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.2025.2503040

Proceedings Articles

Experimental Study on Efficient Field Measurement using Ellipsoidal Harmonics

Main Article Content

Konrad Scheffler (1) University Medical Center Hamburg-Eppendorf, Section for Biomedical Imaging; 2) Technical University Hamburg, Institute for Biomedical Imaging), Fynn Foerger (1) University Medical Center Hamburg-Eppendorf, Section for Biomedical Imaging; 2) Technical University Hamburg, Institute for Biomedical Imaging), Tobias Knopp (1) University Medical Center Hamburg-Eppendorf, Section for Biomedical Imaging; 2) Technical University Hamburg, Institute for Biomedical Imaging; 3) Fraunhofer Research Institution for Individualized and Cell-based Medical Engineering IMTE Lübeck)

Copyright (c) 2025 Konrad Scheffler, Fynn Foerger, Tobias Knopp

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

Abstract

This work demonstrates the application of ellipsoidal harmonic expansions for magnetic field representation in Magnetic Particle Imaging (MPI) using measured data. While previous studies focused on simulated fields, we validate the method with field data acquired from a selection field generator of an MPI head imaging system using an ellipsoidal t-design. The approach is validated by comparing the harmonic expansion results to dense principal axis measurements, confirming accurate field characterization. This study highlights the potential of ellipsoidal harmonics to improve the speed and accuracy of magnetic field measurements and representation in MPI.

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