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. 2024 Jan 10;37(2):169–183. doi: 10.1007/s10334-023-01138-3

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© The Author(s) 2024

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Fig. 8 — Impact of the third-order shim coils. GTF a magnitude and b phase self-term responses are shown for the Terra 7 T and Iseult 11.7 T systems (third-order shim coils connected and disconnected). Subplot c shows the most important third-order spherical harmonics (R² = X² + Y² + Z.²) response measured with a dynamic field camera on Iseult at 11.7 T with the third-order shim coils connected vs. disconnected (same color legend). Subplot d reports the power deposition measurement in the He bath of Iseult at 11.7 T between 1300 and 2000 Hz (renormalized for 70 mT/m)