Research Topics
| Ralph E HurdSummaryAffiliation: GE Healthcare Country: USA Publications
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Detail Information
Publications
Metabolic imaging in the anesthetized rat brain using hyperpolarized [1-13C] pyruvate and [1-13C] ethyl pyruvateRalph E Hurd
Global Applied Science Laboratory, GE Healthcare, Menlo Park, California 94025, USA
Magn Reson Med 63:1137-43. 2010..Hyperpolarized [1-(13)C]-ethyl pyruvate and [1-(13)C]-pyruvate metabolic imaging in normal brain is demonstrated and quantified in this feasibility and range-finding study...
Hyperpolarized (13) C metabolic imaging using dissolution dynamic nuclear polarizationRalph E Hurd
GE Healthcare, Menlo Park, California, USA
J Magn Reson Imaging 36:1314-28. 2012..J. Magn. Reson. Imaging 2012; 36:1314-1328. © 2012 Wiley Periodicals, Inc...
Cerebral dynamics and metabolism of hyperpolarized [1-(13)C]pyruvate using time-resolved MR spectroscopic imagingRalph E Hurd
Global Applied Science Laboratory, GE Healthcare, Menlo Park, California 94025, USA
J Cereb Blood Flow Metab 30:1734-41. 2010..A model for brain [1-(13)C]lactate, based on blood-brain transport kinetics, CBV, and the observed pyruvate dynamics is described...
Hyperpolarized C-13 spectroscopic imaging of the TRAMP mouse at 3T-initial experienceAlbert P Chen
Department of Radiology, University of California San Francisco, San Francisco, California, USA
Magn Reson Med 58:1099-106. 2007..135 cm(3) nominal spatial resolution. Elevated (13)C lactate (lac) was observed in both primary and metastatic tumors, demonstrating the feasibility of studying cellular bioenergetics in vivo with DNP hyperpolarized (13)C MRSI...
Dynamic and high-resolution metabolic imaging of hyperpolarized [1-13C]-pyruvate in the rat brain using a high-performance gradient insertDirk Mayer
SRI International, Neuroscience Program, Menlo Park, California 94025, USA
Magn Reson Med 65:1228-33. 2011....
Design of flyback echo-planar readout gradients for magnetic resonance spectroscopic imagingCharles H Cunningham
Department of Electrical Engineering, Stanford University, Stanford, California, USA
Magn Reson Med 54:1286-9. 2005..3 min and 4096 voxels in 8.5 min). The trajectories were insensitive to errors in timing and require only a modest (10 to 30%) penalty in SNR relative to conventional phase encoding using the same acquisition time...
Metabolite kinetics in C6 rat glioma model using magnetic resonance spectroscopic imaging of hyperpolarized [1-(13)C]pyruvateJae Mo Park
Department of Electrical Engineering, Stanford University, Stanford, California, USA
Magn Reson Med 68:1886-93. 2012..12 ± 0.02 for glioma, normal brain, and vasculature, respectively. The data suggest that the apparent conversion rate better differentiate glioma from normal brain (P = 0.001, n = 6) than the lactate-to-pyruvate ratio (P = 0.02)...
Application of hyperpolarized [1-¹³C]lactate for the in vivo investigation of cardiac metabolismDirk Mayer
SRI International, Neuroscience Program, 333 Ravenswood Ave, Menlo Park, CA 94025, USA
NMR Biomed 25:1119-24. 2012..5-fold increase in bicarbonate-to-substrate ratio was found after administration of DCA, similar to the effect when using [1-(13) C]pyruvate as the substrate...
Design of spectral-spatial outer volume suppression RF pulses for tissue specific metabolic characterization with hyperpolarized 13C pyruvateAlbert P Chen
GE Healthcare, Toronto, ON, Canada
J Magn Reson 200:344-8. 2009..Preliminary in vivo results showed that the suppression pulse did not prevent the pre-polarized pyruvate from being delivered throughout the animal while it saturated the metabolites within the targeted saturation region...
In vivo hyperpolarized 13C MR spectroscopic imaging with 1H decouplingAlbert P Chen
GE Healthcare, 11 Brunel Court, Suite 5116, Toronto, Ont, Canada M5V3Y3
J Magn Reson 197:100-6. 2009..Narrower linewidth for the [1-(13)C] lactate resonance was observed in hyperpolarized (13)C MRSI data in vivo with (1)H decoupling...
(13)C MR reporter probe system using dynamic nuclear polarizationAlbert P Chen
GE Healthcare, Toronto, ON, Canada
NMR Biomed 24:514-20. 2011..The de-acetylation of the substrate was not observed in control cells...
1H MR spectroscopy using TE averaged PRESS: a more sensitive technique to detect neurodegeneration associated with Alzheimer's diseaseIleana Hancu
GE Global Research Center, One Research Circle, K1 NMR138, Niskayuna, NY 12309, USA
Magn Reson Med 53:777-82. 2005..This increased sensitivity enables new MR applications and, among other benefits, allows for smaller group sizes in drug trials, which can significantly reduce the cost of such trials...
Sequence design for magnetic resonance spectroscopic imaging of prostate cancer at 3 TCharles H Cunningham
Department of Electrical Engineering, Stanford University, California, USA
Magn Reson Med 53:1033-9. 2005..Studies in a human subject verified that this behavior is reproduced in vivo and demonstrated that the water and lipid suppression of the new pulse sequence are sufficient for application in prostate cancer patients...
