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. Author manuscript; available in PMC: 2010 Apr 20.
Published in final edited form as: Concepts Magn Reson Part B Magn Reson Eng. 2010 Apr 1;37B(2):65–74. doi: 10.1002/cmr.b.20159

Figure 4.

Figure 4

One quadrant of the relative residual fields (top figures) and the absolute residual fields (bottom figures) in the xy plane for the X2–Y2 shim coils designed using minimum inductance (a, c) and minimum power methods (b, d). Within the ROI and in the xy plane, the average relative residual fields are <2% and the average absolute residual fields are <10−7 T when evaluated using both design methods. The magnetic fields produced by the coils designed using minimum power and minimum inductance methods were scaled to have the same efficiency (17 mT/m2/A).