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. Author manuscript; available in PMC: 2021 Jan 1.
Published in final edited form as: IEEE Trans Med Imaging. 2020 Dec 29;40(1):129–142. doi: 10.1109/TMI.2020.3023329

Figure 5:

Figure 5:

Optimized stream function solutions and extracted winding patterns and the resulting PNS oracle/PNS threshold maps in the female body model for the unoptimized and optimized three-layer X-axis head coils (H1 and H2) and Z-axis head coils (H3 and H4). The colored spheres correspond to hotspots with largest PNS oracle (smallest PNS threshold). Both the color and the sphere size encode the PNS oracle value. The optimized X-axis winding pattern leads to a 67% increase in PNS threshold (from 133 mT/m to 222 mT/m) for the PNS oracle specific 1 kHz sinusoidal waveform (40% reduction in PNS oracle value from 7.5 m/T to 4.5 m/T). The optimized Z-axis windings lead to a 66% increase in PNS threshold (40% reduction in PNS oracle).