且在49.2%的病例中,模型在选择方面存在分歧.

结论:

  • 根据使用的CDL近似方法,耳覆盖率有很大差异.
  • 非线性模型可能会高估CC,可能导致选择太短的电极阵列.
  • 需要进一步的研究来验证CDL估计在耳植入器中不同数学模型的准确性.