Hodgson Richard J, O'Connor Philip J, Ridgway John P
Leeds Musculoskeletal Biomedical Research Unit, University of Leeds, Chapel Allerton Hospital, Leeds, United Kingdom.
Semin Musculoskelet Radiol. 2012 Nov;16(5):367-76. doi: 10.1055/s-0032-1329880. Epub 2012 Dec 4.
MRI is increasingly used for the assessment of both inflammatory arthritis and osteoarthritis. The wide variety of MRI systems in use ranges from low-field, low-cost extremity units to whole-body high-field 7-T systems, each with different strengths for specific applications. The availability of dedicated radiofrequency phased-array coils allows the rapid acquisition of high-resolution images of one or more peripheral joints. MRI is uniquely flexible in its ability to manipulate image contrast, and individual MR sequences may be combined into protocols to sensitively visualize multiple features of arthritis including synovitis, bone marrow lesions, erosions, cartilage changes, and tendinopathy. Careful choice of the imaging parameters allows images to be generated with optimal quality while minimizing unwanted artifacts. Finally, there are many novel MRI techniques that can quantify disease levels in arthritis in tissues including synovitis and cartilage.
磁共振成像（MRI）越来越多地用于评估炎性关节炎和骨关节炎。目前使用的MRI系统种类繁多，从低场、低成本的四肢成像设备到全身高场7-T系统，每种系统在特定应用方面都有不同的优势。专用射频相控阵线圈的应用使得能够快速获取一个或多个外周关节的高分辨率图像。MRI在控制图像对比度方面具有独特的灵活性，单个MR序列可以组合成方案，以灵敏地显示关节炎的多种特征，包括滑膜炎、骨髓病变、侵蚀、软骨变化和肌腱病。仔细选择成像参数可生成质量最佳的图像，同时将不需要的伪影降至最低。最后，有许多新颖的MRI技术可以量化关节炎在包括滑膜炎和软骨在内的组织中的疾病程度。
