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Abstract #3798

Optimising for Eddy Currents in Compressed Sensing Spiral Acquisitions

Kaveh Vahedipour1, 2, Nadim Jon Shah1, 3

1Juelich Research Centre, Juelich, Germany; 2Maastricht University, Maastricht, Netherlands; 3RWTH Aachen University, Aachen, Germany

Combination of non-Cartesian data sampling and Compressed Sensing is an obvious way to go for approaching to the best SNR per unit time. Here, the non-Cartesian sampling strategy must incorporate the random sampling paradigm in the most efficient way in multiple facets. In general, one would like to acquire as much signal amplitude as possible per image while achieving as much randomness as possible of the sampling footprint and thus as little coherences in the artifact domain as achievable. However, a third aspect, which has thus far remained unconsidered, is that of induction of Eddy-currents and their effect on the image quality.

Keywords

accelerated accelerating acceleration according achieved acquisition acquisitions additional additionally addressing allows amongst amplitude amplitudes another approximation aspect attaining audience benefit benign best blurring burred challenging coherent combination combine compressed computational concerned consider consideration considering constraint contrast cycles dark degree delivers dense depiction design development eddy electrical emphasis encoding entire every example factory feasibility field fluctuation full function gains general generally generation good gradient gradients great hardware history hottest important individual induced inspection introduces jeopardies keep length like limited little logical mechanical must namely nature need needs nice noise norm operation opposed optimal original parallel particularly peak proposed radius random randomly randomness readily readout readouts reality recent reconstructed reconstruction reduce reveals sampling scanned seems sense sensing shah shorten shorter shot shots side simultaneously slew space sparing spiral spirals step strategies subtle suggested suited summing target terms third topics traditional trajectories trajectory transfer unit valuable variation varying violation visibly visual waveform window workhorse