Abstract
AbstractThe application of MRI as non-invasive imaging modality for dental diagnosis has not entered clinical routine due to its limited performance in assessment of dental hard tissues, due to the related very short T2/T2* - relaxation times of well below 200 ìs. With the recently introduced ultra-short echo time (UTE) MRI techniques, image acquisitions with echo times as low as a few ìs became possible. The objective of this work is to investigate the applicability of ultra-short echo time (UTE) MRI for the assessment of structural changes in the enamel, the dentin and the pulpa tissue. The UTE technique has been evaluated in-vitro in extracted human teeth and in-vivo in volunteers. Furthermore, the impact of dental filling materials on the resulting image quality has been assessed in-vitro for a variety of different filling materials.KeywordsMRIultra-short echo time3D imaging
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