Authors:
I Marco-Rius, SE Bohndiek, MI Kettunen, TJ Larkin, M Basharat, C Seeley, KM Brindle
Journal name: 
Contrast Media Mol Imaging
Citation info: 
9(2):182-186
Abstract: 
The spin polarization-induced nuclear Overhauser effect (SPINOE) describes the enhancement of spin polarization of solvent nuclei by the hyperpolarized spins of a solute. In this communication we demonstrate that SPINOEs can be observed between [1,4-(13) C2 ]fumarate, hyperpolarized using the dissolution dynamic nuclear polarization technique, and solvent water protons. We derive a theoretical expression for the expected enhancement and demonstrate that this fits well with experimental measurements. Although the magnitude of the effect is relatively small (around 2% measured here), the SPINOE increases at lower field strengths, so that at clinically relevant magnetic fields (1.5-3 T) it may be possible to track the passage through the circulation of a bolus containing a hyperpolarized (13) C-labeled substrate through the increase in solvent water (1) H signal.
DOI: 
http://doi.org/10.1002/cmmi.1556
Research group: 
Brindle Group, VISION Lab
E-pub date: 
31 Mar 2014