评估一个细的周边极极电极阵列的插入质量
R Beck1, A Aschendorff1, S Arndt1
1Faculty of Medicine, Department of Otorhinolaryngology, Medical Center - University of Freiburg, University of Freiburg, Freiburg, Germany.
概括
细模极电极阵列 (SMA) 在耳植入器手术中具有较低的2.7%的脱位率. 建议进行手术内X射线成像,以检测尖端折叠,并确保正确的电极放置.
科学领域:
- 耳鼻喉科 耳鼻喉科 耳鼻喉科
- 神经外科 神经外科
- 生物医学工程 生物医学工程
背景情况:
- 在耳植入物 (CI) 手术中,标尺位置和脱位率至关重要.
- 了解耳形态和电极阵列设计的影响对于成功的植入至关重要.
研究的目的:
- 为了评估一个新的薄周边极极电极阵列 (SMA) 的标量位置和位移率.
- 评估耳形态对电极阵列放置的影响,并确定特定的脱位点.
主要方法:
- 追溯分析81个耳朵植入了SMA.
- 术后形束计算断层扫描 (CBCT) 用于标尺位置评估.
- 评估耳形态,插入深度,角度和电极阵列设计.
主要成果:
- 该 SMA 显示了2.7%的低标尺位移率.
- 检测出三例手术时头部翻转 (3.7%),并进行了修订.
- 耳形态没有显著影响插入深度或标尺位置.
结论:
- SMA 的纤细设计有助于实现低位移率.
- 对于处理SMA存在学习曲线,强调需要进行手术内成像 (X射线) 和测量.
- 确定了与电极阵列设计相关的特定位移点.
相关概念视频
01:13Mass Analyzers: Overview
The mass analyzer is a crucial component of the mass spectrometer. In the ionization chamber, the vaporized sample is bombarded with a high-energy electron beam to generate a radical cation and further fragment into neutral molecules, radicals, and cations. A series of negatively charged accelerator plates accelerate the cations into the mass analyzer. The mass analyzer separates ions according to their mass-to-charge (m/z) ratios and then directs them to the detector. The common types of mass...
01:19Mass Analyzers: Common Types
The quadrupole mass analyzer consists of four cylindrical metal rods arranged in a diamond carrying a DC voltage and a radio-frequency AC voltage. The motion of ions through the quadrupole depends on the field strength, causing only ions of a certain m/z to resonate successfully and strike the detector at a given field strength. Though the transmission rate for these analyzers is high, the exact elemental composition of the sample is not determined because of low resolution; however, they are...