Cape Town - 2026 ISMRM-ISMRT Annual Meeting and Exhibition
9 May 2026 – 14 May 2026 · Cape Town, South Africa
568-02-003 ISMRM Abstract

Gradient-safe GIRF estimation (gsGIRF) by chirp design based on the acoustic response function

Primary: Physics & Engineering - System Imperfections
Secondary: Physics & Engineering - Gradients
568-02-003 · System Imperfections and Field Monitoring · Wednesday, 13 May, 9:15 AM–10:10 AM · Digital Posters Row I
Keywords: System Imperfections: Measurement & Correction Gradient safety Gradient impulse response function Mechanical resonances Transfer function
Accepted
Onur Erbil1, Rüdiger Brühl1, Sebastian Schmitter1,2,3, Hannes Dillinger 1
1Physikalisch-Technische Bundesanstalt (PTB), Braunschweig and Berlin, Berlin, Germany
2Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
3Center for Magnetic Resonance Research (CMRR), University of Minnesota, Minneapolis, United States of America
Presenting Author: Hannes Dillinger

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References

1. Vannesjo SJ, Graedel NN, Kasper L, et al. Image reconstruction using a gradient impulse response model for trajectory prediction. Magn Reson Med. 2016;76(1):45-58. doi:10.1002/mrm.25841 [doi]
2. Vannesjo SJ, Haeberlin M, Kasper L, et al. Gradient system characterization by impulse response measurements with a dynamic field camera. Magn Reson Med. 2013;69(2):583-593. doi:10.1002/mrm.24263 [doi]
3. Dillinger H, Kozerke S, Guenthner C. Direct comparison of gradient Fidelity and acoustic noise of the same MRI system at 3 T and 0.75 T. Magn Reson Med. 2022;88(4):1937-1947. doi:10.1002/mrm.29312 [doi]
4. Winkler SA, Schmitt F, Landes H, et al. Gradient and shim technologies for ultra high field MRI. Neuroimage. 2018;168(November 2016):59-70. doi:10.1016/j.neuroimage.2016.11.033 [doi]
5. Rahmer J, Mazurkewitz P, Börnert P, Nielsen T. Rapid acquisition of the 3D MRI gradient impulse response function using a simple phantom measurement. Magn Reson Med. 2019 Dec;82(6):2146-2159. doi: 10.1002/mrm.27902. Epub 2019 Jul 18. PMID: 31321818. [doi] [pmid]
6. Duyn JH, Yang Y, Frank JA, Van Der Veen JW. Simple Correction Method for k-Space Trajectory Deviations in MRI. J Magn Reson. 1998;132(1):150-153. doi:10.1006/jmre.1998.1396 [doi]

Cite this abstract

http://echo.ismrm.org/p/ISMRM2026/568-02-003