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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