颞下颌关节磁共振影像形态与解剖形态相关性研究

目的：探讨颞下颌关节（TMJ）的磁共振成像（MRI）和相应解剖形态的相关关系。方法：4具尸体,①双侧TMJMRI（头部线圈、SE序列T1加权）检查和解剖学测量,并作相应的相关性分析;②翼外肌正矢状位与髁状突翼颌斜位（CPMOP）图像及相关性分析。结果：TMJ骨质结构MRI影像检查结果与解剖测量结果具有高度一致性,关节盘内1／3两种测量结果有相关性;翼外肌正矢状位MRI和髁状突翼颌斜位MRI图像具有高度相关关系。结论：MRI（头部线圈、SE序列T1加权）可用以TMJ硬组织形态的观察和测量,翼刈肌正矢状位片可用以对翼外肌上下头形态测量。

Relationship of magnetic resonance imaging with anatomic characteristics of temporo mandibular joint

?Objective: To study the relationship of magnetic resonance imaging(MRI) with anatomic characteristics of temporomandibular joint(TMJ). Methods: MRI(head ring, SE, T1 weight) was taken and anatomic measurement was conducted in 8 TMJs of 4 cadavers. The anatoic characteristics and the images of lateral pterygoid muscle(LPt) in sagittal view and condylar pterygomandibular oblique projection( CPMOP ) were analysed.Results: Significant correlation( P <0.01) was found between MRI and anatomic measurements in condyle diameter and in the length, thickness and angle of superior and inferior LPts, while correlation( P <0.05) was only found in the medial 1/3 diameter of the discs. Conclusion: MRI (head ring, SE, T1) may be a reliable means for the analysis of anatomical features of TMJ osseous tissue and that of sagittal view for LPt.