颞下颌关节MR冠状影像测量与分析  

Observation and Analysis on Coronal MR Imagines of Cadaver TMJ

作　　者：贺建军[1] 王美青[1] 刘满生[2] 张渊[1] 

机构地区：[1]第四军医大学口腔医学院解剖生理学教研室 [2]第四军医大学附属西京医院放射科,陕西西安710032

出　　处：《华西口腔医学杂志》2004年第6期481-483,490,共4页West China Journal of Stomatology

基　　金：军队"十五"科研规划资助项目 (0 1MB1 1 7) ;陕西省自然科学基金资助项目 (2 0 0 1SM39)

摘　　要：目的　探讨颞下颌关节冠状面形态结构的关系。方法　将福尔马林液浸泡 1年以上的 ,能将下颌固定在牙尖交错位的 15具尸头的 2 8侧TMJ,斜冠状位磁共振质子加权扫描 ,以下颌升支中线为基准 ,作相应测量。结果　①横径由大到小排序为 :关节窝内外径、髁突内外径、关节窝内径、髁突内径、髁突外径、关节窝外径。②髁突外径与关节窝外径间 ,髁突内径与关节窝内径间 ,髁突内外径和关节窝的内外径间均存在正相关关系。③变异系数关节窝外径大于髁突外径、内径大于其他横径。④关节间隙面积与关节盘断面面积正相关。结论　颞下颌关节各结构的冠状形态及大小具有高度协调性 ,髁突相对于关节窝的内外位置关系具有较大的变异范围。Objective To investigate the MR imagine features of TMJ coronal structures.Methods 28 TMJs from 15 cadavers dipped in formalin over 1 year were included. Their mandibles were fixed at intercuspal position when TMJs oblique coronal MR scan was taken. Baseline was draw on the oblique coronal imagining along the ramus of mandible through its center. The corresponding dimensions and areas were measured with electronic ruler.Results The dimensions were in accordance from large to small as: lateral-medial dimension of fossa, lateral-medial dimension of condyle, medial dimension of fossa, medial dimension of condyle, lateral dimension of condyle and lateral dimension of fossa. Three significant co-relative relationship were found: the lateral dimension of condyle with lateral dimension of fossa, the medial dimension of condyle with medial dimension of fossa, and the lateral-medial dimension of condyle with lateral-medial dimension of fossa. CV of lateral dimension of fossa was higher than that of lateral and medial dimension of condyle, and then all the three were higher than other dimensions. The size of the area of joint space shown on oblique coronal imaginings was positively related to that of the area of coronal disc imaginings.Conclusion Significant co-ordinate relationship of condyle and fossa of TMJ coronally was existed, and the condyle position to fossa lateral-medially varied in great.

关 键 词：颞下颌关节 磁共振 解剖学 颞下颌关节紊乱综合征 

分 类 号：R445.2[医药卫生—影像医学与核医学]