International Journal on Magnetic Particle Imaging IJMPI
Vol. 9 No. 1 Suppl 1 (2023): Int J Mag Part Imag

Proceedings Articles

A design of a low-power open-side MPI scanner Using inverted spliced permanent magnets

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Magnetic particle imaging (MPI) is a promising imaging modality with high sensitivity, high resolution and no depth limitation. Scaled MPI scanners are developed to satisfy the demand for imaging larger imaging objects. Considering the ultimate goal of whole-body scanning, open-side MPI scanner is more suitable than traditional closed-bore MPI scanner. A fully electrically driven open-side MPI scanner have been built, enabling rotating and translating field free line (FFL) in three dimensions. However, the high power required to run the system may become a challenge when trying to scale it up. Here, we present a design of an open-side MPI device using inverted spliced permanent magnets. The design eliminates the need for power suppliers to generate and move the FFL, reducing the cooling requirements of the system. Compared to conventional solution based on permanent magnets, our solution can generate a more uniform FFL, which is essential for accurate imaging.

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