International Journal on Magnetic Particle Imaging IJMPI
Vol. 12 No. 1 Suppl 1 (2026): Int J Mag Part Imag
https://doi.org/10.18416/IJMPI.2026.2603034

Proceedings Articles, ID 1008

Topology Considerations for an Iron-Core Coil Module Field Generator

Main Article Content

Fynn Foerger (1) Section for Biomedical Imaging, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; 2) Institute for Biomedical Imaging, Hamburg University of Technology, Hamburg, Germany; 3) Fraunhofer Research Institution for Individualized and Cell-based Medical Engineering IMTE, Lübeck, Germany), Eric Aderhold (Fraunhofer IMTE, Fraunhofer Research Institution for Individualized and Cell-Based Medical Engineering, Lübeck, Germany), Jan-Philipp Scheel (1) Fraunhofer IMTE, Fraunhofer Research Institution for Individualized and Cell-Based Medical Engineering, Lübeck, Germany; 2) Chair of Metrology, Universität Rostock, Rostock, Germany), Matthias Graeser (1) Fraunhofer IMTE, Fraunhofer Research Institution for Individualized and Cell-Based Medical Engineering, Lübeck, Germany; 2) Chair of Metrology, Universität Rostock, Rostock, Germany), Mandy Ahlborg (Fraunhofer IMTE, Fraunhofer Research Institution for Individualized and Cell-Based Medical Engineering, Lübeck, Germany), Tobias Knopp (1) Section for Biomedical Imaging, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; 2) Institute for Biomedical Imaging, Hamburg University of Technology, Hamburg, Germany; 3) Fraunhofer IMTE, Fraunhofer Research Institution for Individualized and Cell-Based Medical Engineering, Lübeck, Germany)

Copyright (c) 2026 Fynn Foerger, Eric Aderhold, Jan-Philipp Scheel, Matthias Graeser, Mandy Ahlborg, Tobias Knopp

Creative Commons License

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

Abstract

The selection-field generator of a Magnetic Particle Imaging (MPI) scanner is typically the system’s largest power consumer. For potential use in intensive care units, it would be highly desirable to operate MPI scanners from a standard wall outlet without dedicated high-power infrastructure. Several concepts for more efficient selection-field generation have been proposed in recent years. In this work, we propose a novel generator design based on an array of soft-iron core coils arranged at an angle around the scanner bore. This geometry reduces overall electrical power demand while enabling gradient strengths of up to 0.5 T/m. The design was simulated and optimized using magnetostatic simulations in COMSOL Multiphysics. To ensure reliable modeling of the soft-iron cores, prototype coils were built and their magnetic fields were measured, providing experimental validation of the simulation models.

Article Details

References

[1] M. Ahlborg, T. M. Buzug, and F. Wegner. 20 years of magnetic particle imaging – from patents to patients. Biochemical and Biophysical Research Communications, 781:152510, 2025, doi:https://doi.org/10.1016/j.bbrc.2025.152510.
[2] F. Foerger, M. Boberg, J. Faltinath, T. Knopp, and M. Möddel. Design and optimization of a magnetic field generator for magnetic particle imaging with soft magnetic materials. Advanced Intelligent Systems, 6(11):2400017, 2024, doi:https://doi.org/10.1002/aisy.202400017.
[3] E. Aderhold, L. Mirzojan, J.-P. Scheel, M. Ahlborg, F. Sevecke, P. Stagge, E. Kretov, T. Buzug, and M. Graeser. Thermal Considerations
Towards a Highly Flexible Multi-Core Selection and Focus Field Generator. International Journal on Magnetic Particle Imaging IJMPI, 11(1 Suppl 1), 2025, Publisher: International Journal on Magnetic Particle Imaging IJMPI. doi:10.18416/IJMPI.2025.2503019.
[4] J.-P. Scheel, E. Aderhold, J. Hamann, M. Ahlborg, and M. Graeser. Modular Spherical Magnetic Field Sensor Array. International Journal on Magnetic Particle Imaging IJMPI, 11(1 Suppl 1), 2025, Publisher: International Journal on Magnetic Particle Imaging IJMPI. doi:10.18416/IJMPI.2025.2503054.
[5] F. Thieben, F. Foerger, F. Mohn, N. Hackelberg, M. Boberg, J.-P. Scheel, M. Möddel, M. Graeser, and T. Knopp. System characterization of a human-sized 3D real-time magnetic particle imaging scanner for cerebral applications. Communications Engineering, 3(1):47, 2024, doi:10.1038/s44172-024-00192-6.

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