【摘要】 目的 评价CT扫描与X线平片对早期强直性脊柱炎的诊断价值。 方法 回顾性分析33例临床确诊的强直性脊柱炎骶髂关节X线平片、CT片和复查片，通过影像表现进行病变分期及统计学分析。 结果 早期强直性脊柱炎骶髂关节病变的影像表现为:髂骨侧关节面模糊，皮质部分完全消失，靠近皮质部的松质骨增生硬化糜烂、密度不均呈融雪状，骨小梁模糊，随病程延长可向骶骨侧与韧带部发展，关节内软组织肿胀等。CT扫描与X线平片对早期病变(Ⅰ～Ⅱ期)的检出差异有显著性(P<0.05)，对Ⅲ～Ⅳ期病变检出差异无显著性(P>0.05)。 结论 对早期强直性脊柱炎病例，骶髂关节的CT扫描较X线平片能更好地显示局部细微病变情况，对病变早期发现与分期更准确，应作为首选检查方法;CT复查对拟诊Ⅰ期病例的确诊、了解病变的演变情况和评价治疗效果有重要意义。

    关键词 骶髂关节 脊柱炎 强直性 计算机断层摄影

    Diagnosis of CT scan and X-ray film with the early ankylosing sacroiliac

    Ma Jin，Yan Xiuming，Hu Jiumin，et al.

    Department of Radiology，Affiliated Peoples Hospital of Yunyang Medical College，Shiyan442000.

    【Abstract】 Objective To evaluate the effect of CT scan and X-ray films used in the diagnosis of sacroiliac joint in the early ankylosing sacroiliac(AS).Methods By reviewing the X-ray films，CT scan and reexamination of33cases of the ankylosing spondylitis sacroiliac joints，we put the lesions into various staging by imaging manifesta-tions.All the data were studied by statistics.Results The sacroiliac joint in the early ankylosing sacroiliac(AS)had the following imaging manifestations:the cortex of the joint surface at the ilium side was hazzy ......