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Abstract #3948

Flexible flyback EPSI Waveform Generation under the Constraint of Peripheral Nerve Stimulation

Ralph Noeske1 and Rolf F Schulte2

1GE Healthcare, Potsdam, Germany, 2GE Global Research, Munich, Germany

Echo-Planar Spectroscopic Imaging (EPSI) reduces the long acquisition time of Chemical Shift Imaging. “Flyback” trajectories sampling the lobe only along one direction are commonly used for robustness and artifact reasons. Main challenge in the design is that there is no analytic solution for an SNR optimized readout/flyback trapezoid pair. The goal of this work was to implement a fast SNR optimized algorithm that takes Peripheral Nerve Stimulation into account to calculate waveforms on the fly for any given spectral and spatial resolution and therefore doesn’t require pre-calculated waveforms.

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