Online submillimeter three dimensional imaging of magnetic and paramagnetic contaminants flow rate in multiphase flow pipelines using magnetic particle imaging technique

2018 ◽  
Author(s):  
K. Bin Said ◽  
M. Ihsane
Keyword(s):  
Multiphase Flow ◽  
Flow Rate ◽  
Magnetic Particle ◽  
Imaging Technique ◽  
Three Dimensional ◽  
Three Dimensional Imaging ◽  
Magnetic Particle Imaging ◽  
Particle Imaging

scholarly journals Magnetic particle imaging of particle dynamics in complex matrix systems

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Sebastian Draack ◽  
Meinhard Schilling ◽  
Thilo Viereck
Keyword(s):  
Magnetic Particle ◽  
Imaging Modality ◽  
Three Dimensional ◽  
Local Environment ◽  
Relaxation Mechanism ◽  
Harmonic Spectrum ◽  
Magnetic Particle Imaging ◽  
Matrix Interactions ◽  
Tracer Distribution ◽  
Particle Imaging

Abstract Magnetic particle imaging (MPI) is a young imaging modality for biomedical applications. It uses magnetic nanoparticles as a tracer material to produce three-dimensional images of the spatial tracer distribution in the field-of-view. Since the tracer magnetization dynamics are tied to the hydrodynamic mobility via the Brownian relaxation mechanism, MPI is also capable of mapping the local environment during the imaging process. Since the influence of viscosity or temperature on the harmonic spectrum is very complicated, we used magnetic particle spectroscopy (MPS) as an integral measurement technique to investigate the relationships. We studied MPS spectra as function of both viscosity and temperature on model particle systems. With multispectral MPS, we also developed an empirical tool for treating more complex scenarios via a calibration approach. We demonstrate that MPS/MPI are powerful methods for studying particle-matrix interactions in complex media.

scholarly journals A multi-purpose phantom kit for magnetic particle imaging

2021 ◽  
Vol 7 (2) ◽  
pp. 319-322
Author(s):  
Norbert Löwa ◽  
Rebecca Hoffmann ◽  
Dirk Gutkelch ◽  
Olaf Kosch ◽  
Silvio Dutz ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Spatial Distribution ◽  
Magnetic Nanoparticles ◽  
Magnetic Particle ◽  
Imaging Technique ◽  
Magnetic Particle Imaging ◽  
Particle Imaging ◽  
Scenario Testing ◽  
Future Reference

Abstract Phantoms are essential tools for the development and characterization of Magnetic Particle Imaging (MPI), an imaging technique that can quantitatively map the spatial distribution of magnetic nanoparticles (MNP). The objective of this study was to develop and validate a modular MPI phantom kit with high versatility for platform-independent quality assurance and the assembling of defined geometries in MPI. It was shown that the developed MPI phantom kit can be used for both application scenario testing and quality assurance in MPI which provides the basis for future reference phantoms to directly compare existing scanners within the MPI community.

Engineering of magnetic nanoparticles as magnetic particle imaging tracers

2021 ◽  
Author(s):  
Chang Lu ◽  
Linbo Han ◽  
Joanna Wang ◽  
Jiacheng Wan ◽  
Guosheng Song ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Spatial Resolution ◽  
Magnetic Particle ◽  
Imaging Technique ◽  
Non Invasive ◽  
Magnetic Particle Imaging ◽  
Particle Imaging

Magnetic particle imaging (MPI) has recently emerged as a promising non-invasive imaging technique. Engineering of magnetic nanoparticles (MNPs) is effective ways to enhance MPI sensitivity and spatial resolution.

scholarly journals Magnetic particle imaging in vascular medicine

2018 ◽  
Vol 3 (3) ◽  
pp. 179-192 ◽  
Author(s):  
Anna C. Bakenecker ◽  
Mandy Ahlborg ◽  
Christina Debbeler ◽  
Christian Kaethner ◽  
Thorsten M. Buzug ◽  
...  
Keyword(s):  
Real Time ◽  
Magnetic Particle ◽  
Brain Injuries ◽  
Imaging Technique ◽  
High Temporal Resolution ◽  
Vascular Medicine ◽  
Real Time Imaging ◽  
Interventional Imaging ◽  
Magnetic Particle Imaging ◽  
Particle Imaging

AbstractMagnetic particle imaging (MPI) is a new medical imaging technique that enables three-dimensional real-time imaging of a magnetic tracer material. Although it is not yet in clinical use, it is highly promising, especially for vascular and interventional imaging. The advantages of MPI are that no ionizing radiation is necessary, its high sensitivity enables the detection of very small amounts of the tracer material, and its high temporal resolution enables real-time imaging, which makes MPI suitable as an interventional imaging technique. As MPI is a tracer-based imaging technique, functional imaging is possible by attaching specific molecules to the tracer material. In the first part of this article, the basic principle of MPI will be explained and a short overview of the principles of the generation and spatial encoding of the tracer signal will be given. After this, the used tracer materials as well as their behavior in MPI will be introduced. A subsequent presentation of selected scanner topologies will show the current state of research and the limitations researchers are facing on the way from preclinical toward human-sized scanners. Furthermore, it will be briefly shown how to reconstruct an image from the tracer materials’ signal. In the last part, a variety of possible future clinical applications will be presented with an emphasis on vascular imaging, such as the use of MPI during cardiovascular interventions by visualizing the instruments. Investigations will be discussed, which show the feasibility to quantify the degree of stenosis and diagnose strokes and traumatic brain injuries as well as cerebral or gastrointestinal bleeding with MPI. As MPI is not only suitable for vascular medicine but also offers a broad range of other possible applications, a selection of those will be briefly presented at the end of the article.

scholarly journals Stability analysis of ferrofluids

2015 ◽  
Vol 1 (1) ◽  
pp. 10-13
Author(s):  
Duda Katharina ◽  
Lüdtke-Buzug Kerstin
Keyword(s):  
Particle Size ◽  
Magnetic Particle ◽  
Imaging Technique ◽  
Medical Application ◽  
Iron Core ◽  
Shell Material ◽  
Superparamagnetic Iron Oxides ◽  
Magnetic Particle Imaging ◽  
The Stability ◽  
Particle Imaging

AbstractSuperparamagnetic iron oxides (SPIOs) are used as tracer for the new imaging technique Magnetic Particle Imaging. The stability of ferrofluids for medical application has a great importance, in addition to the particle size. The shell material, which protects the iron core prior from agglomeration and sedimentation, can be degraded by various processes. Another important aspect of stability is the constant performance of magnetisation. Therefore, the measurement of the magnetisation of the particles must be controlled in order to ensure the stability of the samples.

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