Schellhas K P, Wilkes C H, Fritts H M, Omlie M R, Heithoff K B, Jahn J A
Center for Diagnostic Imaging, St. Louis Park, MN 55416.
AJR Am J Roentgenol. 1988 Feb;150(2):381-9. doi: 10.2214/ajr.150.2.381.
Nineteen abnormal temporomandibular joints (TMJs) imaged with high-field-strength surface-coil MR are presented to illustrate specific changes associated with disk derangement, trauma, and previous surgery. Cases were selected from a series of 248 TMJ MR studies in 144 patients (9-68 year old, 130 females and 14 males) performed during a 5-month period. Surgical findings were available for correlation in 44 of the 248 joints studied. Increased signal caused by myxoid degeneration within the degenerating meniscus was seen, as were pathologic changes including atrophy, fibrosis, and contracture of masticatory muscles occurring with internal derangements. Advantages and limitations of MR are discussed with reference to arthrography and videofluoroscopy. High-resolution and partial-flip-angle images of a normal joint are provided for comparison. In most clinical circumstances, MR is the procedure of choice when examining the TMJ, because it provides contrast resolution of soft-tissue structures superior to that of conventional imaging techniques.
本文展示了19个采用高场强表面线圈磁共振成像的异常颞下颌关节（TMJ），以说明与盘状移位、创伤及既往手术相关的特定变化。病例选自144例患者（年龄9 - 68岁，女性130例，男性14例）在5个月期间进行的248项TMJ磁共振研究系列。在研究的248个关节中，44个关节有手术结果可供对比。可见退变半月板内黏液样变性导致的信号增强，以及内部紊乱时出现的包括咀嚼肌萎缩、纤维化和挛缩在内的病理改变。参照关节造影和视频荧光透视讨论了磁共振成像的优缺点。提供了正常关节的高分辨率和部分翻转角图像以供比较。在大多数临床情况下，磁共振成像在检查TMJ时是首选方法，因为它提供的软组织结构对比分辨率优于传统成像技术。
