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.2025.2503042

Proceedings Articles

Measurement of magnetic relaxation in intratumor magnetic nanoparticles

Main Article Content

Satoshi Ota (Shizuoka University), Hiroki Kosaka (Electrical and Electronic Engineering Course, Graduate School of Integrated Science and Technology, Shizuoka University), Keita Honda (Electrical and Electronic Engineering Course, Graduate School of Integrated Science and Technology, Shizuoka University), Kota Hoshino (Electrical and Electronic Engineering Course, Graduate School of Integrated Science and Technology, Shizuoka University), Haruki Goto (Department of Optoelectronics and Nanostructure Science, Graduate School of Science and Technology, Shizuoka University), Masato Futagawa (Department of Electrical and Electronic Engineering, Shizuoka University), Yasushi Takemura (Department of Electrical and Computer Engineering, Yokohama National University), Kosuke Shimizu (Division of Innovative Diagnostic and Therapeutic Research Institute of Photonics Medicine Hamamatsu University School of Medicine)

Copyright (c) 2025 Satoshi Ota, Hiroki Kosaka, Keita Honda, Kota Hoshino, Haruki Goto, Masato Futagawa, Yasushi Takemura, Kosuke Shimizu

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

Abstract

The magnetization response such as magnetic relaxation of magnetic nanoparticles was affected by the intratumor multiple environments. In this study, the intratumor magnetic relaxation was measured, and the magnetic relaxation time was analyzed to evaluate the environment of a living tumor. The estimated distribution of the magnetic relaxation time in tumor was different from those in the non-biological samples such as magnetic nanoparticle dispersed in liquid and solidified conditions. The evaluation of the magnetic relaxation time particularly determined by the Brownian relaxation associated with the particle physical rotation of intratumor magnetic nanoparticles develops a low-invasive tissue imaging technique based on the magnetic particle imaging.

Article Details

References

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