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目的对比X线、CT和磁共振成像(MRI)在早期强直性脊柱炎(AS)骶髂关节病变诊断中的应用价值。方法 57例AS患者分别进行X线、CT和MRI检查,并对检查结果进行对比分析。结果 X线检测关节面侵蚀、关节面下骨质囊变、关节软骨肿胀检出率分别为59.65%、24.56%、0;CT检测分别为71.93%、57.89%、7.02%;MRI分别为82.46%、73.68%、12.28%。CT与MRI对关节面侵蚀、关节面下骨质囊变、关节软骨肿胀的检出率均明显高于X线平片,差异具有统计学意义(P<0.05);CT与MRI在0~Ⅱ级早期病变患者的检出率明显高于X线,差异具有统计学意义(P<0.05);在Ⅲ、Ⅳ级早期病变检出率比较差异无统计学意义(P>0.05)。结论 X线、CT和MRI在早期AS骶髂关节病变的诊断中均具有一定价值,其中MRI检出率明显优于其他两种检测手段。
Objective To compare the value of X-ray, CT and magnetic resonance imaging (MRI) in the diagnosis of sacroiliac joint disease in ankylosing spondylitis (AS). Methods Fifty-seven patients with AS were examined by X-ray, CT and MRI, respectively, and the results were compared. Results The detection rates of articular surface erosion, articular surface cystic degeneration and articular cartilage swelling were 59.65%, 24.56%, 0 respectively. The detection rates of CT were 71.93%, 57.89%, 7.02% respectively. The MRI findings were 82.46% , 73.68%, 12.28%. The detection rates of CT and MRI on articular surface erosion, articular surface osteoid changes and articular cartilage swelling were significantly higher than those on X-ray film (P <0.05) (P <0.05). There was no significant difference in the detection rate of grade Ⅲ and Ⅳ early lesions (P> 0.05) .Conclusion: The detection rate of early stage lesion is higher than that of X-ray, the difference has statistical significance (P <0.05). Conclusion X-ray, CT and MRI have some value in the diagnosis of early AS sacroiliac joint disease. The MRI detection rate is obviously superior to the other two detection methods.