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.2022.2203015

Proceedings Articles

Efficient 3D Drive-Field Characterization for Magnetic Particle Imaging Systems

Main Article Content

Florian Thieben (Section for Biomedical Imaging, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Institute for Biomedical Imaging, Hamburg University of Technology, Hamburg, Germany), Marija Boberg (Section for Biomedical Imaging, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; 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, Germany; Institute of Medical Engineering, University of 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 Florian Thieben, Marija Boberg, Matthias Graeser, Tobias Knopp

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

Abstract

Magnetic particle imaging uses time-dependent drive fields for signal generation, which are designed to be homogeneous in order to achieve a similar image quality all over the volume of interest. In practice, the fields are not exactly homogeneous and in turn a precise knowledge of the spatial field profile is necessary when using a model-based reconstruction approach. In this work, we propose an efficient method for the measurement and compact  representation of the drive fields using a small 3D calibration coil and solid harmonics.

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