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Abstract #3764

Hybrid MP-RAGE Trajectory with FID Motion Detection and Self-Navigated Motion Correction (MoCoRAGE)

Tobias Kober1, 2, Davide Piccini1, 2, Christoph Forman3, 4, Thorsten Feiweier5, Gunnar Krueger1, 2

1Advanced Clinical Imaging Technology, Siemens Healthcare IM S AW, Lausanne, Switzerland; 2CIBM - AIT, Ecole Polytechnique Fdrale de Lausanne, Lausanne, Switzerland; 3Pattern Recognition Lab, Friedrich-Alexander-University Erlangen-Nrnberg, Erlangen, Germany; 4Erlangen Graduate School in Advanced Optical Technologies, Friedrich-Alexander-University Erlangen-Nrnberg, Erlangen, Germany; 5Siemens AG, Erlangen, Germany

The Magnetisation-Prepared Rapid Acquisition Gradient Echo (MP-RAGE) sequence is widely used in clinical routine and research. However, its comparably long acquisition times render MP-RAGEs susceptible to motion artefacts. The present work explores the feasibility of mitigating the motion susceptibility of MP-RAGEs. While a free-induction-decay navigator is used for motion detection, the self-navigating properties of a hybrid acquisition trajectory are exploited to perform motion correction directly from portions of the imaging data. The motion detection and correction performance was tested in five volunteers proving the feasibility of this concept.