Work

Topology Considerations for an Iron-Core Coil Module Field Generator

Year: 2025

Type: article

Abstract: The selection-field generator of a Magnetic Particle Imaging (MPI) scanner is typically the system’s largest power consumer. For potential use in intensive care units, it would be highly desirable to operate MPI scanners from a standard wall outlet without dedicated high-power infrastructure. Several concepts for more efficient selection-field generation have been proposed in recent years. In this work, we propose a novel generator design based on an array of soft-iron core coils arranged at an angle around the scanner bore. This geometry reduces overall electrical power demand while enabling gradient strengths of up to 0.5 T/m. The design was simulated and optimized using magnetostatic simulations in COMSOL Multiphysics. To ensure reliable modeling of the soft-iron cores, prototype coils were built and their magnetic fields were measured, providing experimental validation of the simulation models.

Source: International journal on magnetic particle imaging

DOI: 10.18416/ijmpi.2026.2603034

Authors: Foerger, Fynn, Aderhold, Eric, Scheel, Jan-Philipp, Graeser, Matthias, Ahlborg, Mandy, Knopp, Tobias

Institutions: University Medical Center Hamburg-Eppendorf, Fraunhofer-Einrichtung für Individualisierte Medizintechnik, Hamburg University of Technology, University of Rostock

Language: English

Topic: Characterization and Applications of Magnetic Nanoparticles

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

OpenAlex ID: W7138991277

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