臂丛神经的超声影像学研究

目的 采用高频超声观察国人不同位置臂丛神经的正常形态。方法 采用高频超声对11例健康志愿者行右侧臂丛神经检查，并用神经刺激针确认。在臂丛神经通路上缓慢移动超声探头或改变方向，以检查神经的连续性，获得最佳的臂丛神经纵面图和横断面图。所有臂丛神经声像图特征、解剖的变化、进针和神经定位均被记录。结果 11例健康志愿者臂丛神经均能清楚显示，在超声引导下行电刺激均被证实为神经组织。臂丛神经在横断面上表现为圆形或椭圆形的低回声结构，内部由点状回声组成，纵面上表现为线性较强回声结构。结论 高频超声能提供高质量的臂丛神经声像图。

Ultrasonographic investigation of the brachial plexus

Objective To observe the images of the bmchial plexus in different positions by using high resolution sonography. Methods Examination of the right brachial plexus was done in 11 volunteers using high resolution sonography. The imaging was guided with stimulation by a nerve stimulator. By moving the transducer slowly along the course of the brachial plexus, successions of the brachial plexus and its optimal longitudinal plane and transverse plane were obtained. The image characteristics of the brachial plexus, its anatomic variations, advancement of needle and localization of the nerve were recorded. Results The brachial plexus were clearly visualized on ultrasound images of all 11 volunteers. The nerve structures were confirmed by electric stimulation. The brachial plexus were shown to be round or elliptic low echo structure in the transverse plane and linear high echo structure in the longitudinal plane. Condusion High resolution sonography can provide good quality ultrasound images of the brachial plexus.