Abstract #0912

A Deselecting Alias Approach to Volumetric Zoomed Imaging

Nicolas Arango¹, Molin Zhang¹, Jason Stockmann^2,3, Jacob White¹, and Elfar Adalsteinsson^1,4

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 ∆B₀control 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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