International Journal on Magnetic Particle Imaging IJMPI
Vol. 10 No. 1 Suppl 1 (2024): Int J Mag Part Imag
https://doi.org/10.18416/IJMPI.2024.2403021

Proceedings Articles

Trade-off between power consumption and receive signal strength for inductively coupled transmit-receive circuits in MPI

Main Article Content

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

Copyright (c) 2024 Fabian Mohn, Fynn Foerger, Florian Thieben, Martin Möddel, Tobias Knopp, Matthias Graeser

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This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

The signal chain of a Magnetic Particle Imaging system can be designed to include a dedicated receive-only coil or to combine transmit and receive coils. More common are circuits with separate transmit and receive chains, using dedicated receive coil(s) that cancel the excitation feedthrough. However, combined transmit-receive systems may prove to have several benefits, such as reducing the system complexity, providing a lower resistive noise contribution due to larger copper cross-section, facilitating a transition from 1D to multidimensional signal generation and acquisition, and implementing an embedded band-stop filter. In this work, a matching condition that governs
inductors for resonant combined transmit-receive systems is investigated. To tap the signal, a compromise between the obtained signal strength and power consumption is considered, caused by the chosen circuit topology, that balances both signal loss and power consumption at a -3 dB benchmark.

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