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Abstract #4321

Ultra-short Detection Time Imaging of the Curing of Composites for Dental Care using Parameter selective T2* MR-Microimaging on a human UHF-scanner

Andreas Berg 1,2 and Karin Wiesauer 3

1 Center for Medical Physics and Biomedcial engineering, Medical University of Viennna, Vienna, Austria, 2 MR Centre of Excellence, Medical University of Vienna, Vienna, Austria, 3 RECENDT Research Center for Non-destructive Testing GmbH, Linz, Austria

The MR-visualization of the very rigid composite materials for dental care appears to be impossible by MR methodology based on spin echo detection due to the very short T2* of the polymer and ceramic compounds. However we demonstrate here the possibility to visualize the solidifying process during illumination at high spatial resolution in these very rigid Biocompatible polymer-ceramic composites using UTE T2* micro-mapping on a 7T Ultra-High-Field human scanner. Quality control analysis allows for the detection of possible sources of artifacts in UTE-imaging. Inhomogeneities in the composite as possible source for mechanical failure are detected.

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