Monica Tafur MD, Presenter: Nothing to Disclose

Reni Biswas, Abstract Co-Author: Nothing to Disclose

Kyu-Sung Kwack MD, PhD, Abstract Co-Author: Nothing to Disclose

Won Chol Bae PhD, Abstract Co-Author: Nothing to Disclose

Robert Healey, Abstract Co-Author: Nothing to Disclose

Sheronda Statum, Abstract Co-Author: Nothing to Disclose

Jiang Du PhD, Abstract Co-Author: Nothing to Disclose

Christine B. Chung MD, Abstract Co-Author: Nothing to Disclose

The objectives are to review the anatomy of the Temporomadibular joint (TMJ) using high-resolution MRI with ultrashort time-to-echo (UTE) techniques; to quantify MR properties of the disc using conventional and UTE quantitative MRI (qMRI) techniques; and to correlate MR with histochemical properties of the disc. 1. High-resolution MRI demonstrate the anatomy of osseous and soft tissues of TMJ. 2. High-resolution UTE MRI allows visualization of tissues with short T2 components in TMJ such as the fibrocartilage in the disc, mandibular condyle and articular eminence of temporal bone, not provided by the standard clinical sequences. 3. The disc of the TMJ is composed mostly by short T2 components such as fibrocartilaginous matrix and collagen network with an average T2* value of 17.3ms. The main contrast available in the TMJ is obtained from T2* contrast. 4. MR properties of the TMJ articular disc correlate with the collagen organization and the degree of GAG staining. UTE T1rho showed stronger correlation as compared with T2 and T2* techniques.

1. Anatomy of the TMJ demonstrated in high-resolution UTE MRI with illustrations and correlation with gross anatomy in human cadaveric specimens. 2. Quantitative MRI in normal and abnormal articular discs and correlation of qMRI values with histochemical composition.  

http://abstract.rsna.org/uploads/2014/14006266/14006266_7cwg.pdf

Tafur, M, Biswas, R, Kwack, K, Bae, W, Healey, R, Statum, S, Du, J, Chung, C, High-Resolution and Quantitative MR Imaging of the Temporomandibular Joint.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14006266.html