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Influence of System Matrix Concentration and Frequency Selection on Reconstructed MPI Signals

Sathurya Jegatheeswaran*, Hanna Meenen, Thorsten M. Buzug, Ksenija Gräfe

*Korrespondierende/r Autor/-in für diese Arbeit

Abstract

In Magnetic Particle Imaging (MPI), the system matrix (SM) characterizes the spatial encoding properties of the imaging system and the magnetic nanoparticle response. Ideally, for linear particle magnetization behavior, the concentration at which the SM is measured should not affect the reconstructed image. In this study, two SMs recorded with tracer concentrations of 8.5 mg(Fe)/ml and 1.92 mg(Fe)/ml were investigated. We show that, although the same SM is used, reconstruction discrepancies occur when the frequency coverage differs. We therefore propose to determine the usable frequency components based on the lower concentration SM to ensure a consistent reconstruction basis.

OriginalspracheEnglisch
Aufsatznummer2603026
ZeitschriftInternational Journal on Magnetic Particle Imaging
Jahrgang12
Ausgabenummer1
ISSN2365-9033
DOIs
PublikationsstatusVeröffentlicht - 2026

Fördermittel

Research funding: This project is supported by the Damp Stiftung (Grant Number 2022-08). Travel funding: This work was supported by the COST Action NexMPI (Grant Number CA23132).

TrägerTrägernummer
Damp Stiftung2022-08
European Cooperation in Science and TechnologyCA23132

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