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在经椎间盘中心平面的CT扫描图像上,对下腰段82个正常椎间盘(男49个,女33个)及相应平面后方之硬胶囊、椎管的矢径、横径和面积进行了测量,并用指数形式来表示前、后二者间各项指标的比例关系。通过与40个(男27个、女13个)膨出椎间盘的比较分析,发现硬膜囊面积/椎间盘面积、硬膜囊矢径/椎间盘矢径及椎管矢径/椎间盘矢径等三个指数在椎间盘膨出的诊断中最有价值。
In the CT scan images of the center of the disc, the mean, transverse diameter and area of the spinal canal of 82 normal intervertebral discs in lower lumbar region (49 males and 33 females) and hard capsule behind the corresponding plane were measured and used Exponential form to represent the former, the ratio between the two indicators. By comparison with 40 (27 males and 13 females) bulging intervertebral discs, we found three areas of dural sac area, intervertebral disc area, dural sac diameter / intervertebral disc radiograph, vertebral sagittal diameter / intervertebral disc radius Index in the diagnosis of disc herniation the most valuable.