With this educational poster,
the authors aimed to: Share information about the technical aspects of the temporomandibular joint magnetic resonance Describe the main findings in normal and abnormal examinations Suggest a model of structured reporting
THE TEMPOROMANDIBULAR JOINT 1.1 Anatomy The temporomandibular joint has four main anatomical structures (figure 1).
They are the mandibular condyle,
the mandibular fossa and the articular eminence of the temporal bone and,
last but not least,
the articular disk (or articular meniscus).
as explained in the following sections,
this disk is the key element in the function (and dysfunction) of the joint. The articular disk is a biconcave fibrocartilaginous structure that can be...
Findings and procedure details
TEMPOROMANDIBULAR MRI 2.1 Protocol The protocol used for the MR study of temporomandibular joint varies from institution to institution.
somepivotal sequences. First,
most studies start with and axial T1W SE sequence with a large FOV encompassing both the temporomandibular joints.It is useful both to plan the following oblique sagittal and oblique coronal sequences (figure 5) and to compare the mandibular condyles orientation. Next,
an oblique coronal T1-weighted...
The articular disk plays the main role in the vast majority of the temporomandibular dysfunction cases.
For their evaluation,
MRI presents itself as a quick and easy examination,
with few sequences needed and without the injection of intravenous contrast. The radiologist should be familiar with thenatural historyof this dysfunction,
from the first signs to the end-stage degenerative results,
but provide a simple,
structured and descriptive report of the imaging findings.
Anatomy of the temporomandibular joint.
Semin Ultrasoud CT MT 2007; 28:170-183. 2.
MR imaging of the temporomandibular joint.
Neuroimag Clin N Am 2004; 14:761-775. 3.
MR imaging of temporomandibular joint dysfuntion: a pictorial review.
Radiographics 2006; 26:765-781. 4.
Imaging of the...