Corpus ID: 235436271

Modeling the Magnetization Dynamics for Large Ensembles of Immobilized Magnetic Nanoparticles in Multi-dimensional Magnetic Particle Imaging

@inproceedings{Albers2021ModelingTM,
  title={Modeling the Magnetization Dynamics for Large Ensembles of Immobilized Magnetic Nanoparticles in Multi-dimensional Magnetic Particle Imaging},
  author={H. Albers and Tobias Knopp and Martin Moddel and M. Boberg and Tobias Kluth},
  year={2021}
}
Magnetic nanoparticles (MNPs) play an important role in biomedical applications including imaging modalities such as magnetic resonance imaging (MRI) and magnetic particle imaging (MPI). The latter one exploits the non-linear magnetization response of a large ensemble of magnetic nanoparticles to magnetic fields which allows determining the spatial distribution of the MNP concentration from measured voltage signals. The image-to-voltage mapping is linear and described by a system matrix… Expand

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References

SHOWING 1-10 OF 54 REFERENCES
Simultaneous Magnetic Particle Imaging and Navigation of large superparamagnetic nanoparticles in bifurcation flow experiments
Magnetic Particle Imaging (MPI) has been successfully used to visualize the distribution of superparamagnetic nanoparticles within 3D volumes with high sensitivity in real time. Since the magneticExpand
Mathematical models for magnetic particle imaging
Magnetic particle imaging (MPI) is a relatively new imaging modality. The nonlinear magnetization behavior of nanoparticles in an applied magnetic field is employed to reconstruct an image of theExpand
Mixed Brownian alignment and Néel rotations in superparamagnetic iron oxide nanoparticle suspensions driven by an ac field.
TLDR
Experiments show differences between the magnetization dynamics of certain particles in frozen and melted states and emphasize that precise particle-specific characterization through experiments and nonlinear simulations is necessary to predict dynamics in solution and optimize their behavior for emerging biomedical applications. Expand
Effect of easy axis alignment on dynamic magnetization of immobilized and suspended magnetic nanoparticles
Magnetic nanoparticles (MNPs) have been widely studied for use in biomedical applications such as magnetic particle imaging and magnetic hyperthermia. We studied the effect of easy axis alignment onExpand
Characterization of magnetically fractionated magnetic nanoparticles for magnetic particle imaging
We have characterized fractionated magnetic nanoparticles (MNPs) for magnetic particle imaging. Original Ferucarbotran particles were magnetically divided into three fractionated MNPs called MS1,Expand
Biomedical Nanomagnetics: A Spin Through Possibilities in Imaging, Diagnostics, and Therapy
  • K. Krishnan
  • Physics, Medicine
  • IEEE Transactions on Magnetics
  • 2010
TLDR
This paper discusses targeted drug delivery and triggered release, novel contrast agents for magnetic resonance imaging, cancer therapy using magnetic fluid hyperthermia, in vitro diagnostics and the emerging magnetic particle imaging technique that is quantitative and sensitive enough to compete with established imaging methods. Expand
First experimental evidence of the feasibility of multi-color magnetic particle imaging.
TLDR
Experimental evidence of the separability of signals from different particle types and aggregation states using a 'multi-color' reconstruction approach is presented and several mechanisms are discussed that may form the basis for successful signal separation. Expand
Micro-magnetic simulation study on the magnetic particle imaging performance of anisotropic mono-domain particles.
TLDR
This study presents the first micro-magnetic ab initio simulation of spectra of anisotropic particles with different core diameters in an oscillating magnetic field at 25 and 100 kHz and finds that the MPI signal strongly depends on the anisotropy of the magnetic core. Expand
AC Magnetization of Immobilized Magnetic Nanoparticles With Different Degrees of Parallel Alignment of Easy Axes
Magnetic nanoparticles (MNPs) are physically immobilized in some biomedical applications. In this case, dynamic ac magnetization that determines MNPs’ performance has strong dependence on theExpand
Analysis of a 3-D System Function Measured for Magnetic Particle Imaging
TLDR
This work presents a detailed analysis of a measured SF to give experimental evidence that3-D MPI encodes information using a set of 3-D spatial patterns or basis functions that is stored in the SF. Expand
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