International Journal on Magnetic Particle Imaging IJMPI
Vol. 11 No. 1 Suppl 1 (2025): Int J Mag Part Imag
https://doi.org/10.18416/IJMPI.2025.2503069

Proceedings Articles

Asymmetric cancellation coil array for surface receiving coils in open-sided FFL MPI

Main Article Content

Wenying Yang (Beihang University), Guanghui Li (1）Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, School of Engineering Medicine,Beihang University, Beijing, China ；2）Key Laboratory of Big Data-Based Precision Medicine (Beihang University), Ministry of Industry and Information Technology of the People’s Republic of China, Beijing, 100191, China), Siao Lei (1）Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, School of Engineering Medicine,Beihang University, Beijing, China ；2）Key Laboratory of Big Data-Based Precision Medicine (Beihang University), Ministry of Industry and Information Technology of the People’s Republic of China, Beijing, 100191, China), Yu An (1）Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, School of Engineering Medicine,Beihang University, Beijing, China ；2）Key Laboratory of Big Data-Based Precision Medicine (Beihang University), Ministry of Industry and Information Technology of the People’s Republic of China, Beijing, 100191, China), Zhenchao Tang (1）Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, School of Engineering Medicine,Beihang University, Beijing, China ；2）Key Laboratory of Big Data-Based Precision Medicine (Beihang University), Ministry of Industry and Information Technology of the People’s Republic of China, Beijing, 100191, China), Jie Tian (1）Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, School of Engineering Medicine,Beihang University, Beijing, China ；2）Key Laboratory of Big Data-Based Precision Medicine (Beihang University), Ministry of Industry and Information Technology of the People’s Republic of China, Beijing, 100191, China；3）CAS Key Laboratory of Molecular Imaging, Institute of Automation, Chinese Academy of Sciences, Beijing, China)

Copyright (c) 2025 Wenying Yang, Guanghui Li, Siao Lei, Yu An, Zhenchao Tang, Jie Tian

Creative Commons License

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

Abstract

Magnetic particle imaging (MPI), as an emerging non-invasive molecular imaging technology, utilizes the nonlinear magnetic response properties of superparamagnetic iron oxide nanoparticles for imaging. Compared to body coils, surface coils provide higher filling factor, which is promising to enhance the receiving sensitivity. The field-free line MPI (FFL MPI) is rotated at multiple angles for reconstructing particle concentration images. Single cancellation coil for surface coil may be reduced in accuracy at different angles due to imperfections in the magnetic field or mechanical errors. In this paper we design an asymmetric cancellation array based on an open-sided FFL MPI system for improving the cancellation failure problem at different angles. The results show that the array cancellation is superior to the individual cancellation.

Article Details

References

[1] Gleich B, Weizenecker J. Tomographic imaging using the nonlinear response of magnetic particles[J]. Nature, 2005, 435(7046): 1214-1217.
[2] Matthias Graeser et al. Design of a head coil for high resolution mouse brain perfusion imaging using magnetic particle imaging, Phys. Med. Biol. 65 235007,2020.
[3] J. He et al., "Sequential Scan-Based High-Resolution 3-D Open-Sided Magnetic Particle Imaging System," in IEEE Transactions on Instrumentation and Measurement, vol. 73, pp. 1-12, Art no. 4007112, 2024.

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