【摘要】 目的 探讨CT在腰椎椎弓峡部不连诊断中的临床价值及提高检出率。 方法 用PICKER-1200CT机检查，总结56例不伴有明显椎体移位的腰椎椎弓峡部不连患者CT征象，并结合定位像进行分析。 结果 腰椎椎弓峡部不连的特征性表现是椎弓骨性环连续性中断。在CT诊断明确的腰椎椎弓峡部不连的病例中，37例在侧位定位像上，同一腰椎上、下小关节突间出现骨质不连续，19例局部骨质结构紊乱、增粗。 结论 常规CT检查腰椎间盘病变时，在不伴有明显椎体移位的情况下，如果定位像上腰椎椎弓部上、下小关节突间出现骨质不连续，类似椎体“断尾征”，以及局部骨质结构紊乱、增粗时增加扫描范围，对腰椎弓峡部不连的早期诊断有一定意义。

    关键词 腰椎椎弓峡部不连 腰椎定位像 计算机断层摄影

    The clinical application of computed tomography in spondylolysis of lumbar spine

    Zeng Dezhi，Xiao Ping，Pei Furong

    Xinhua Hospital，Guangzhou510800.

    【Abstract】 Objective To evaluate diagnostic value of CT in spondylolysis of lumbar spine and to improve its positive ratio.Methods 56cases of spondylolysis of lumbar spine which did not accompany overt dislocation were performed with PICKER-1200CT.The authors summarized their CT characteristics and analysed them combining to the topography.Results The characteristic performance that the spondylolysis of lumbar spine was the bone wreath consecution to break off.In CT diagnosis that the explicit spondylolysis of lumbar spine ......