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Dynamic MRI of the TMJ under physical load

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Hopfgartner, A., Tymofiyeva, O., Ehses, P., Röttner, R., Boldt, J., Richter, E.-J., et al. (2013). Dynamic MRI of the TMJ under physical load. DentoMaxilloFacial Radioliology, 42(9): 20120436, pp. 1-7. doi:10.1259/dmfr.20120436.


Cite as: http://hdl.handle.net/21.11116/0000-0001-3DA4-2
Abstract
Objectives: The objective of this study was to examine the kinematics of structures of the temporomandibular joint (TMJ) under physiological load while masticating. Methods: Radial MRI was chosen as a fast imaging method to dynamically capture the motions of the joint’s anatomy. The technique included a golden ratio-based increment angle and a sliding window reconstruction. The measurements were performed on 22 subjects with and without deformation/displacement of the intra-articular disc while they were biting on a cooled caramel toffee. Results: The reconstructed dynamic images provided sufficient information about the size and localization of the disc as well as the change of the intra-articular distance with and without loading. Conclusions: The feasibility of the golden ratio-based radial MRI technique to dynamically capture the anatomy of the TMJ under physical load was demonstrated in this initial study.