International Journal on Magnetic Particle Imaging IJMPI
Vol. 8 No. 1 Suppl 1 (2022): Int J Mag Part Imag
https://doi.org/10.18416/IJMPI.2022.2203065

Proceedings Articles

Low-Power Iron Selection and Focus Field Generator

Main Article Content

Fynn Foerger (UKE Hamburg), Marija Boberg (Section for Biomedical Imaging, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Institute for Biomedical Imaging, Hamburg University of Technology, Hamburg, Germany), Martin Möddel (Section for Biomedical Imaging, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Institute for Biomedical Imaging, Hamburg University of Technology, Hamburg, Germany), Jan-Philipp Scheel (Institute for Biomedical Imaging, Hamburg University of Technology, Hamburg, Germany), Matthias Graeser (Section for Biomedical Imaging, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Institute for Biomedical Imaging, Hamburg University of Technology, Hamburg, Germany Fraunhofer Research Institute for Individualized and Cell-based Medicine, Lübeck, Germany; Institute of Medical Engineering, University of Lübeck, Lübeck, Germany), Tobias Knopp (Section for Biomedical Imaging, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Institute for Biomedical Imaging, Hamburg University of Technology, Hamburg, Germany)

Copyright (c) 2022 Fynn Foerger, Marija Boberg, Martin Möddel, Jan-Philipp Scheel, Matthias Graeser, Tobias Knopp

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

Abstract

A major issue for human-sized Magnetic Particle Imaging (MPI) scanners is the generation of sufficiently large magnetic gradient fields. By taking advantage of the field amplification properties of soft iron, a considerable amount of power can be saved. In this work, an optimized selection and focus field generator is presented, that can generate flexible and high gradient fields at comparatively low power consumption. Coil spacing and possible field-free-point positions are similar to conventional MPI scanners designed with air coils, but with significantly less demands on infrastructure and cooling design. The optimization process is discussed and first field measurements are presented.

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