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Abstract #3334

Retrospective Gated MRI for High-Resolution Imaging of the TMJ Dynamics During Active Mastication

Daniel Kammer1, Anna-Katinka Bracher1, Andreas Horneff2, Erich Hell2, Johannes Ulrici2, Axel Bornstedt1, Volker Rasche1

1Internal Medicine II, University Hospital of Ulm, Ulm, BW, Germany; 2Sirona Dental Systems

Imaging of the dynamics of the temporomandibular joint (TMJ) is of interest for varies pathologies. High-resolution or three-dimensional assessment under active mastication is currently limited by the required realtime imaging techniques. The objective of this contribution is to investigate the application of gated retrospective cine reconstruction technique for providing high-quality dynamic images of the TMJ during active mastication.

Keywords

achievable acquisition active actual adapted adjusting anatomic anatomy angular annals appears application applied applying appreciated approaches artifacts assessment attached background bail bandwidth become bins canal chin cine columns combination combined compatible connected continuous continuously contrast contribution covered cycle cycles degrees dental dependent designed despite device devices dimensional direct discus distribution drove duration dynamic dynamics efficient enabling encoder enrolled excitation external facilitate feasibility feasible free frequency full gated gradient graph head hell holding hospital important improving include indicate indirect internal investigate joint ligaments limited mainly mastication materials maximal measuring medicine minute monitored motion normalized objective obvious open parallel pathologies patient period pixel poor position positions preferably prior projection projections proposed pulse quality rapid real realistic reconstructed reconstruction recorded reproducibility required resolution resolved retrospective rows scanner scanning sharp since snapshots space spatial steady still streaking structures synchronized systems teeth temporal temporally tracking trans uneven update variety visualization volunteer volunteers yielding