International Journal on Magnetic Particle Imaging IJMPI
Vol. 6 No. 2 (2020): Int J Mag Part Imag

Research Articles

Non-ideal Selection Field Induced Artifacts in X-Space MPI

Main Article Content

Ecrin Yagiz (Bilkent University), Ahmet R. Cagil (Bilkent University), Emine Ulku Saritas (Bilkent University)


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

Article Details


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