International Journal on Magnetic Particle Imaging
Vol 8 No 1 Suppl 1 (2022): Int J Mag Part Imag
https://doi.org/10.18416/IJMPI.2022.2203014

Proceedings Articles

Heat it up: Thermal stabilization by active heating to reduce impedance drifts in capacitive matched networks

Main Article Content

Florian Thieben  (Section for Biomedical Imaging, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Institute for Biomedical Imaging, Hamburg University of Technology, Hamburg, Germany), Fynn Foerger  (Section for Biomedical Imaging, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Institute for Biomedical Imaging, Hamburg University of Technology, Hamburg, Germany), Fabian Mohn  (Section for Biomedical Imaging, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Institute for Biomedical Imaging, Hamburg University of Technology, Hamburg, Germany), Florian Sevecke  (Institute for Biomedical Imaging, Hamburg University of Technology, Hamburg, Germany; Fraunhofer Research Institute for Individualized and Cell-based Medicine, Lübeck, Germany; Institute of Medical Engineering, University of Lübeck, Lübeck, Germany), Tobias Knopp  (Section for Biomedical Imaging, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Institute for Biomedical Imaging, Hamburg University of Technology, Hamburg, Germany), Matthias Graeser  (Section for Biomedical Imaging, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Institute for Biomedical Imaging, Hamburg University of Technology, Hamburg, Germany; Fraunhofer Research Institute for Individualized and Cell-based Medicine, Lübeck, Germany; Institute of Medical Engineering, University of Lübeck, Lübeck, Germany)

Abstract

The achievable sensitivity in Magnetic Particle Imaging is not only limited by noise, but also depends on the stability of the system. Thermal dependencies of the current carrying components lead to drive-field distortions in amplitude and phase causing drifting background signals. In this work, an active capacitor heating system is developed that allows for thermal stabilization and trimming a resonance circuit to the desired frequency.

Article Details