Search Results - "SPENCER, R. G. S"

The relationship between creatine kinase kinetics and exercise intensity in human forearm is unchanged by age by Horská, A, Fishbein, K W, Fleg, J L, Spencer, R G

“…Using (31)P magnetic resonance spectroscopy, creatine kinase (CK) reaction kinetics was assessed in the forearm flexor digitorum profundus muscle of healthy…”
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Optimal time spacings for T2 measurements: monoexponential and biexponential systems by Shrager, R. I., Weiss, G. H., Spencer, R. G. S.

“…We have developed an optimal design strategy, i.e. a choice of times at which the magnetization should be measured, in spin‐echo measurements, when the number…”
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Adenovirus-mediated VEGF121 gene transfer stimulates angiogenesis in normoperfused skeletal muscle and preserves tissue perfusion after induction of ischemia by GOWDAK, L. H. W, POLIAKOVA, L, LAKATTA, E. G, ANVERSA, P, SPENCER, R. G. S, TALAN, M, CAPOGROSSI, M. C, XIAOTONG WANG, KOVESDI, I, FISHBEIN, K. W, ZACHEO, A, PALUMBO, R, STRAINO, S, EMANUELI, C, MARROCCO-TRISCHITTA, M

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Electron paramagnetic resonance oxygen mapping (EPROM): Direct visualization of oxygen concentration in tissue by Velan, S. Sendhil, Spencer, Richard G.S., Zweier, Jay L., Kuppusamy, Periannan

“…Tissue oxygen content is a central parameter in physiology but is difficult to measure. We report a novel procedure for spatial mapping of oxygen by electron…”
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Optimal time spacings forT2 measurements: monoexponential and biexponential systems by Shrager, R. I., Weiss, G. H., Spencer, R. G. S.

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Measurement of spin-lattice relaxation times and kinetic rate constants in rat muscle using progressive partial saturation and steady-state saturation transfer by Horská, A, Spencer, R G

“…31P spin-lattice relaxation times (T1) of metabolites in rat calf muscle at 1.9 Tesla and the forward rate through the creatine kinase (CK) reaction have been…”
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Comparing individual signal-averaged spectra by Spencer, R G

“…It is demonstrated here that individual signal-averaged NMR spectra can be compared statistically in a rigorous fashion. This is accomplished by considering…”
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Effects of single nightly injections of growth hormone—releasing hormone (GHRH 1–29) in healthy elderly men by Vittone, Janet, Blackman, Marc R., Busby-Whitehead, Jan, Tsiao, Chris, Stewart, Kerry J., Tobin, Jordan, Stevens, Tom, Bellantoni, Michele F., Rogers, Marc A., Baumann, Gerhard, Roth, Jesse, Harman, S.Mitchell, Spencer, Richard G.S.

“…Age-related reductions in growth hormone (GH) and insulin-like growth factor-I (IGF-I) may contribute to decreased muscle mass and strength in older persons…”
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ATP synthesis and degradation rates in the perfused rat heart. 31P-nuclear magnetic resonance double saturation transfer measurements by Spencer, R.G., Balschi, J.A., Leigh, J.S., Ingwall, J.S.

“…A limitation of magnetization transfer techniques for studying enzyme kinetics in vivo has been the difficulty of treating systems with more than two…”
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Optimization of Magnetization Transfer Experiments to Measure First-Order Rate Constants and Spin-Lattice Relaxation Times by Katki, Hormuzd, Weiss, George H., Kiefer, James E., Taitelbaum, Haim, Spencer, Richard G. S.

“…A recent analysis of the optimization of magnetization transfer experiments to estimate first‐order rate constants is extended to the design of experiments for…”
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Optimization of magnetization transfer experiments for kinetic rate measurements by Taitelbaum, H, Weiss, G H, Spencer, R G

“…A framework is developed for optimizing magnetization transfer experiments for measuring first-order rate constants of a two-component exchange network. In the…”
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An unusual peptide conformation may precipitate amyloid formationin Alzheimer's disease : application of solid-state NMR to the determination of protein secondary structure by SPENCER, R. G. S, HALVERSON, K. J, AUGER, M, MCDERMOTT, A. E, GRIFFIN, R. G, LANSBURY, P. T

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Response of engineered cartilage tissue to biochemical agents as studied by proton magnetic resonance microscopy by Potter, Kimberlee, Butler, John J., Horton, Walter E., Spencer, Richard G. S.

“…Objective To test the hypothesis that magnetic resonance imaging (MRI) results correlate with the biochemical composition of cartilage matrix and can therefore…”
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Diffusion imaging with paired CPMG sequences by Mulkern, R V, Spencer, R G

“…We report a method for mapping apparent diffusion coefficients using two interleaved CPMG sequences. Image slice selection is performed prior to each sequence,…”
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