Characterization of magnetic nanoparticles as contrast agents in magnetic resonance imaging using high-Tc superconducting quantum interference devices in microtesla magnetic fields

Shu Hsien Liao, Hong Chang Yang*, Herng Er Horng, S. Y. Yang

*此作品的通信作者

    研究成果: 雜誌貢獻期刊論文同行評審

    24 引文 斯高帕斯(Scopus)

    摘要

    In this paper, we characterize the spin-lattice relaxation T1, spin-spin relaxation T2, and effective relaxation rate ΓMF of magnetic fluids for magnetic resonance imaging using a high-Tc superconducting quantum interference device (SQUID) in microtesla magnetic fields. When the magnetic susceptibility of the magnetic fluid was increased, a broadening of proton nuclear magnetic resonance spectra and a growing spin-lattice relaxation T1 as well as spin-spin relaxation T2 were observed. The effective relaxation rate ΓMF increased monotonically from 0 to 13 s-1 when the magnetic susceptibility of the magnetic fluids, relative to tap water, was increased from 0 to 0.0015 emu g-1. We demonstrate the magnetic fluid as an image contrast via a high-Tc SQUID in microtesla magnetic fields.

    原文英語
    文章編號025003
    期刊Superconductor Science and Technology
    22
    發行號2
    DOIs
    出版狀態已發佈 - 2009 四月 27

    ASJC Scopus subject areas

    • 電氣與電子工程
    • 凝聚態物理學
    • 陶瓷和複合材料
    • 材料化學
    • 金屬和合金

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