Cape Town - 2026 ISMRM-ISMRT Annual Meeting and Exhibition
9 May 2026 – 14 May 2026 · Cape Town, South Africa
368-06-004 ISMRM Abstract

A current sensor gradient impulse response function for concurrent higher-order field monitoring

Primary: Physics & Engineering - System Imperfections
Secondary: Physics & Engineering - Gradients
368-06-004 · Novel Gradients · Monday, 11 May, 5:05 PM–6:00 PM · Digital Posters Row I
Keywords: Eddy current Gradient impulse response function Field camera Gradient Power Amplifiers Higher order field monitoring
Accepted
Matthew A McCready 1,2, Zachary Shah1, Kawin Setsompop3, John Pauly1, Adam B Kerr1,2
1Department of Electrical Engineering, Stanford University, Stanford, United States of America
2Center for Cognitive and Neurobiological Imaging, Stanford University, Stanford, United States of America
3Department of Radiology, Stanford University, Stanford, United States of America
Presenting Author: Matthew A McCready

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References

1. S. J. Vannesjo et al., “Gradient system characterization by impulse response measurements with a dynamic field camera,” Magnetic Resonance in Medicine, vol. 69, no. 2, pp. 583–593, 2013. doi:10.1002/mrm.24263. [doi]
2. M. T. Alley, G. H. Glover, and N. J. Pelc, “Gradient characterization using a fourier-transform technique,” Magnetic Resonance in Medicine, vol. 39, no. 4, pp. 581–587, 1998. doi:10.1002/mrm.1910390411. [doi]
3. N. O. Addy, H. H. Wu, and D. G. Nishimura, “Simple method for mr gradient system characterization and k-space trajectory estimation,” Magnetic Resonance in Medicine, vol. 68, no. 1, pp. 120–129, 2012. doi:10.1002/mrm.23217. [doi]
4. S. J. Vannesjo et al., “Image reconstruction using a gradient impulse response model for trajectory prediction,” Magnetic Resonance in Medicine, vol. 76, no. 1, pp. 45–58, 2016. doi:10.1002/mrm.25841. [doi]
5. B. J. Wilm, C. Barmet, M. Pavan, and K. P. Pruessmann, “Higher order reconstruction for mri in the presence of spatiotemporal field perturbations,” Magnetic Resonance in Medicine, vol. 65, no. 6, pp. 1690–1701, 2011. doi:10.1002/mrm.22767. [doi]
6. D. M. Spielman and J. M. Pauly, “Spiral imaging on a small-bore system at 4.7t,” Magnetic Resonance in Medicine, vol. 34, no. 4, pp. 580–585, 1995. doi:10.1002/mrm.1910340414. [doi]
7. J. Rahmer, I. Schmale, P. Mazurkewitz, O. Lips, and P. Börnert, “Non-cartesian k-space trajectory calculation based on concurrent reading of the gradient amplifiers’ output currents,” Magnetic Resonance in Medicine, vol. 85, no. 6, pp. 3060–3070, 2021. doi:10.1002/mrm.28725. [doi]
8. J. Nussbaum, B. E. Dietrich, B. J. Wilm, and K. P. Pruessmann, “Thermal variation in gradient response: Measurement and modeling,” Magnetic Resonance in Medicine, vol. 87, no. 5, pp. 2224–2238, 2022. doi:10.1002/mrm.29123. [doi]

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http://echo.ismrm.org/p/ISMRM2026/368-06-004