000K  utf8
0100  1843255839
1100  2022$c2022-03-21
1500  eng
2051  10.18416/IJMPI.2022.2203083
3000  Dutz, Silvio
3010  Kosch, Olaf
3010  Mattern, Anne
3010  Radon, Patricia
3010  Tauber, Dustin
3010  Wiekhorst, Frank
4000  Influence of magnetic nanoparticles interactions on their magnetic particle imaging performance  [Dutz, Silvio]
4060  3 Seiten
4209  Abstract: The here presented study investigated the influence of magnetic particle-particle interactions within the MPI tracer MNP on the imaging performance of the tracers. To realize a proper separation and to increase the distances between the individual tracer MNP (which results in reduced particle-particle interactions), the MNP were diluted by non-magnetic SiO2 spacers in the nanometer range. The obtained MNP/SiO2 mixtures were characterized and used to build up measurement phantoms by embedding the mixture into a long-term stable polymer matrix. In MPS and MPI measurements it was found that reduction of the magnetic interactions encompassed by increasing the MNP distances leads for the tested tracer system to a weaker decrease of higher harmonics in the MPS spectra after immobilization of the particles and thereby, a higher spatial MPI resolution can be achieved.
4950  https://doi.org/10.18416/IJMPI.2022.2203083$xR$3Volltext$534
4961  http://uri.gbv.de/document/gvk:ppn:1843255839
5051  530