International Journal on Magnetic Particle Imaging
Vol 8 No 1 Suppl 1 (2022): Int J Mag Part Imag

Proceedings Articles

Increasing the efficiency of open-sided field free line scanning MPI system using silicon-steel core

Main Article Content

Damla ALPTEKİN SOYDAN  , Sefa KARACA  , Can Barış TOP 


Currently available preclinical magnetic particle imaging (MPI) systems can provide mm/sub mm -scale resolution for bore diameter of few centimeters. A human-scale system that preserves mm-scale resolution requires large coil sizes and high amount of current and power. Since the resolution in MPI mainly depends on the magnetic field gradient of the selection field coils, core loading may help to obtain a sufficient resolution with a feasible coil size and power consumption. Here, we present an open-sided small-size MPI system in which the outer selection field coils are loaded with a planar magnetic core. We investigated the effect of core loading on the magnetic field efficiencies and the impedances of the coils. For the measurements, three different type of silicon-steels with varying thicknesses are used as core material. Conducted simulation and experimental studies showed that gradient efficiency of the inner and outer coils can be increased by approximately 1.25 and 2 times, respectively.

Article Details


[1] B. Gleich and J.Weizenecker. Tomographic imaging using the nonlinear response of magnetic particles. Nature, 435(7046), 2005.
[2] M. Graeser, F. Thieben, P. Szwargulski, F. Werner, N. Gdaniec, M. Boberg, F. Griese, M.Möddel, P. Ludewig, D. van de Ven, O. M.Weber, O.Woywode, B. Gleich, and T. Knopp. Human-sized magnetic particle imaging for brain applications. Nature Comm., 2019.
[3] E. Yu. Hardware Innovations and Biomedical Applications of Magnetic Particle Imaging, PhD thesis. UC Berkeley, 2017.
[4] M. D. Tehrani, M. O. Kim, and J. Yoon. A Novel Electromagnetic Actuation System for Magnetic Nanoparticle Guidance in Blood Vessels. IEEE Transactions on Magnetics, 50(7), 2014.
[5] J. Rahmer, C. Stehning, and B. Gleich. Remote magnetic actuation using a clinical scale system. Plos One, 13(3), 2018.
[6] T.-A. Le, X. Zhang, A. K. Hoshiar, and J. Yoon. Real-Time Two- Dimensional Magnetic Particle Imaging for Electromagnetic Navigation in Targeted Drug Delivery. Sensors, 17, 2017.
[7] C. B. Top, S. Ilbey, and H. E. Güven. Electronically rotated and translated field-free line generation for open bore magnetic particle imaging.Medical Physics, 44(12), 2017.
[8] C. B. Top and A. Güngör. Tomographic field free line magnetic particle imaging with an open-sided scanner configuration. IEEE Transactions onMedical Imaging, 39(12), 2020.
[9] C.W. T.McLyman. Transformer and Inductor Design Handbook. CRC Press, 2017.