3T磁共振成像显示颞下颌关节盘的技术研究  

Technical study of temporomandibular joint disc showing with 3T magnetic resonance imaging

作　　者：鄢荣曾[1] 杨成[2] 袁红梅[1] 顾晓明[2] 

机构地区：[1]武警江西总队医院口腔科,江西南昌330034 [2]武警总医院口腔医学中心,北京100039

出　　处：《华西口腔医学杂志》2010年第6期619-622,共4页West China Journal of Stomatology

摘　　要：目的探索3T磁共振成像(MRI)显示颞下颌关节盘的序列、参数及电影成像方式的技术特点,并为临床研究颞下颌关节盘病变提供形态与功能影像学参照。方法选择15例正常志愿者和7例颞下颌关节损伤患者为研究对象,采用GE Signa HD 3T MRI和颞下颌关节专用表面线圈对颞下颌关节进行扫描,获得斜矢状、斜冠状闭口位FSE-XL/T1WI、FLAIR/T1WI、FSE-XL/PDWI、FSE/PDWI+FS、FRFSE-XL/T2WI、FRFSE/T2WI+FS扫描及斜矢状张口位FSE-XL/T1WI、FSE-XL/PDWI图像。由口腔颌面外科医师和MRI医师共同对各序列进行打分,分析各序列不同加权像对颞下颌关节盘的显示效果。结果 PDWI对关节盘的显示效果得分最高,能清楚显示关节盘的解剖结构与形态。T2WI对关节盘损伤、撕裂、穿孔和关节囊积液显示良好,对关节盘移位情况则以PDWI序列显示效果为好。结论 3T MRI可以清楚地显示关节盘在关节运动中的动态改变与病变受累情况,对颞下颌关节软组织损伤的诊治有重要价值。T1WI、PDWI及T2WI应作为常规的扫描方法。Objective To explore the magnetic resonance imaging（MRI） characteristics of temporomandibular joint（TMJ） disc including sequence and parameters of the film imaging modalities by means of 3T MRI.To provide morphological and functional reference images for clinical study of temporomandibular joint disc lesions.Methods Fifteen normal volunteers and seven patients with TMJ soft tissue injuries after condylar fractures were imaged by using GE Signa HD 3T MRI system and bilateral TMJ surface coils with oblique sagittal and oblique coronal section.Oblique sagittal and oblique coronal images of mouth close were performed with FSE-XL/T1WI,FLAIR/T1WI,FSE-XL/PDWI,FSE/PDWI＋FS,FRFSE-XL/T2WI,FRFSE/T2WI＋FS,and oblique sagittal images of mouth open with FSE-XL/T1WI,FSE-XL/PDWI.All MRI findings were analyzed by three senior radiologists and three senior surgeons respectively.Results PDWI showed the best effect in showing articular disc and surrounding structures clearly.T2WI showed articular disc lesions best,including articular disc injury,split,perforation,fluidify of articular capsule.For the displace of articular disc,PDWI showed the best effect.Conclusion 3T MRI can clearly show changes of articular disc during exercise and disease involvement,and play an important role in diagnosis of soft tissue injuries of TMJ in condylar fractures.T1WI,PDWI and T2WI should be routine scan method.

关 键 词：颞下颌关节 3T磁共振成像 关节盘 

分 类 号：R445.2[医药卫生—影像医学与核医学]