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[目的]探讨膝关节周围神经MSCT、MRI表现及解剖学特点。[方法]观察37例正常成年人膝关节周围神经在MSCT及磁共振图像上的表现,并对CT图像及磁共振3D-BRAVO T1WI图像在GE公司AW4.6工作站上进行多平面重组,取膝关节周围神经其同层显示层面,观察其影像学解剖特点。[结果]膝关节周围神经影像表现为索条样结构,内含脂肪组织。在MSCT图像与MRI测量并对比胫神经不同水平层面轴截面面积,二者无显著性差异。对照观察多平面重组图像与常规图像,测量胫神经与腓总神经单支显示最大长度、二者走行夹角及同层时神经长度,二者有显著性差异。主要神经走行方向、形态、粗细、张力及毗邻关系通过多平面重组同层能清晰显示。[结论]膝关节周围神经在MSCT与磁共振成像表现基本一致,其解剖特征能利用多平面重建同层理想地显示,3DBRAVO T1WI序列可以应用于外周神经的显示,为膝关节周围神经相关病变的影像学诊断奠定基础。
[Objective] To explore the features of MSCT, MRI and anatomy of the peripheral nerve of knee. [Methods] The peripheral nerve of knee in 37 normal adults was observed on MSCT and MR images. The CT images and magnetic resonance 3D-BRAVO T1WI images were multiplanar reorganized on GE AW4.6 workstation, Peri-articular nerves showed the same layer of its level, to observe the imaging anatomy. [Results] The images of the peripheral nerve of knee showed a cord-like structure containing adipose tissue. There was no significant difference between the MSCT images and MRI measurements and the comparison of axial cross-sectional areas at different levels of the tibial nerve. Controlled observation of multiplanar reconstructed images and conventional images, measurement of tibial nerve and common peroneal nerve showed the maximum length of the single branch, walking angle and the same length of nerve, the two significant differences. The main nerve running direction, shape, thickness, tension and the adjacent relationship through the multi-plane reorganization can be clearly displayed. [Conclusion] Peripheral nerves of knee are basically consistent with MR imaging. Their anatomical features can be ideally displayed by multiplanar reconstructions. The T1WI sequence of 3DBRAVO can be applied to the display of peripheral nerves. Imaging diagnosis laid the foundation.