International Journal on Magnetic Particle Imaging IJMPI
Vol. 10 No. 1 Suppl 1 (2024): Int J Mag Part Imag

Short Abstracts

Single-Shot Magnetic Field Measurements for MPI

Main Article Content

Fynn Foerger (Uniklinikum Hamburg Eppendorf), Niklas Hackelberg (UKE Hamburg), Marija Boberg (UKE Hamburg), Martin Möddel (UKE Hamburg), Florian Thieben , Fabian Mohn (UKE Hamburg), Tobias Knopp (UKE Hamburg)


Magnetic field measurements play a central role in Magnetic Particle Imaging (MPI). However, their determination is often a time-consuming process that involves sequentially scanning a given volume at predefined locations with a single magnetic field sensor. Therefore, an extensive amount of measurements is required to accurately characterize magnetic field generators, particularly those utilizing non-linear field generation processes. In this work, we introduce a single-shot magnetic field measurement system capable of capturing magnetic fields within a sphere with a 9 cm diameter at a measurement rate of 10 Hz. In comparison, a similar measurement conducted with a single 3D Hall probe moved by a robot previously took 4 min per volume measurement. We present magnetic field measurements of static MPI fields and characterize the accuracy of the single-shot measurement system. In addition, we discuss limitations on the field shapes that can be accurately measured.

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