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Abstract #4829

3D MSVAT-SPACE-STIR or 2D SEMAC-STIR for high resolution dental MRI?

Tim Hilgenfeld1, Marcel Prager2, Alexander Heil2, Daniel Gareis3, Mathias Nittka4, David Grodzki4, Martin Bendszus2, and Sabine Heiland2

1Heidelberg University, Heidelberg, Germany, 2Heidelberg University, 3NORAS MRI products GmbH, 4Siemens Healthcare GmbH

Dental MRI is a new and promising diagnostic tool. Unfortunately, in presence of implants image quality is impaired by failure of fat suppression and susceptibility artifacts. Here, we for the first time systematically evaluated fat saturated MR sequences for artifact reduction for dental MRI. Smallest artifact volume was noted for SEMAC-STIR and TSE-STIR sequences. But, higher and isotropic resolution was only achieved with MSVAT-SPACE-STIR sequence. No artifact reduction was measured for SEMAC-STIR compared to standard TSE-STIR. In contrast, MSVAT-SPACE-STIR reduced artifacts up to 70% compared to standard SPACE-STIR. Since imaging of dental structures benefit from isotropic high resolution MSVAT-SPACE-STIR is advantageous.

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