颞下颌关节内紊乱症;_磁共振成像;

颞下颌关节内紊乱症磁共振研究

http://www.100md.com 《新疆医科大学学报》 2007年第1期

颞下颌关节内紊乱症;,磁共振成像;,颞下颌关节;关节盘;,双板区,,颞下颌关节内紊乱症;,磁共振成像;,颞下颌关节;关节盘;,双板区,关键词：颞下颌关节内紊乱症;磁共振成像;颞下颌关节;关节盘;双板区,1资料与方法,2结果,3讨论,参考文献:

     摘要：目的: 通过对关节盘前后界限的测定，确定颞下颌关节内紊乱症(TMJ ID)患者关节盘移位改变的范围，探讨其临床意义。方法: 对17例(共34个颞下颌关节)临床诊断为颞下颌关节内紊乱症的患者，在SE SIGNA TWO 1.5T超导型MR系统上，采用颞下颌关节MRI表面线圈，对双侧颞下颌关节进行斜矢状闭口位、开口位和斜冠状闭口位自旋回波(SE)T1WI、SET2WI、SEPDWI、快速多相位梯度回波(FSPGR)序列进行扫描，与15例(共30个颞下颌关节)正常人的MR影像进行对比分析。结果: 两组64侧关节均获得清晰的MR图像,T1WI和PDWI图像斜矢状闭口位时，在TMJ ID组关节盘前缘位于关节结节最低点垂直线前约0.42 mm，而正常对照组则位于其前约0.14 mm，两组间差异有统计学意义，在TMJ ID组关节盘后带与双板区交界处约位于髁状突12点位垂直线14.4°处, 而正常对照组则位于其3.19°处,两组间差异有统计学意义。结论: 采用颞下颌关节表面线圈进行的MRI扫描图像能非常清晰地显示关节盘位置、形态及相关组织的结构状态，因此能够准确地诊断颞下颌关节内紊乱症，TMJ ID组在斜矢状闭口位时，关节盘前后缘均有明显的前移，从而可人为关节盘移位是颞下颌关节内紊乱症的重要指征。

    关键词：颞下颌关节内紊乱症; 磁共振成像; 颞下颌关节;关节盘; 双板区

    A study In temporomandibular joint Internal Derangement (TMJ ID) with Magnetic Resonance Imaging

    XIA Yizha， JIA Wenxiao， Aman

    (Department of Medical Imaging，the First Affiliated Hospital of Xinjiang Medicaol University，Urimqi 830054, China)

    Abstract: Objective: To determine the anterior and posterior border of articular disc and disc displacement in TMJ ID people and its clinical significance. Methods: The study comprised 34TMJs in 17 patients, who were assigned a clinical TMJrelated diagnosis of ID in at least one TMJ. Bilateral oblique sagittal of close mouth and open mouth and oblique coronal of close mouth MR images were obtained subsequently. Joints were studied in T1, T2 and PD weighted images and /or FSPGR series, were compared with those of 15 (30TMJs) normal people. Results: Two groups 64 sides joint equally to obtain limpid MR image, on oblique sagittal of close mouth T1 and PDW images showed that the anterior disc border in TMJ ID people was sited around 0.42mm, before the vertical line of the lower end of articular eminence,while it is sited 0.14 mm ......

百拇医药网 http://www.100md.com/html/DirDu/2007/02/17/37/65/38.htm

您现在查看是摘要页，全文长 10940 字符。