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Abstract #0912

A Deselecting Alias Approach to Volumetric Zoomed Imaging

Nicolas Arango1, Molin Zhang1, Jason Stockmann2,3, Jacob White1, and Elfar Adalsteinsson1,4
1Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, United States, 2A. A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, United States, 3Harvard Medical School, Boston, MA, United States, 4Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, United States

Reduced FOV imaging using ∆B0 control is limited by magnetostatics, but careful tracking of aliasing enables the vast reduction in the deselection volume required. A 2-sided spectral approach for the deselection enables the combination of strong linear gradients and adaptable multicoil shim array ∆B0 fields to perform selective excitation in concert. Simulations indicate potential for central volume rFOV where prior work in ∆B0-based rFOV imaging was limited to peripheral volumes.

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