Heinz E R, Yeates A, Burger P, Drayer B P, Osborne D, Hill R
AJNR Am J Neuroradiol. 1984 Sep-Oct;5(5):621-4.
Thin-section computed tomography (CT) after bolus high-volume, intravenous contrast enhancement of the cervical epidural and intervertebral foraminal venous plexus was undertaken in eight patients. Visualization of exiting cervical nerve root by opacification of the surrounding intervertebral plexus was evaluated in 38 foramina. Visualization was judged as excellent in 77% and good in 21%. Thus the nerves were seen satisfactorily in all but one foramen. As the CT scan parallels the long axis of the cervical roots as they pass through the intervertebral foramen, anatomic delineation of the root out to the level of the vertebral artery is excellent. A local widening of the root, which was thought to represent the dorsal root ganglion, was seen in most foramina examined. Excellent filling of the epidural plexus was seen in seven of eight subjects; good opacification was seen in the other subject. In no instance did the study fail to satisfactorily fill the epidural plexus in the cervical vertebral canal. This technique appears to be an excellent method for evaluating the cervical nerve roots and the epidural space.
对8例患者进行了大剂量静脉注射造影剂后颈椎硬膜外和椎间孔静脉丛的薄层计算机断层扫描（CT）。在38个椎间孔中评估了通过周围椎间静脉丛造影对穿出的颈神经根的显影情况。77%的显影情况被判定为优秀，21%为良好。因此，除了一个椎间孔外，所有椎间孔中的神经都能得到满意的显影。由于CT扫描与颈神经根穿过椎间孔时的长轴平行，因此对神经根直至椎动脉水平的解剖结构显示极佳。在大多数检查的椎间孔中都可见到神经根局部增宽，这被认为代表背根神经节。8例受试者中有7例硬膜外静脉丛显影极佳；另一例显影良好。在任何情况下，该研究均未出现颈椎管内硬膜外静脉丛显影不满意的情况。这项技术似乎是评估颈神经根和硬膜外间隙的极佳方法。
