Larheim T A, Smith H J, Aspestrand F
Department of Oral Radiology, Faculty of Dentistry, University of Oslo, Norway.
Radiology. 1990 May;175(2):527-31. doi: 10.1148/radiology.175.2.2326477.
Thirty-six temporomandibular joints (TMJs) in 28 symptomatic patients (aged 14-40 years) with rheumatic disease (mostly rheumatoid arthritis) were studied with magnetic resonance (MR) imaging and hypocycloidal tomography. MR images of four TMJs were normal. Another four TMJs showed internal derangement. Of the 28 TMJs presumed to show rheumatic disease involvement (26 with condylar destruction or deformation), 23 showed abnormal disk structure--five showing severe disk destruction and 18 showing less severe abnormalities (inhomogeneous structure, fragmentation, poor delineation, and severe flattening). MR images showed bone abnormalities in 27 of the 36 TMJs, and tomography showed abnormalities in 25 of the 36 TMJs. Good agreement between the two imaging modalities regarding surface irregularities was found. However, MR imaging demonstrated more extensive bone abnormalities than did tomography in 11 TMJs. The potential of MR imaging for depicting bone and soft-tissue abnormalities associated with rheumatic TMJ involvement was clearly demonstrated.
对28例患有风湿性疾病（主要为类风湿性关节炎）的有症状患者（年龄14 - 40岁）的36个颞下颌关节（TMJ）进行了磁共振（MR）成像和 hypocycloidal断层扫描研究。4个TMJ的MR图像正常。另外4个TMJ显示关节内紊乱。在推测显示有风湿性疾病累及的28个TMJ中（26个有髁突破坏或变形），23个显示盘状结构异常——5个显示严重的盘状破坏，18个显示较轻的异常（结构不均匀、碎裂、边界不清和严重扁平）。MR图像显示36个TMJ中有27个存在骨质异常，断层扫描显示36个TMJ中有25个存在异常。发现两种成像方式在表面不规则方面具有良好的一致性。然而，在11个TMJ中，MR成像显示的骨质异常比断层扫描更广泛。清楚地证明了MR成像在描绘与风湿性TMJ累及相关的骨质和软组织异常方面的潜力。
