Cape Town - 2026 ISMRM-ISMRT Annual Meeting and Exhibition
9 May 2026 – 14 May 2026 · Cape Town, South Africa
466-04-008 ISMRM Abstract

Permanent magnet arrays – understanding and addressing discrepancies between designed and measured magnetic field

Primary: Physics & Engineering - Low-Field MRI
Secondary: Physics & Engineering - System Imperfections
466-04-008 · Magnets and Shims · Tuesday, 12 May, 2:35 PM–3:30 PM · Digital Posters Row G
Keywords: System Imperfections: Measurement & Correction Permanent Magnets Array Magnetic field inhomogeneity B0 Inhomogeneity
Accepted
Koos Zevenhoven 1,2, Clarissa Z Cooley1,2, Lawrence L Wald1,2,3
1Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Charlestown, United States of America
2Harvard Medical School, Boston, United States of America
3Harvard-MIT Health Sciences and Technology, Cambridge, United States of America
Presenting Author: Koos Zevenhoven

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References

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2. A. Samardzija, K. Selvaganesan, H. Z. Zhang, H. Sun, C. Sun, Y. Ha, G. Galiana, R. T. Constable, Low-field, low-cost, point-of-care magnetic resonance imaging, Annual Review of Biomedical Engineering 26:67–91 (2024), https://doi.org/10.1146/annurev-bioeng-110122-022903 [doi]
3. A. Webb, T. O’Reilly, Tackling SNR at low-field: a review of hardware approaches for point-of-care systems, Magnetic Resonance Materials in Physics, Biology and Medicine 36:375–393 (2023), https://doi.org/10.1007/s10334-023-01100-3 [doi]
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5. W. T. Kimberly, A. J. Sorby-Adams, A. G. Webb, E. X. Wu, R. Beekman, R. Bowry, S. J. Schiff, A. de Havenon, F. X. Shen, G. Sze, P. Schaefer, J. E. Inglesias, M. S. Rosen, K. N. Sheth, Brain imaging with portable low-field MRI, Nature Reviews Bioengineering 1:617–630 (2023), https://doi.org/10.1038/s44222-023-00086-w [doi]
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8. K. C. J. Zevenhoven, S. Busch, M. Hatridge, F. Öisjöen, R. J. Ilmoniemi, J. Clarke; Conductive shield for ultra-low-field magnetic resonance imaging: Theory and measurements of eddy currents, J. Appl. Phys. 115:103902 (2014), https://doi.org/10.1063/1.4867220 [doi]
9. K. C. J. Zevenhoven, H. Dong, R. J. Ilmoniemi, J. Clarke, Dynamical cancellation of pulse-induced transients in a metallic shielded room for ultra-low-field magnetic resonance imaging, Appl. Phys. Lett. 106:034101 (2015), https://doi.org/10.1063/1.4906058 [doi]
10. M. Sliwiak, A. R. Purchase, S. E. Altman, J. Short, M. David, V. S. Klein, J. P. Stockmann, L. L. Wald, and C. Z. Cooley, Progress towards a dedicated 136 mT Portable MRI Scanner for Brain Imaging in the Neonatal ICU, Proc. Intl. Soc. Mag. Reson. Med. 33:0494 (2025), https://doi.org/10.58530/2025/0494 [doi]

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http://echo.ismrm.org/p/ISMRM2026/466-04-008