目的 研究早期强直性脊柱炎 骶髂关节病变患者应用X线、CT及MRI诊 断的价值。方法 资料选取本院2015年5 月-2016年5月收治的早期强直性脊柱炎 103例骶髂关节病变患者予以回顾性地分 析，分别应用X线、CT及MRI检查，观察与 比较其诊断价值。结果 X线检查显示关节 间隙变宽，CT检查显示关节间隙变窄且 模糊，MRI检查显示关节积液呈现长T2、 T1；MRI0级强直性脊柱炎的检出率16.50% 均比X线、CT0.00%高，且MRI、CT于Ⅰ级 和Ⅱ级检出率31.07%和32.04%、30.10% 和30.10%均比X线7.77%和15.53%高，比 较差异均具有统计学意义(P＜0.05，P ＜0.01)；MRI关节面骨质囊变与关节面 侵蚀检出率85.44%与96.12%均分别比X线 34.95%与63.11%、CT67.96%与80.58%高， 比较差异均具有统计学意义(P＜0.01)。 结论 早期强直性脊柱炎骶髂关节病变患 者行X线、CT及MRI诊断均有一定应用价 值，且MRI在组织病变和强直性脊柱炎诊 断中具有更高检出率，临床需加以充分利 用，从而尽早确诊，并为疾病采取相应治 疗措施提供借鉴。

Objective To explore the value of X-ray, CT and MRI in the diagnosis of early ankylosing spondylitis in patients with sacroiliac joint disorder. Methods The clinical data of 103 patients with sacroiliac joint disorder in early ankylosing spondylitis who had received treatment in our hospital between May 2015 and May 2016 were retrospectively analyzed, which were given X-ray, CT and MRI for examination. The diagnostic values of these three methods were observed and compared. Results The X-ray examination showed that the joint space was widened, CT results showed a narrowing and ambiguous joint space and the MRI examination long T2 and long T1. The detection rate of MRI for the diagnosis of class 0 ankylosing spondylitis was shown to be at 16.50%, higher than that of X-ray and CT, which were both at 0. 00%. The detection rates of MRI and CT were class Ⅰ and class Ⅱ were respectively 31.07% and 32.04%, and 30.10% and 30.10%, both higher than the 7.77% and 15.53%, where the difference was statistically significant (P<0.05, P<0.01). The detection rates of MRI for sclerotin cystic of the articular surface and erosion of articular surface were respectively 85.44% and 96.12%, higher than that of X ray which was 34.95% and 63.11% respectively and than that of CT which was 67.96% and 80.58%, where statistically significant difference was registered (P<0.01). Conclusion For early ankylosing spondylitis in patients with sacroiliac joint disorders, X-ray, CT and MRI are all with certain diagnosis value, among which MRI boasts of higher detection rate in tissue lesions and diagnosis of ankylosing spondylitis, thus it is worthwhile to be utilized in clinical field to make sure early diagnosis and to provide reference for the treatment of this disease.