利用手持式电极阵列进行局部肌肉阻抗测量。
Utilizing a handheld electrode array for localized muscle impedance measurements.
机构信息
Departments of Neurology and Orthopedics, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, Massachusetts 02215, USA.
出版信息
Muscle Nerve. 2012 Aug;46(2):257-63. doi: 10.1002/mus.23307.
INTRODUCTION
Electrical impedance myography (EIM) is a noninvasive technique used for assessment of muscle health in which a high-frequency, low-amplitude electric current is applied to the skin overlying a muscle, and the resulting surface voltage is measured. We have previously used adhesive electrodes, application of which is inconvenient. We present data using a handheld electrode array (HEA) that we devised to expedite the EIM procedure in a clinical setting.
METHODS
Thirty-four healthy volunteers and 24 radiculopathy subjects underwent EIM testing using the HEA and adhesive electrodes.
RESULTS
The HEA was shown to have good test-retest reproducibility, with intraclass correlation coefficients as high as 0.99. HEA data correlated strongly with data from adhesive electrodes, ρ = 0.85 in healthy volunteers (P < 0.001) and ρ = 0.75 in radiculopathy subjects (P < 0.001).
CONCLUSIONS
These data support the potential use of a handheld array for performing rapid localized surface impedance measurements.
简介
电阻抗肌描记法（EIM）是一种用于评估肌肉健康的非侵入性技术，它在肌肉表面施加高频、低幅度的电流，并测量产生的表面电压。我们之前使用的是粘性电极，使用起来不太方便。我们使用一种手持式电极阵列（HEA）来呈现数据，该阵列是为了在临床环境中加速 EIM 程序而设计的。
方法
34 名健康志愿者和 24 名神经根病变患者使用 HEA 和粘性电极进行 EIM 测试。
结果
HEA 具有良好的测试-再测试可重复性，其组内相关系数高达 0.99。HEA 数据与粘性电极数据相关性很强，在健康志愿者中 ρ = 0.85（P < 0.001），在神经根病变患者中 ρ = 0.75（P < 0.001）。
结论
这些数据支持使用手持式阵列进行快速局部表面阻抗测量的潜力。
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