Angela Lynn Styczynski
Snyder1, Curtis Andrew Corum1, Steen Moeller1,
Nathaniel J. Powell2, Michael Garwood1
1Department
of Radiology, University of Minnesota, Minneapolis, MN, United States; 2Department
of Neuroscience, University of Minnesota, Minneapolis, MN, United States
MR images are typically created by Fourier transforming signals that have been spatially encoded using frequency- and phase-encoding gradients. Recently, new spatiotemporal-encoding strategies allow direct image formation without FT by sweeping a resonance plane through time and space. Alternatively, it is demonstrated here that a combination of RF and gradient modulation can move a relatively isolated resonance region sequentially through space allowing for time-dependent echo formation and 2D imaging without FT. The method, called steering resonance (STEREO), has the unique capability to treat each region in space independently, which can potentially be exploited to compensate extreme B1 and B0 inhomogeneity.