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.2025.2503024

Proceedings Articles

Initial MRI Results Using Open-Sided Hybrid MPI and Low-Field MRI Scanner

Main Article Content

Sefa Karaca (1) Aselsan A.Ş. 2) Electrical and Electronics Engineering, Bilkent University 3) National Magnetic Resonance Research Center (UMRAM), Bilkent University), Damla Alptekin Soydan (1) Aselsan A.Ş.), Can Barış Top (1) Aselsan A.Ş.), Emine Ulku Saritas (1) Electrical and Electronics Engineering, Bilkent University 2) National Magnetic Resonance Research Center (UMRAM), Bilkent University)

Copyright (c) 2025 Sefa Karaca, Damla Alptekin Soydan, Can Bar?? Top, Emine Ulku Saritas

Creative Commons License

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

Abstract

Magnetic particle imaging (MPI) offers high contrast and sensitivity in imaging the spatial distribution of the magnetic nanoparticles (MNPs), since only the MNPs contribute to the signal and the human tissue does not. In return, MPI lacks anatomical information, which needs to be provided by another imaging modality such as magnetic resonance imaging (MRI). Recently, we presented a preclinical-size open-sided hybrid MPI and low-field MRI (LF-MRI) scanner, in which the coils are used interchangeably between the two modalities. In this study, the transmit/receive chain for the LF-MRI mode is integrated into the hybrid system, and its LF-MRI performance is demonstrated with imaging experiments at a B0 field of 50 \mT.

Article Details

References

[1] B. Gleich and J.Weizenecker. Tomographic imaging using the nonlinear response of magnetic particles.Nature, 435(7046):1214–1217, 2005, doi:10.1038/nature03808.
[2] J. Franke, U. Heinen, H. Lehr, A. Weber, F. Jaspard, W. Ruhm, M. Heidenreich, and V. Schulz. System characterization of a highly integrated preclinical hybrid mpi-mri scanner. IEEE Transactions onMedical Imaging, 35(9):1993–2004, 2016.
[3] C. B. Top and A. Güngör. Tomographic field free line magnetic particle imaging with an open-sided scanner configuration. IEEE Transactions on Medical Imaging, 39(12):4164–4173, 2020, doi:10.1109/TMI.2020.3014197.
[4] S. Karaca, D. A. Soydan, C. B. Top, and E. U. Saritas. A simulation study for an open-sided hybrid mpi-mri scanner. International Journal on Magnetic Particle Imaging IJMPI, 9(1 Suppl 1), 2023.
[5] K. Koolstra, T. O’Reilly, P. Börnert, and A.Webb. Image distortion correction for mri in low field permanent magnet systems with
strong b0 inhomogeneity and gradient field nonlinearities. Magnetic ResonanceMaterials in Physics, Biology andMedicine, 2021, doi:10.1007/s10334-021-00907-2.