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Simultaneous imaging of C-13 metabolism and H-1 structure: technical considerations and potential applications
Journal article   Peer reviewed

Simultaneous imaging of C-13 metabolism and H-1 structure: technical considerations and potential applications

Jeremy W. Gordon, Sean B. Fain, David J. Niles, Kai D. Ludwig, Kevin M. Johnson and Eric T. Peterson
NMR in biomedicine, Vol.28(5), pp.576-582
05/01/2015
DOI: 10.1002/nbm.3279
PMCID: PMC4426883
PMID: 25810146
url
https://www.ncbi.nlm.nih.gov/pmc/articles/4426883View
Open Access

Abstract

Real-time imaging of C-13 metabolism in vivo has been enabled by recent advances in hyperpolarization. As a result of the inherently low natural abundance of endogenous C-13 nuclei, hyperpolarized C-13 images lack structural information that could be used to aid in motion detection and anatomical registration. Motion before or during the C-13 acquisition can therefore result in artifacts and misregistration that may obscure measures of metabolism. In this work, we demonstrate a method to simultaneously image both H-1 and C-13 nuclei using a dual-nucleus spectral-spatial radiofrequency excitation and a fully coincident readout for rapid multinuclear spectroscopic imaging. With the appropriate multinuclear hardware, and the means to simultaneously excite and receive on both channels, this technique is straightforward to implement requiring little to no increase in scan time. Phantom and in vivo experiments were performed with both Cartesian and spiral trajectories to validate and illustrate the utility of simultaneous acquisitions. Motion compensation of dynamic metabolic measurements acquired during free breathing was demonstrated using motion tracking derived from H-1 data. Simultaneous multinuclear imaging provides structural H-1 and metabolic C-13 images that are correlated both spatially and temporally, and are therefore amenable to joint H-1 and C-13 analysis and correction of structure-function images. Copyright (c) 2015 John Wiley & Sons, Ltd.
Biophysics Life Sciences & Biomedicine Radiology, Nuclear Medicine & Medical Imaging Science & Technology Spectroscopy Technology

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