International Journal on Magnetic Particle Imaging
Vol 8 No 1 Suppl 1 (2022): Int J Mag Part Imag
https://doi.org/10.18416/IJMPI.2022.2203075

Proceedings Articles

Drive and receive coil design for a human-scale MPI system

Main Article Content

Eli Mattingly  (Massachusetts Institute of Technology), Erica Mason (Massachusetts General Hospital), Monika Sliwiak  (Massachusetts General Hospital), Lawrence L Wald  (Harvard Medical School Massachusetts General Hospital)

Abstract

Scaling MPI imaging hardware to image a human head presents challenges for the primary drive and receive coils. The larger imaging volume necessitates increased inductance, power delivery, and large physical sizes. Here, we present human-head scale drive and receive solenoid coils in a split gradiometer configuration designed for a mechanically-rotating field-free line MPI system. The design efficiency allows for 8mT drive fields (at ∼26 kHz) from the water-cooled drive coil using an amplifier providing 21 A RMS and ∼120 V RMS into the drive filter. The geometric decoupling between the drive and Rx coil of the gradiometer pair is -52 dB.

Article Details

References

[1] M. Graeser, T. Knopp, M. Grüttner, T. F. Sattel, and T. M. Buzug.
Analog receive signal processing for magnetic particle imaging.
Medical Physics, 40(4), 2013, doi:10.1118/1.4794482.
[2] D. Meeker, Finite Element Method Magnetics Version 4.2 User’s
Manual, 2015.
[3] D. J. Zigrang and N. D. Sylvester. A review of explicit friction factor
equations. Journal of Energy Resources Technology, Transactions of
the ASME, 107(2):280–283, 1985, doi:10.1115/1.3231190.
[4] J. Schumacher, A. Malhotra, K. Gräfe, and T. M. Buzug. Highly
symmetric filter for a fully differential receive chain. International
Journal on Magnetic Particle Imaging, 6(2):1–3, 2020,
doi:10.18416/IJMPI.2020.2009031.
[5] B. Zheng, P.W. Goodwill, N.Dixit,D. Xiao,W. Zhang, B. Gunel, K. Lu,
G. C. Scott, and S. M. Conolly. Optimal Broadband NoiseMatching
to Inductive Sensors: Application to Magnetic Particle Imaging.
IEEE Transactions on Biomedical Circuits and Systems, 11(5):1041–
1052, 2017, doi:10.1109/TBCAS.2017.2712566.
[6] M. Graeser, T. Knopp, P. Szwargulski, T. Friedrich, A. von Gladiss, M.
Kaul, K. M. Krishnan, H. Ittrich, G. Adam, and T. M. Buzug. Towards
Picogram Detection of Superparamagnetic Iron-Oxide Particles
Using a Gradiometric Receive Coil. Scientific Reports, 7(1):6872,
2017, doi:10.1038/s41598-017-06992-5.