Abstract #5082

Reduction of ringing artifacts for high resolution 3D RARE imaging at high magnetic field strengths

Martin Krämer¹, Karl-Heinz Herrmann¹, Silvio Schmidt², Otto W Witte², and Jürgen R Reichenbach^1,3,4,5

¹Medical Physics Group, Institute of Diagnostic and Interventional Radiology, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany, ²Hans Berger Department for Neurology, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany, ³Michael Stifel Center for Data-driven and Simulation Science Jena, Friedrich Schiller University Jena, Jena, Germany, ⁴Abbe School of Photonics, Friedrich Schiller University Jena, Jena, Germany, ⁵Center of Medical Optics and Photonics, Friedrich Schiller University Jena, Jena, Germany

High resolution 3D-RARE imaging at 9.4T can be very challenging due to increased artifacts caused by strong T₂- and Gibbs ringing. In this work, we present the combination of two correction algorithms, local subvoxel-shift unringing and T₂-compensation, to reduce effectively both types of artifacts. For this purpose, the local subvoxel-shift algorithm has been extended to the third spatial dimension and evaluated in healthy mice.

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