磁共振成像在早期类风湿性关节炎诊断中的价值

目的 探讨MRI在早期类风湿性关节炎(rheumatoid arthritis, RA)诊断中的价值.方法 回顾性分析35例临床确诊早期RA患者的手腕关节X线和MRI图像.使用Philips Achieva 3.0 T磁共振扫描仪.结果 在35例初诊RA患者中,MRI表现包括滑膜增生和滑膜炎、腱鞘炎、关节积液、骨质侵蚀...

Value of MR imaging in early rheumatoid arthritis

Objective：To discuss the role of MR imaging in early rheumatoid arthritis （ERA）.Materials and Methods：The study group consisted of 35 patients diagnosed ERA.All the conventional X-ray and MRI images of wrists and fingers were reviewed.All the MRI examinations were performed on a Philips Achieva 3.0 T sacanner.Results：Abnormalities in 35 ERA patients included synovitis,tenosynovitis,joint effusion,bone marrow edema and bone erosions.MRI revealed synovitis in 33 of 35 （94.3%）,showing thickened synovium and obvious enhancement after the administration of gadolinium.Tenosynovitis was shown as thickened synovium around the tendon or effusion under the synovial sheath.The extensor carpi ulnaris was the most involved in 20 of 28 （71.4%）.Twenty-seven bone erosions were revealed in 25 patients on MRI.MRI was statistically more sensitive than conventional radiography for detecting bone erosions in RA,P〈0.01.Bone marrow edema in 15 patients appeared as a lesion with ill-defined margins and high signal,located surrounding the bone erosions.Conclusion Bone erosions may be found in the early process of RA.Abnormalities of synovium,synovial sheath and bone can be well described on MRI.MRI is a useful modality for evaluation of patients with early rheumatoid arthritis.