Dong Hyun Kim
Affiliation: University of California
- Reducing gradient imperfections for spiral magnetic resonance spectroscopic imagingDong Hyun Kim
Department of Radiology, University of California San Francisco, San Francisco, California 94143, USA
Magn Reson Med 56:198-203. 2006..The use of the measured trajectories in the reconstruction process yielded an up to 20% increase in signal amplitude recovery...
- Simple analytic variable density spiral designDong Hyun Kim
Radiological Sciences Laboratory, Department of Radiology, Stanford University, Stanford, California 94305 5488, USA
Magn Reson Med 50:214-9. 2003..The method enables real-time waveform prescription on scanners with limited computational power. Both slew rate-limited and amplitude-limited regimes are incorporated in the design process...
- Spiral readout gradients for the reduction of motion artifacts in chemical shift imagingDong Hyun Kim
Radiological Sciences Laboratory, Department of Radiology, Stanford University, Stanford, California, USA
Magn Reson Med 51:458-63. 2004..Both phantom and in vivo spectra reconstructed using the new motion artifact reduction algorithm showed significant signal-to-noise ratio (SNR) improvements as compared to uncorrected data...
- Fast multivoxel two-dimensional spectroscopic imaging at 3 TDong Hyun Kim
Department of Radiology, University of California San Francisco, San Francisco, CA, USA
Magn Reson Imaging 25:1155-61. 2007..All protocols were designed to acquire data within a 17-min scan time at a field strength of 3 T...
- Fast CT-PRESS-based spiral chemical shift imaging at 3 TeslaDirk Mayer
Richard M Lucas Center for Magnetic Resonance Spectroscopy and Imaging, Department of Radiology, Stanford University, Stanford, California 94305 5488, USA
Magn Reson Med 55:974-8. 2006..Signals from N-acetyl-aspartate, total creatine, choline-containing compounds (Cho), Glu, and mI were detected in a healthy volunteer with no or only minor baseline distortions within 14 min on a 3 T MR scanner...
- Regularized higher-order in vivo shimmingDong Hyun Kim
Radiological Sciences Laboratory, Department of Radiology, Stanford University, California, USA
Magn Reson Med 48:715-22. 2002..The fully automated shimming package is implemented on a 3 T GE Signa system and its robust performance is demonstrated in phantom and in vivo studies...
- Self-navigated interleaved spiral (SNAILS): application to high-resolution diffusion tensor imagingChunlei Liu
Lucas MRS I Center, Department of Radiology, Stanford University, California 94305 5488, USA
Magn Reson Med 52:1388-96. 2004..To our knowledge, this was also the first time in vivo 512 x 512 DTI results were reported...
- In vivo prostate magnetic resonance spectroscopic imaging using two-dimensional J-resolved PRESS at 3 TDong Hyun Kim
Department of Radiology, Stanford University, CA 94305, USA
Magn Reson Med 53:1177-82. 2005..Phantom and in vivo data are presented to illustrate the multivoxel 2D J-resolved spiral chemical shift imaging sequence...
- Fast parallel spiral chemical shift imaging at 3T using iterative SENSE reconstructionDirk Mayer
Stanford University, Richard M Lucas Center for Magnetic Resonance Spectroscopy and Imaging, Department of Radiology, Stanford, California 94305 5488, USA
Magn Reson Med 59:891-7. 2008....
- Quality assurance of magnetic resonance spectroscopic imaging-derived metabolic dataSandeep Hunjan
Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA 94305 5304, USA
Int J Radiat Oncol Biol Phys 57:1159-73. 2003..We present a quality assurance procedure for MRSI-derived metabolic data acquired ultimately for guiding conformal radiotherapy...
- Liquid chromatography-mass spectrometric analysis of urinary metabolites and their pattern recognition for the prediction of drug-induced hepatotoxicitySookie La
Bioanalysis and Biotransformation Research Center, Korea Institute of Science and Technology, P O BOX 131, Chungryang, Seoul 136 791, Korea
Chem Res Toxicol 18:1887-96. 2005..The developed LC/MS-PR approach might be a useful tool for the prediction of drug-induced hepatotoxicity and for the understanding of hepatotoxic mechanisms...
- Triterpenoids from the flower of Campsis grandiflora K. Schum. as human acyl-CoA: cholesterol acyltransferase inhibitorsDong Hyun Kim
Graduate School of Biotechnology and Plant Metabolism Research Center, Kyung Hee University, Suwon 449 701, Korea
Arch Pharm Res 28:550-6. 2005..Also, compounds 4, 5, 6, and 7 revealed relatively high hACAT-1 inhibitory activity with the value of 46.2+/-1.1, 46.7+/-0.9, 41.5+/-1.3 and 60.8+/-1.1% at the concentration of 100 microg/mL, respectively...
- High-resolution diffusion-weighted imaging with interleaved variable-density spiral acquisitionsTie Qiang Li
Laboratory of Functional and Molecular Imaging, National Institute of Neurological Disease and Stroke, National Institute of Health, Bethesda, Maryland 20892, USA
J Magn Reson Imaging 21:468-75. 2005..To develop a multishot magnetic resonance imaging (MRI) pulse sequence and reconstruction algorithm for diffusion-weighted imaging (DWI) in the brain with submillimeter in-plane resolution...
- Metabolism of 1-(3-[3-(4-cyanobenzyl)-3H-imidazol-4-yl]-propyl)-3-(6-methoxypyridin-3-yl)-1-(2-trifluoromethylbenzyl)thiourea (YH3945), a novel anti-cancer drug, in rats using the 14C-labeled compoundJaeick Lee
Bioanalysis and Biotransformation Research Center, Korea Institute of Science and Technology, P O BOX 131, Chungryang, Seoul 136 791, South Korea
Rapid Commun Mass Spectrom 18:1901-10. 2004..Cyclic metabolites were characteristic of YH3945, and a non-enzymatic reaction mechanism for the formation of cyclic metabolites was postulated...
- Metabolism of ginsenoside R(c) by human intestinal bacteria and its related antiallergic activityEun Ah Bae
College of Pharmacy, Kyung Hee University, Seoul, Korea
Biol Pharm Bull 25:743-7. 2002..W. 940[+Na]). Among ginsenoside R(c) and its metabolites, compound K exhibited the most potent antiallergic activity on the IgE-induced RBL cell line as well as potent cytotoxic activity against tumor cell lines...
- Metabolism of kalopanaxsaponin K by human intestinal bacteria and antirheumatoid arthritis activity of their metabolitesDong Hyun Kim
College of Pharmacy, Kyung Hee University, Seoul, Korea
Biol Pharm Bull 25:68-71. 2002..However, Lactobacillus sp. and Streptococcus sp. transformed KPK to KPI, KPA, and hederagenin only via KPJ. The metabolite KPA of KPK showed potent antirheumatoid arthritis activity...