Cartwright Michael S, Baute Vanessa, Caress James B, Walker Francis O
Department of Neurology, Wake Forest School of Medicine, Medical Center Blvd, Winston-Salem, NC, USA, 27157.
Muscle Nerve. 2017 Oct;56(4):819-822. doi: 10.1002/mus.25617. Epub 2017 Mar 21.
An ultrahigh-frequency (70 MHZ) ultrasound device has recently been approved for human use. This study seeks to determine whether this device facilitates counting of fascicles within the median nerve at the wrist.
Twenty healthy volunteers underwent imaging of the median nerve at the wrist bilaterally. The number of fascicles in each nerve was counted by two independent raters.
The mean fascicle number was 22.68. Correlation was strong between the two raters (r = 0.68, P < 0.001). Age, sex, body mass index, and nerve area did not predict fascicle number. Those with bifid median nerves and persistent median arteries had lower fascicle density than those without anatomic anomalies (1.79 vs. 2.29; P = 0.01).
Fascicles within the median nerve at the wrist can be readily imaged. Ultrahigh-frequency ultrasound technology may be informative in a variety of disorders affecting the peripheral nervous system. Muscle Nerve 56: 819-822, 2017.
一种超高频（70兆赫）超声设备最近已被批准用于人体。本研究旨在确定该设备是否有助于计数腕部正中神经内的束状结构。
20名健康志愿者双侧腕部正中神经接受成像。两名独立评估者对每条神经中的束状结构数量进行计数。
束状结构的平均数量为22.68。两名评估者之间的相关性很强（r = 0.68，P < 0.001）。年龄、性别、体重指数和神经面积不能预测束状结构数量。有正中神经分支和正中动脉持续存在的人，其束状结构密度低于无解剖异常者（1.79对2.29；P = 0.01）。
腕部正中神经内的束状结构能够很容易地成像。超高频超声技术可能对多种影响周围神经系统的疾病具有诊断价值。《肌肉与神经》56: 819 - 822, 2017年。
