568-02-010 ISMRM Abstract

Concomitant field characterization by field probes in an H-shaped portable low-field system

Primary: Physics & Engineering - Low-Field MRI

Secondary: Physics & Engineering - System Imperfections

568-02-010 · System Imperfections and Field Monitoring · Wednesday, 13 May, 9:15 AM–10:10 AM · Digital Posters Row I

Keywords: Low-Field MRI System Imperfections: Measurement & Correction Concomitant fields Field probe Low-field characterization

Accepted

Suen Chen ¹, Philip K Lee¹, Changyue Wang¹, Haifeng Lai², Shiwei Yang², Zhen Ji¹, Zhiyong Zhang¹

¹Shanghai Jiao Tong University, Shanghai, China

²Shanghai Point Imaging Healthcare Co., Ltd, SHANGHAI, China

Presenting Author: Suen Chen

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References

1. Bernstein, M. A., Zhou, X. J., Polzin, J. A., et al. "Concomitant gradient terms in phase contrast MR: analysis and correction." Magnetic resonance in medicine 39.2 (1998): 300-308. doi: https://doi.org/10.1002/mrm.1910390218 [doi]

2. de Vos, Bart, Rob F. Remis, and Andrew G. Webb. "Characterization of concomitant gradient fields and their effects on image distortions using a low‐field point‐of‐care Halbach‐based MRI system." Magnetic Resonance in Medicine 91.2 (2024): 828-841. doi: https://doi.org/10.1002/mrm.29879 [doi]

3. Qiu, Y., Dai, K., Zhong, S., et al. "Spatiotemporal encoding MRI in a portable low‐field system." Magnetic Resonance in Medicine 92.3 (2024): 1011-1021. doi: https://doi.org/10.1002/mrm.30104 [doi]

4. Chen, S., Qiu, Y., Lee, P. K., et al. “ A fast eddy currents correction method based on field probe in portable low-field MRI”; The ISMRM Annual Meeting 2025, 10-15 May 2025: 0493. doi: https://doi.org/10.58530/2025/0493 [doi]

5. N. De Zanche, C. Barmet, J. A. Nordmeyer‐Massner, et al. “NMR probes for measuring magnetic fields and field dynamics in MR systems,” Magnetic Resonance in Medicine 60.1 (2008): 176-186. doi: https://doi.org/10.1002/mrm.21624 [doi]

6. Lee, P. K., Qiu, Y., Wang, C., et al. "Multiband Fast Spin Echo on portable low‐field systems.” Magnetic Resonance in Medicine, 2025. doi: https://doi.org/10.1002/mrm.70036 [doi]

7. Le Roux, Patrick. "Non-CPMG fast spin echo with full signal." Journal of Magnetic Resonance 155.2 (2002): 278-292. doi: https://doi.org/10.1006/jmre.2002.2523 [doi]

8. Tao, S., Weavers, P. T., Trzasko, J. D., et al. "Gradient pre‐emphasis to counteract first‐order concomitant fields on asymmetric MRI gradient systems." Magnetic resonance in medicine 77.6 (2017): 2250-2262. doi: https://doi.org/10.1002/mrm.26315 [doi]

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http://echo.ismrm.org/p/ISMRM2026/568-02-010