Meeting Banner
Abstract #0519

Signal Leakage(L-Factor) as a Measure for Parallel Imaging Performance Among Simultaneously Multi-Slice (SMS) Excited & Acquired Signals

Steen Moeller1, Junqian Xu1, Edward J. Auerbach1, Essa Yacoub1, Kamil Ugurbil1

1Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN, United States

A Monte-Carlo type analysis with a fixed spectral frequency driving function is introduced as a new metric (L-factor) for determining residual signal leakage for slice separation from simultaneous multi-slice acquisitions. Compared with the geometry factor for noise amplification, the metric is shown to be a better quantifiable metric for high acceleration factors.

Keywords

ability able accelerations acceptable account acquisition acquisitions adding alias aliased aliasing alone among amount amplification applications arbitrary artifacts band become benefits berg blipped body bottom brain channel coil comparable concern concerning configuration consider considered consists controlled coupled critical defined degeneration depict describe described designate developments diffusion distinct distribution encodings energy even excitations excited exciting experiment facto formulated frames frequencies frequency future give gradients guide hand head histograms human imposed improved include isotropic leak leakage leaking limited linear listed losses made making many mapped masked mate matrix measure mens ming modest modulation much needed networks noise onto others part pixels potential prior project projecting propose proposed proved pulse quantified quantify quired readout real recently reduce reductions related residual resolutions response resting robust sampling scanner schemes sensitivity separate separation series significantly simulated simulation since slice slices spatial spurious subject subsequently table temporal transmitter unique utility variety volume whole widely