Kreipke D L, Conces D J, Sondhi A, Lappas J C, Augustyn G T
Acta Radiol Diagn (Stockh). 1986 May-Jun;27(3):331-3. doi: 10.1177/028418518602700314.
Magnetic resonance imaging of the temporomandibular joint (TMJ) was performed on two normal volunteer subjects and two symptomatic subjects using a 0.15 T resistive magnet. A spin echo pulse sequence with a TE of 38 ms and a TR of 500 ms was employed. The TMJ meniscus is a low signal structure, and the bilaminar zone behind it is a relatively high signal structure. In normal closed mouths, the demarcation between meniscus and bilaminar zone is located at the vertex position above the mandibular condyle. When the condyle translates, the posterior portion of the meniscus bulges into the joint space. Dislocated meniscus can be identified by a gray mass anterior to the condylar head. The joint space is filled with the higher signal of the bilaminar zone. In non-reducible dislocations, the meniscus remains anterior to the condylar head with opening of the mouth. Reduced dislocations appear similar to normal joints in the open mouth.
使用0.15T电阻磁体对两名正常志愿者和两名有症状的受试者进行颞下颌关节（TMJ）的磁共振成像。采用回波时间（TE）为38ms、重复时间（TR）为500ms的自旋回波脉冲序列。TMJ半月板是低信号结构，其后方的双板区是相对高信号结构。在正常闭口时，半月板与双板区之间的分界位于下颌髁突上方的顶点位置。当髁突平移时，半月板的后部突入关节间隙。可通过髁突头部前方的灰色团块识别半月板脱位。关节间隙充满双板区的较高信号。在不可复性脱位中，张口时半月板仍位于髁突头部前方。可复性脱位在张口时看起来与正常关节相似。
