Abitbul Vered, Lidar Merav, Shabshin Noga, Flusser Gideon, Eshed Iris
Department of Diagnostic Imaging, Sheba Medical Center, Tel Hashomer and Sackler Faculty of Medicine, Tel Aviv University.
Harefuah. 2011 Jul;150(7):563-7, 619, 618.
Spondyloarthropathies are characterized by inflammatory involvement of the sacroiliac joints [SIJ] and sacroiliitis is a diagnostic criterion for the disease. Magnetic resonance imaging (MRI) is considered the preferred imaging modality for detection and diagnosis of sacroiliitis in its early stages. We reviewed MRI examinations of the SIJ performed in our institution, evaluated the findings and the change in study prevalence along the years.
All SIJ MRI studies performed in our institution between 2005-2009 were evaluated in consensus by an intern and a muscutoskeletal staff radiologist. The following findings were registered: Chronic changes: erosions, bony bridges, subchondral sclerosis. Acute findings: bone marrow edema, contrast enhancement. Sacroitiitis was diagnoses based on these findings. The prevalence of SIJ MRI studies was calculated and compared with all musculoskeletal MRI studies performed in these years.
A total of 93 SIJ MRI studies were performed between 2005-2009. A gradual increase in the number of studies was detected in these years. The number of SIJ MRI studies performed during 2009, was 8.2 times higher than in 2005, while the increase in musculoskeletal MRI studies was only 2.5 fold (p < 0.001). 53 subjects (57%) were diagnosed with sacroiliitis (male/female: 25/28, average age: 30 years), alternative diagnosis was given in 4 cases and in the rest no abnormality was detected.
SIJ MRI is highly sensitive for inflammatory changes of the sacroiliac joints. Awareness of the important role of this study for early diagnosis and treatment of spondyloarthropathies as expressed in a substantial rise in referrals that has dramatically increased in the last years.
脊柱关节病的特征是骶髂关节（SIJ）出现炎症，骶髂关节炎是该疾病的一项诊断标准。磁共振成像（MRI）被认为是早期检测和诊断骶髂关节炎的首选影像学检查方法。我们回顾了在本机构进行的骶髂关节MRI检查，评估了检查结果以及这些年研究患病率的变化。
由一名实习生和一名肌肉骨骼放射科工作人员共同对2005年至2009年期间在本机构进行的所有骶髂关节MRI研究进行评估。记录以下结果：慢性改变：侵蚀、骨桥、软骨下硬化。急性表现：骨髓水肿、对比增强。根据这些结果诊断骶髂关节炎。计算骶髂关节MRI研究的患病率，并与这些年进行的所有肌肉骨骼MRI研究进行比较。
2005年至2009年期间共进行了93项骶髂关节MRI研究。这些年中检测到研究数量逐渐增加。2009年进行的骶髂关节MRI研究数量是2005年的8.2倍，而肌肉骨骼MRI研究的增加仅为2.5倍（p < 0.001）。53名受试者（57%）被诊断为骶髂关节炎（男/女：25/28，平均年龄：30岁），4例有其他诊断，其余未发现异常。
骶髂关节MRI对骶髂关节的炎症改变高度敏感。近年来转诊量大幅上升，表明人们意识到这项检查对脊柱关节病早期诊断和治疗的重要作用。
