J Korean Radiol Soc.  1994 Sep;31(3):421-429.

Dynamic MRI of Internal Derangement of Temporomandibular Joint

• Chung EC
• Kim HY
• Chung HI
• Kim YK
• Suh JS

Abstract

PURPOSE
To evaluate the value of fast field echo(FE) technique in accesing temporOmandibular joint(TMJ) dynamics.
MATERIALS AND METHODS
A series of 120 TMJ MRI examinations of 60 symptomatic patients was performed. The fast FE technique was used to provide dynamic images of the TMJs in various phase of mouth opening with a step-bite-block.
RESULTS
Among 120 cases, there were 30 cases which were normal, 21 cases of anterior displacement with reduction, 66 cases of anterior displacement without reduction, 11 cases of deformity of menisci, 23 cases of bony deformity, and 3 cases of medial displacement. The menisci and condyles were clearly delineated and the motions of the menisci during jaw opening were well evaluated in both normal and pathologic conditions.
CONCLUSION
The dynamic TMJ MRI scan using fast FE technique permits both fast scanning and study of joint dynamics as well as TMJ anatomy.

MeSH Terms

Congenital Abnormalities
Humans
Jaw
Joints
Magnetic Resonance Imaging*
Mouth
Temporomandibular Joint*