A pole-less C-magnet with permanent magnets and concentric rings reaches 0.2 T with 1.43 mT inhomogeneity over a 20 cm DSV at 590 kg total weight.
Low-field MRI: An MR physics perspective
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Post-elimination of EMI via external sensing coils in LF-MRI necessarily produces higher residual contamination than optimal hardware-based pre-elimination.
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Design and Optimization of a Pole-less 0.2 T C-Type MRI Magnet
A pole-less C-magnet with permanent magnets and concentric rings reaches 0.2 T with 1.43 mT inhomogeneity over a 20 cm DSV at 590 kg total weight.
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Comment on electromagnetic noise cancellation in low-field MRI systems (arXiv:2509.05955v1, 2406.17804v3, 2210.06730v2, and related works)
Post-elimination of EMI via external sensing coils in LF-MRI necessarily produces higher residual contamination than optimal hardware-based pre-elimination.