International Journal on Magnetic Particle Imaging IJMPI
Vol. 12 No. 1 Suppl 1 (2026): Int J Mag Part Imag
https://doi.org/10.18416/IJMPI.2026.2603046

Proceedings Articles, ID 997

Development of a Compact FFL-MPI System Based on a Halbach Permanent Magnet

Main Article Content

Zhiyuan Hou (1) Shandong Laboratory of Advanced Biomaterials and Medical Devices in Weihai,China ; 2) Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, China), Feiyang Liao (1) Shandong Laboratory of Advanced Biomaterials and Medical Devices in Weihai,China ; 2) Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, China), Ya Wang (1) Shandong Laboratory of Advanced Biomaterials and Medical Devices in Weihai,China ; 2) Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, China), Yajie Xu (1) Shandong Laboratory of Advanced Biomaterials and Medical Devices in Weihai,China ; 2) Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, China), Haipeng Lv (1) Shandong Laboratory of Advanced Biomaterials and Medical Devices in Weihai,China), Lilei Dong (1) Shandong Laboratory of Advanced Biomaterials and Medical Devices in Weihai,China), Yilin Yang (1) Shandong Laboratory of Advanced Biomaterials and Medical Devices in Weihai,China ; 2) Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, China), Weixuan Feng (1) Shandong Laboratory of Advanced Biomaterials and Medical Devices in Weihai,China ; 2) Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, China), Jianlan Guo (1) Shandong Laboratory of Advanced Biomaterials and Medical Devices in Weihai,China ; 2) Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, China), Zhongyi Wu (Suzhou Institute of Biomedical Engineering and Technology), Jian Zheng (1) Shandong Laboratory of Advanced Biomaterials and Medical Devices in Weihai,China ; 2) Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, China)

Copyright (c) 2026 Zhiyuan Hou, Feiyang Liao, Ya Wang, Yajie Xu, Haipeng Lv, Lilei Dong, Yilin Yang, Weixuan Feng, Jianlan Guo, Zhongyi Wu, Jian Zheng

Creative Commons License

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

Abstract

The high power consumption and large size of conventional Magnetic Particle Imaging (MPI) systems present significant barriers to their clinical translation. To address this challenge, we present a novel, compact MPI scanner implementation based on a Halbach permanent magnet structure. This design generates a field-free line (FFL) and achieves a gradient strength of 1.16 T/m within a 50 mm diameter bore. Experimental results demonstrate that the system successfully resolves two distinct particle points separated by 1 mm, confirming a spatial resolution better than 1 mm. Our findings position this low-power, Halbach-based MPI scanner as a promising tool for molecular imaging laboratories and a significant step towards future human-scale applications.

Article Details

References

[1] Weber M , et al.Novel Field Geometry Using Two Halbach Cylinders for FFL-MPI. International Journal on Magnetic Particle ImagingVol. 4 No. 2 2018.DOI:10.18416/IJMPI.2018.1811004.
[2] Franke, J. et al. System Characterization of a Highly Integrated Preclinical Hybrid MPI-MRI Scanner. IEEE Transactions on Medical Imaging 35, 1993–2004. doi:10 . 1109 / tmi . 2016 . 2542041 (2016).
[3] Knopp, T., & Buzug, T. M. Magnetic Particle Imaging: An Introduction to Imaging Principles and Scanner Instrumentation. 2012.