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Ecole Polytechnique Fédérale de Lausanne (EPFL)

Lausanne, CH

Ecole Polytechnique Fédérale de Lausanne (EPFL) Patent applications
Patent application numberTitlePublished
20110001477Method for nuclear magnetic resonance (NMR) spectroscopy measurements using long-lived coherences (LLC) - A method for nuclear magnetic resonance (NMR) spectroscopy of a sample comprises preparation of the sample and carrying out an NMR spectroscopy measurement. Preparation includes excitation of long lived coherences (LLC) between the singlet state S01-06-2011
20110001475Methods for nuclear magnetic resonance (NMR) or magnetic resonance imaging (MRI) measurements using long-lived states - A method for nuclear magnetic resonance (NMR) or magnetic resonance imaging (MRI) measurements, includes creation of enhanced polarization of nuclei of a first kind within a sample in a magnetic field at cryogenic temperatures and transfer of the polarised sample to room temperature. The enhanced polarization of nuclei of the first kind is thereby transformed into long-lived states (LLS) of nuclei of a second kind and these LLS are sustained. The LLS is at least partially converted into observable magnetisation and an NMR or MRI measurement is carried out. The method allows one to extend the time needed between hyperpolarised magnetisation and NMR detection.01-06-2011