International Journal on Magnetic Particle Imaging IJMPI
Vol. 11 No. 1 Suppl 1 (2025): Int J Mag Part Imag
https://doi.org/10.18416/IJMPI.2025.2503025

Proceedings Articles

Spatial encoding with receive coils in MPI

Main Article Content

Egor Kretov (Fraunhofer Research Institution for Individualized and Cell-Based Medical Engineering IMTE), Jan-Philipp Scheel (1) Fraunhofer Research Institution for Individualized and Cell-Based Medical Engineering IMTE, Lübeck, Germany 2) Institute of Medical Engineering, University of Lübeck, Lübeck, Germany), Liana Mirzojan (1) Fraunhofer Research Institution for Individualized and Cell-Based Medical Engineering IMTE, Lübeck, Germany 2) Institute of Medical Engineering, University of Lübeck, Lübeck, Germany), Florian Sevecke (1) Fraunhofer Research Institution for Individualized and Cell-Based Medical Engineering IMTE, Lübeck, Germany 2) Institute of Medical Engineering, University of Lübeck, Lübeck, Germany), Matthias Graeser (1) Fraunhofer Research Institution for Individualized and Cell-Based Medical Engineering IMTE, Lübeck, Germany 2) Chair of Measurement Technology, University of Rostock, Rostock, Germany)

Copyright (c) 2025 Egor Kretov, Jan-Philipp Scheel, Liana Mirzojan, Florian Sevecke, Matthias Graeser

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This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

MPI techniques traditionally use gradient magnetic fields for spatial encoding. Despite their proven efficiency, these methods are power-intensive and technically challenging to implement on a human scale. In this work, we explore the potential for spatial encoding of superparamagnetic nanoparticle distributions using only a drive field and an array of receiving coils with unique spatial sensitivity profiles. We demonstrate the feasibility of this concept using a prototype 1D imaging system extended to 2D by mechanically moving the sample. The proposed approach permits high-speed gradient-free data acquisition for rapid imaging but also has some limitations in terms of penetration depth.

Article Details

References

[1] B. Gleich and J. Weizenecker. Tomographic imaging using the non-linear response of magnetic particles. Nature, 435(7046):1214–1217,
2005, doi:10.1038/nature03808.
[2] J. Weizenecker, B. Gleich, and J. Borgert. Magnetic particle imaging using a field-free line. Journal of Physics D: Applied Physics,
41(10):105009, 2008, doi:10.1088/0022-3727/41/10/105009.
[3] P. Vogel, M. A. Ruckert, P. Klauer, W. H. Kullmann, P. M.
Jakob, and V. C. Behr. Traveling wave magnetic particle imaging. IEEE Transactions on Medical Imaging, 33(2):400–407, 2014,
doi:10.1109/tmi.2013.2285472.
[4] J. Rahmer, C. Stehning, and B. Gleich. Remote magnetic actuation
using a clinical scale system. PLOS ONE, 13(3):e0193546M. Dao,
Ed., 2018, doi:10.1371/journal.pone.0193546.
[5] S. B. Trisnanto, T. Kasajima, T. Shibuya, and Y. Takemura.
Configuring magnetoresistive sensor array for head-sized magnetic particle imaging. International Journal on Magnetic Particle Imaging IJMPI, pp. Vol 9 No 1 Suppl 1 (2023), 2023,
doi:10.18416/IJMPI.2023.2303086.
[6] T. Knopp, T. F. Sattel, S. Biederer, J. Weizenecker, B. Gleich, J. Borgert,
and T. M. Buzug, Receive coil array for magnetic particle imaging, in
2011 IEEE International Symposium on Biomedical Imaging: From
Nano to Macro, 1666–1669, 2011. doi:10.1109/ISBI.2011.5872724.
[7] A. Hajiaghajani and A. Abdolali. Patterning of subwavelength
magnetic fields along a line by means of spatial spectrum: Design and implementation. IEEE Magnetics Letters, 8:1–4, 2017,
doi:10.1109/LMAG.2017.2746065.

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