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Abstract #4224

Computational Shim Coil Design Applied to Augmenting a Shim Array with a Non-Eye-Occluding Face Plate

Nicolas Arango1, Jason Stockmann2,3, Elfar Adalsteinsson1,4, and Jacob White1
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

Local multi coil shim arrays enable improved brain ΔB0 homogeneity shimming at low overall cost. We have developed tools for the computational design of additional local shim coils to augment existing shim arrays using sparse factorization techniques. A proof of concept seven channel face shim coil was designed and tested in vivo. This proof-of-concept shim coil shows promise for improving static field inhomogeneity in the pre-frontal cortex.

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