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目的评价三者对强直性脊柱炎的诊断价值。方法回顾性分析30例强直性脊柱炎的患者行骶髂关节X线片、MRI以及CT影像资料。结果 MRI对早期关节病变的敏感性显著高于X线(P<0.05),可显示CT不能显示的关节旁软骨异常、骨髓内病变。MRI、CT均可将AS诊断提高Ⅰ~Ⅱ个级别。结论 X线作为常规检查的手段,经济,但显示率较低;CT对关节面骨质的侵蚀破坏、关节间隙内线样钙化较X线清晰;MRI能够显示X线、CT不能观察到的早期骨髓水肿、滑膜水肿等细微病变。三者结合能准确的反映早期强直性脊柱炎患者骶髂关节的改变,并对患者进行准确的分级。
Objective To evaluate the diagnostic value of the three in ankylosing spondylitis. Methods The data of sacroiliac joint X-ray, MRI and CT were retrospectively analyzed in 30 patients with ankylosing spondylitis. Results The sensitivity of MRI to early joint disease was significantly higher than that of X-ray (P <0.05). MRI showed abnormalities of para articular cartilage and intramedullary lesions. MRI and CT can improve AS diagnosis Ⅰ ~ Ⅱ level. Conclusions X-ray is economical, but the display rate is low. The erosive destruction of articular surface bone by CT and the linear calcification in joint space are more clear than X-ray. MRI can show the early bone marrow which can not be observed by X-ray and CT Edema, synovial edema and other minor lesions. Combination of the three can accurately reflect the early ankylosing spondylitis in patients with sacroiliac joint changes, and patients with accurate grading.