结论：CT不仅能诊断腰椎退变性滑脱症，而且还能显示硬膜囊和神经根的改变。
Conclusion: CT can not only diagnose lumbar degenerative spondylolisthesis but also show the changes of dural sacs and nerve roots.
目的：探讨腰椎退变性滑脱症的CT诊断依据和对硬膜囊、神经根的影响。
Purpose: To explore the bases of CT diagnosis for lumbar degenerative spondylolisthesis and the changes of dural sacs and nerve roots.
方法回顾性分析41例腰椎退变性滑脱症（前滑脱35例，后滑脱6例）的CT表现。
Methods Retrospective studies were made on 41 cases of lumbar degenerative spondylolisthesis (35 cases with anterior displacement, 6 with posterior displacement ) to explore their CT findings.
方法回顾性分析41例腰椎退变性滑脱症（前滑脱35例，后滑脱6例）的CT表现。
Methods Retrospective studies were made on 41 cases of lumbar degenerative spondylolisthesis (35 cases with anterior displacement, 6 with posterior displacement ) to explore their CT findings.
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