磁共振成像在强直性脊柱炎早期骶髂关节炎患者诊断中的临床价值分析

Analysis of the Clinical Value of Magnetic Resonance Imaging in the Diagnosis of Early Sacroiliitis Patients with Ankylosing Spondylitis

摘要: 目的：骶髂关节炎为强直性脊柱炎早期病变，及时诊断对患者诊疗方案制定具有重要意义，本研究旨在探究磁共振成像在早期骶髂关节炎症中的诊断价值。方法：搜集2022年3月至2025年11月我院收治的100例疑似强直性脊柱炎骶髂关节炎患者开展研究，均接受CT及磁共振检查，金标准为临床综合诊断结果；对比分析两种影像学方法的差异。结果：临床综合诊断结果显示：94例确诊，阳性率94.00%；磁共振成像诊断：92例确诊，阳性率92.00%；CT诊断：76例确诊，阳性率76.00%。磁共振成像诊断阳性率与临床综合诊断结果相比较P > 0.05，差异无统计学意义；CT诊断阳性率与磁共振成像诊断阳性率、临床综合诊断结果相比较P < 0.05，差异有统计学意义。CT诊断与磁共振成像诊断在灵敏度、阴性预测值方面有显著差异，P < 0.05；两种检测方式在特异度、阳性预测值方面差异无统计学意义，P > 0.05。强直性脊柱炎病理分期诊断结果对比，磁共振成像与CT诊断率差异具有统计学意义，P < 0.05。结论：在疑似强直性脊柱炎早期骶髂关节炎患者诊断中，磁共振成像可以实现早期病变的发现，为患者临床诊疗方案的制定提供依据。

Abstract: Objective: Sacroiliitis is an early manifestation of ankylosing spondylitis. Timely diagnosis is crucial for developing appropriate treatment plans. This study aims to investigate the diagnostic value of Magnetic Resonance Imaging (MRI) in early sacroiliitis. Methods: A total of 100 patients with suspected ankylosing spondylitis-related sacroiliitis admitted to our hospital from March 2022 to November 2025 were enrolled in this study. All patients underwent CT and MRI examinations. The gold standard was the comprehensive clinical diagnostic result. The differences between the two imaging methods were comparatively analyzed. Results: The comprehensive clinical diagnostic result showed that 94 cases were diagnosed with a positive rate of 94.00%; MRI diagnosis: 92 cases were diagnosed with a positive rate of 92.00%; CT diagnosis: 76 cases were diagnosed with a positive rate of 76.00%. The positive rate of MRI diagnosis compared with the comprehensive clinical diagnostic results was P > 0.05, the difference was not statistically significant; the positive rate of CT diagnosis compared with the positive rate of MRI diagnosis and the comprehensive clinical diagnostic result was P < 0.05, the difference was statistically significant. CT diagnosis and MRI diagnosis have significant differences in sensitivity and negative predictive value, P < 0.05; the two detection methods have no statistically significant differences in specificity and positive predictive value, P > 0.05. Compared with the pathological diagnosis results of early sacroiliitis in ankylosing spondylitis, the difference in diagnosis rate between magnetic resonance imaging and CT was statistically significant, P < 0.05. Conclusion: In the diagnosis of early sacroiliitis in patients with suspected ankylosing spondylitis, Magnetic Resonance Imaging (MRI) can detect early lesions and provide evidence for developing clinical treatment plans.