๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Full Automation of Quantitation of in Vivo NMR by LPSVD(CR) and EPLPSVD

โœ Scribed by A. Diop; W. Kolbel; D. Michel; A. Briguet; D. Graverondemilly


Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
291 KB
Volume
103
Category
Article
ISSN
1064-1866

No coin nor oath required. For personal study only.

โœฆ Synopsis


A full automatic and reliable method for NMR quantification is proposed. It is based on the linear prediction singular-value decomposition with continuous regularization [LPSVD(CR)] and on the enhancement procedure (EP) followed by LPSVD (EPLPSVD). Advantages of both methods have been considered. LPSVD(CR) has been used to find a good estimate for the number of spectral components. A signific?nce test allows refining this number, which is then used in the EPLPSVD method. A Monte Carlo study has proved that EPLPSVD is a maximum-likelihood estimator. This new algorithm leads to reliable estimates for the spectral parameters even for signals with a low signal-to-noise ratio. No a priori knowledge is needed. c 1994 Academic Press. Inc.


๐Ÿ“œ SIMILAR VOLUMES


In vivo Quantitative characterization of
โœ John C. Ford; Felix W. Wehrli ๐Ÿ“‚ Article ๐Ÿ“… 1991 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 519 KB

In trabecular bone the NMR linewidth is found to be governed by the magnetic field inhomogeneity arising from the difference in magnetic permeability between bone and marrow. T2\* was measured in vivo in the distal femur by interferometry and localized spectroscopy. Both methods showed T2\* to be in

In vivo quantitation of N-3 and N-7 alky
โœ D.N. Mhaskar; J.M. Raber; S.M. D'Ambrosio ๐Ÿ“‚ Article ๐Ÿ“… 1982 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 461 KB

Alkylation at the N-3 and N-7 sites of purines in rat mammary gland DNA induced in vivo by N-ethyl-N-nitrosourea (ENU) and N-methyl-N-nitrosourea (MNU) was quantitated using a newly developed, quantitative, and relatively rapid assay that does not require the use of radiolabeled DNA or radiolabeled

Magnetic Resonance Imaging of Meat Produ
โœ Guiheneuf, Thierry M; Tessier, Jean-Joseph; Herrod, Nicholas J; Hall, Laurance D ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 1001 KB

An integrated protocol has been developed for the automated acquisition and processing of a set of magnetic resonance images which quantify the spatial distribution of the TI and T, values, proton density (M,) and magnetisation transfer (MT)-rate. That protocol has been validated for homogeneous sam

Assessment of magnesium concentrations b
โœ H. R. Halvorson; A. M. Q. Vande Linde; J. A. Helpern; K. M. A. Welch ๐Ÿ“‚ Article ๐Ÿ“… 1992 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 583 KB

## Abstract ^31^P NMR spectra obtained __in vivo__ reveal the presence of a few reasonably well defined chemical species, namely, ATP, orthophosphate (P~i~), and, in brain, phosphocreatine. The chemical shifts of these resonances respond to changes in concentrations of ions such as H^+^ and Mg^2+^