Search Results - "Akoka, S"

3D localized 2D ultrafast J-resolved magnetic resonance spectroscopy: In vitro study on a 7T imaging system by Roussel, T., Giraudeau, P., Ratiney, H., Akoka, S., Cavassila, S.

“…[Display omitted] ► 3D localized 2D ultrafast J-resolved magnetic resonance spectroscopy sequence. ► Sensitivity, spatial localization and spectral resolution…”
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Determination of Substrate and Product Concentrations in Lactic Acid Bacterial Fermentations by Proton NMR Using the ERETIC Method by Silvestre, Virginie, Goupry, Stéphane, Trierweiler, Michel, Robins, Richard, Akoka, Serge

“…A 1H NMR method is described for the determination of the concentration of a chemically diverse group of metabolites over a wide concentration range in…”
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Electronic reference for absolute quantification of brain metabolites by 1H-MRS on clinical whole-body imaging by Desal, H., Pineda Alonso, N., Akoka, S.

“…The electronic reference to access in vivo concentrations (ERETIC) method is a promising technique for absolute concentration quantification by brain proton…”
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Magnetic resonance imaging: a valuable method for the detection of synovial inflammation in rheumatoid arthritis by GOUPILLE, Philippe, ROULOT, Bénédicte, AKOKA, Serge, AVIMADJE, Agbessi M, GARAUD, Pascal, NACCACHE, Laurent, LE PAPE, Alain, VALAT, Jean-Pierre

“…OBJECTIVE: Clinical assessment of rheumatoid arthritis (RA) based on pain and swelling and physical examination is limited by observer error and…”
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Correction of intensity nonuniformity in spin-echo T1-weighted images by COLLEWET, G, DAVENEL, A, TOUSSAINT, C, AKOKA, S

“…This paper presents a method to correct intensity nonuniformity in spin-echo T1-weighted images and particularly the inhomogeneities due to RF transmission…”
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IMPROVEMENT OF THE ERETIC METHOD BY DIGITAL SYNTHESIS OF THE SIGNAL AND ADDITION OF A BROADBAND ANTENNA INSIDE THE NMR PROBE by Akoka, S., Trierweiler, M.

“…The ERETIC method provides an electronic reference signal which can be used to determine concentrations by NMR spectroscopy. We have evaluated two improvements…”
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T2 relaxation time as a marker of brain myelination: experimental MR study in two neonatal animal models by Miot-Noirault, E, Barantin, L, Akoka, S, Le Pape, A

“…The progress of myelination in the brain was evaluated by visualization of grey/white matter differentiation on magnetic resonance (MR) images and quantitative…”
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KINETIC CONSTANT MEASUREMENT BY NMR USING A CALIBRATED INTERNAL SIGNAL (ERETIC) by Billault, I., Akoka, S.

“…We demonstrate that a precise determination of a kinetic constant can be obtained by NMR spectroscopy by using a calibrated internal signal (the ERETIC method)…”
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MR assessment of the brain maturation during the perinatal period: Quantitative T2 MR study in premature newborns by FERRIE, J. C, BARANTIN, L, SALIBA, E, AKOKA, S, TRANQUART, F, SIRINELLI, D, POURCELOT, L

“…The purpose of our study is to trace in vivo and during the perinatal period, the brain maturation process with exhaustive measures of the T2 relaxation time…”
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Co-fermentation of glucose and citrate by Lactococcus lactis diacetylactis: quantification of the relative metabolic rates by isotopic analysis at natural abundance by GOUPRY, S, GENTIL, E, AKOKA, S, ROBINS, R. J

“…The simultaneous catabolism of citrate and glucose by growing Lactococcus lactis subsp. lactis biovar. diacetylactis to obtain energy was followed…”
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Quantitative MR renography using a calibrated internal signal (ERETIC) by Franconi, F, Chapon, C, Lemaire, L, Lehmann, V, Barantin, L, Akoka, S

“…To measure MR renograms, cortical and medullary kidney signal intensity evolution is followed after contrast agent injection. To obtain an accurate…”
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Radiofrequency map of an NMR coil by imaging by Akoka, S, Franconi, F, Seguin, F, Le Pape, A

“…We propose a new imaging method to obtain a map of the radiofrequency (RF) field amplitude over a sample. The sequence contains three RF pulses (alpha, 2…”
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IMPROVEMENT IN QUANTITATIVE ACCURACY OF 13C DEPT INTEGRALS BY PARAMETER-OPTIMIZATION by Karabulut, N., Baguet, E., Trierweiler, M., Akoka, S.

“…The polarization transfer method DEPT (Distortionless Enhancement by Polarization Transfer) has been optimized to improve quantitative 13 C NMR measurements…”
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Adiabatic H-1 decoupling scheme for accurate intensity measurements in C-13 NMR by Tenailleau, E., Akoka, S.

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Experimental MR study of cerebral radiation injury : quantitative T2 changes over time and histopathologic correlation by MIOT, E, HOFFSCHIR, D, ALAPETITE, C, GABORIAUD, G, POTVERT, D, FETISSOF, F, LE PAPE, A, AKOLA, S

“…To use the pig brain as a large-animal model to examine the effects of high-dose single-fraction irradiation on MR images, T2 relaxation time, and histologic…”
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Brain damage and hypoxia in an ovine fetal chronic cocaine model by Laurini, R.N., Arbeille, B., Gemberg, C., Akoka, S., Locatelli, A., Lansac, J., Arbeille, Ph

“…Objective: To assess the development of brain damage in an ovine fetal chronic cocaine model. To evaluate the effect of isolated hypoxic tests on this model…”
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A new detection scheme for ultrafast 2D J-resolved spectroscopy by Giraudeau, Patrick, Akoka, Serge

“…Recent ultrafast techniques enable 2D NMR spectra to be obtained in a single scan. A modification of the detection scheme involved in this technique is…”
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Concentration Measurement by Proton NMR Using the ERETIC Method by Akoka, Serge, Barantin, Laurent, Trierweiler, Michel

“…The ERETIC method (Electronic REference To access In vivo Concentrations) provides a reference signal, synthesized by an electronic device, which can be used…”
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Diffusion imaging with a multi-echo MISSTEC sequence by Franconi, F, Lethimonnier, F, Sonier, C B, Pourcelot, L, Akoka, S

“…An imaging method is presented to measure the water-diffusion coefficient. The sequence (MISSTEC) uses the simultaneous acquisition of a spin echo and several…”
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Precise and accurate quantitative C-13 NMR with reduced experimental time by Caytan, E., Remaud, G. S., Tenailleau, E., Akoka, S.

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