Meeting Banner
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.

Abstract PDF Presentation Video

Keywords

acceptance acquisition acquisitions advanced aims always among analyses applying around arranged averaging brain clearly clinical command compressed computed consecutively contrast contributed corners correct corrected correction course cyan datasets decay depicting derived described detect detection directly distribution encoding error even every excellent exemplary exploited expressed extra final five foundations framework golden good gradient green grid half head highly hybrid identify illustration included increasing induction instant intended intrinsic inversion materials matrix minor minutes mitigating modified motion motionless navigating navigation navigator omitted optical optimal oversampled oversampling partial patterns place portion portions position practice precisely prepared prior protocol pseudo pulse qualitatively rage rages random rapid readout readouts recognition reconstructed reconstructions reduced registered registering registration reordering repeated repetition rigid rotation roughly samples sampling scanner scheme school sector self session shaking skull space spatial spiral spirally spirals start subject subjects subset successfully supported susceptibility susceptible technologies terms together trajectory transformation uniform upon volume volumes volunteer volunteers white