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Abstract #4969

Spiral MRI Trajectory Design with Frequency Constraint

Thomas Oberhammer1,2, Markus Weiger, 1,2, Franciszek Hennel3

1Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland; 2Bruker BioSpin AG, Faellanden, Switzerland; 3Bruker BioSpin MRI GmbH, Ettlingen, Germany

An improved, 3-domain design for Archimedean spiral trajectories is proposed, utilising the instantaneous frequency for taking into account frequency limitations of the gradient system. It is demonstrated by simulations and experiments that the new layout enables creating trajectories with high fidelity and efficiency, leading to improved spiral image quality.