Departments of Neurology and Orthopedics, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, Massachusetts 02215, USA.
Muscle Nerve. 2012 Aug;46(2):257-63. doi: 10.1002/mus.23307.
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.
Thirty-four healthy volunteers and 24 radiculopathy subjects underwent EIM testing using the HEA and adhesive electrodes.
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).
These data support the potential use of a handheld array for performing rapid localized surface impedance measurements.
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。
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。
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）。
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。
