Christoph Juchem1, Robin A. de Graaf1
1Yale University School of Medicine, New Haven, CT, United States
Magnetic field modeling based on individual generic coils has been shown recently to enable the accurate and flexible generation of a multitude of field shapes for MR. Here, the analysis of fundamental performance properties of the multi-coil (MC) concept is presented. The results are compared to dedicated wire patterns for the generation of magnetic field shapes that resemble spherical harmonic functions. Improved magnetic field homogeneity with MC shimming has been demonstrated previously. Along with the higher efficiency for the generation of shim fields as demonstrated in this work, MC shimming bears significant potential to replace conventional spherical harmonic shim systems.
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