International Journal on Magnetic Particle Imaging IJMPI
Vol. 6 No. 2 (2020): Int J Mag Part Imag
https://doi.org/10.18416/IJMPI.2020.2006001
Non-ideal Selection Field Induced Artifacts in X-Space MPI
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Copyright (c) 2020 Ecrin Yagiz, Ahmet R. Cagil, Emine Ulku Saritas
This work is licensed under a Creative Commons Attribution 4.0 International License.
Abstract
In magnetic particle imaging (MPI), the selection field deviates from its ideal linearity in regions away from the center of the scanner. This work demonstrates that unaccounted non-linearity of the selection field causes warping in the image reconstructed with a basic x-space approach. We also show that unwarping algorithms can be applied to effectively address this issue, once the displacement map acting on the reconstructed image is determined. The unwarped image accurately represents the locations of nanoparticles, albeit with a resolution loss in regions away from the center of the scanner due to the degradation in selection field gradients.
Int. J. Mag. Part. Imag. 6(2), 2020, Article ID: 2006001, DOI: 10.18416/IJMPI.2020.2006001
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