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Abstract #1838

Artifact reduction of dental implants on high resolution MR imaging

Tim Hilgenfeld1, Alexander Heil1, Sebastian Schwindling2, David Grodzki3, Mathias Nittka3, Daniel Gareis4, Peter Rammelsberg2, Martin Bendszus1, Sabine Heiland1, and Marcel Prager1

1Division of Neuroradiology, University Heidelberg, Heidelberg, Germany, 2Division of Prosthodontics, University Heidelberg, Heidelberg, Germany, 3Siemens Healthcare GmbH, Erlangen, Germany, 4NORAS MRI products GmbH, Höchberg, Germany

Dental MRI is a new technique which is often impaired by artifacts due to metallic dental implants. Several MRI sequences were developed to reduce susceptibility artifacts (e.g. for orthopaedic implants). Here, we for the first time systematically evaluated MR sequences for artifact reduction in dental implants. Smallest artifact volume was measured for 2D-TSE sequences. Since imaging of dental structures benefit from high resolution and possibility of 3D reconstructions 3D sequences are advantageous. Significant artifact reduction was noted for SPC-WARP measuring only 2.1 times artifact volume of TSE sequence instead of 4.8 times when using standard SPC sequence.

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