目的 探究分析CT与MRI在强直 性脊柱炎骶髂关节病变临床诊断中的应 用价值。方法 随机选取我院2014年10 月-2015年10月期间收治的80例强直性脊 柱炎患者为研究对象，先后对其进行CT与 MRI检查，观察并分析两种检查方式的诊 断结果。结果 MRI对强直性脊柱炎骶髂关 节病变Ⅰ级、Ⅱ级的检出率均显著高于 CT(P<0.05)；MRI对强直性脊柱炎骶髂关 节病变关节面侵蚀、关节面下骨质囊变、 腰5骶1关节突病变、软组织肿胀的检出率 均显著高于CT(P<0.05)，但两种检查方法 对关节面增生硬化、关节间隙下增宽或变 窄、关节强直的检出率之间的差异均不显 著(P>0.05)。结论 MRI在强直性脊柱炎骶 髂关节病变临床诊断中的检出率较CT高， 具有良好的应用价值，值得临床推广应 用。

Objective To explore the application value of CT and MRI in the diagnosis of ankylosing spondylitis sacroiliac joint lesions. Methods Eighty cases of ankylosing spondylitis patients were randomly selected as the research object from October 2014 to October 2014, and all of them had successively CT and MRI examination, to observe and analyze the two inspection ways for this disease. Results The detection rate of MRI for sacroiliac joint lesionsⅠ, Ⅱ of ankylosing spondylitis were significantly higher than that of CT (P<0.05). The detection rate of MRI for ankylosing spondylitis sacroiliac joint lesions under the joint surface erosion, surface joints bone cystic change, waist 5 s1 joints lesions, soft tissue swelling were significantly higher than that of CT (P<0.05), but the detection rate of the two methods in checking hyperplasia of the articular surface hardening, broadening or narrowing, joint stiffness under the joint had not significant difference (P>0.05). Conclusion The detection rate of MRI in the diagnosis of ankylosing spondylitis sacroiliac joint lesions is higher than CT, which has good application value and is worthy of clinical popularization and application.