[191080] |
Title: Ellipsoidal Harmonic Expansions for Efficient Approximation of Magnetic Fields in Medical Imaging. |
Written by: K. Scheffler, L. Meyn, F. Foerger, M. Boberg, M. Möddel, and T. Knopp |
in: <em>International Journal on Magnetic Particle Imaging</em>. (2024). |
Volume: <strong>10</strong>. Number: (1 Suppl 1), |
on pages: 1-4 |
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DOI: 10.18416/IJMPI.2024.2403006 |
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Note: inproceedings, magneticfield
Abstract: Exact knowledge on the magnetic fields used in tomographic imaging systems is important for accurate sequence planning and model-based image reconstruction in existing devices. It is common to measure the magnetic fields on a small subset of points and use spherical harmonics to approximate the fields inside a spherical region. However, most scanner bores could be better filled using a cylindrical or ellipsoidal region. In this work, we present the application of ellipsoidal harmonics for efficient approximation of a typical magnetic field in magnetic particle imaging.