Ultrasound-guided motor unit scanning electromyography.
Ultrasound-guided motor unit scanning electromyography.
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DOI：
10.1002/mus.27720
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发表时间：
2022-12
期刊：
影响因子：
3.4
通讯作者：
Whittaker, Roger
中科院分区：
文献类型：
--
作者：
Maitland, Stuart;Hall, Julie;McNeill, Andrew;Stenberg, Ben;Schofield, Ian;Whittaker, Roger
测量单个运动单元的空间尺寸仍然是一个具有挑战性的问题，而目前的技术，如扫描肌电图（EMG），往往低估了真实的尺寸。在这项研究中，我们的目的是通过开发一种临床适用的扫描肌电图方案，更准确地估计单个运动单元的尺寸，该方案利用超声成像来可视化和定位单个运动单元中心的横断面。健康志愿者的胫骨前肌的单个运动单元抽搐是通过刺激腓骨神经引起的，用超声观察，并用肌内肌电图电极定位。电极用手在运动单元区域内小步移动。超声视频输出与肌电图采集同步，每一步跟踪针的位置。收集了6名参与者的8段录音。该技术快速简便（平均时间6.1分钟），具有合理的空间分辨率（平均步长1.85 mm），产生的运动单元区域尺寸在1.53 ~ 14.65 mm（平均7.15 mm）之间。超声引导的运动单元扫描肌电图是一种快速准确的获得目标运动单元横断面的方法。这两种现成的临床工具的结合提供了对运动单元的尺寸和内部结构的见解，作为神经肌肉状况的标志。
Measuring the spatial dimensions of a single motor unit remains a challenging problem, and current techniques, such as scanning electromyography (EMG), tend to underestimate the true dimensions. In this study we aimed to estimate more accurately the dimensions of a single motor unit by developing a clinically applicable scanning EMG protocol that utilizes ultrasound imaging to visualize and target a transect through the center of a single motor unit. Single motor unit twitches in the tibialis anterior muscles of healthy volunteers were elicited via stimulation of the fibular nerve, visualized with ultrasound, and targeted with an intramuscular EMG electrode. The electrode was moved by hand in small steps through the motor unit territory. Ultrasound video output was synchronized to EMG capture, and the needle position was tracked at each step. Eight recordings from six participants were collected. The technique was quick and easy to perform (mean time, 6.1 minutes) with reasonable spatial resolution (mean step size, 1.85 mm), yielding motor unit territory sizes between 1.53 and 14.65 mm (mean, 7.15 mm). Ultrasound‐guided motor unit scanning EMG is a quick and accurate method for obtaining a targeted motor unit transect. This combination of two readily available clinical tools provides insights into the dimensions and internal structure of the motor unit as a marker for neuromuscular conditions.
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影响因子：
4.4
作者：
STALBERG, E;SCHWARTZ, MS;SCHILLER, HH
通讯作者：
SCHILLER, HH
影响因子：
5.1
作者：
Corera, Inigo;Malanda, Armando;Navallas, Javier
通讯作者：
Navallas, Javier
影响因子：
4.6
作者：
Rohlén R;Stålberg E;Grönlund C
通讯作者：
Grönlund C
影响因子：
4.7
作者：
Birkbeck, Matthew G.;Heskamp, Linda;Whittaker, Roger G.
通讯作者：
Whittaker, Roger G.
影响因子：
11
作者：
HILTONBROWN, P;STALBERG, E
通讯作者：
STALBERG, E