Effect of ionic interaction between a hyperpolarized magnetic resonance chemical probe and a gadolinium contrast agent for the hyperpolarized lifetime after dissolution

Yoichi Takakusagi, Kaori Inoue, Tatsuya Naganuma, Fuminori Hyodo, Kazuhiro Ichikawa

    Research output: Contribution to journalArticlepeer-review

    1 Citation (Scopus)

    Abstract

    In hyperpolarization of 13C-enriched magnetic resonance chemical probes in the solid-state, a trace amount of gadolinium (Gd) contrast agent can be used to maximize polarization of the 13C nuclear spins. Here, we report systematic measurement of the spin-lattice relaxation time (T1) and enhancement level of 13C-enriched chemical probes in the presence of various Gd contrast agents in the liquid-state after dissolution. Using two different 13C probes having opposite electric charges at neutral pH, we clearly show the T1 of hyperpolarized 13C was barely affected by the use of a Gd complex that displays repulsive interaction with the 13C probe in solution, whilst T1 was drastically shortened when there was ionic attraction between probe and complex.

    Original languageEnglish
    Pages (from-to)157-160
    Number of pages4
    JournalJournal of Magnetic Resonance
    Volume270
    DOIs
    Publication statusPublished - Sep 1 2016

    All Science Journal Classification (ASJC) codes

    • Biophysics
    • Biochemistry
    • Nuclear and High Energy Physics
    • Condensed Matter Physics

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