Nuclear magnetic resonance detection in inhomogeneous...

Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system

Reexamination Certificate

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Reexamination Certificate

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07439738

ABSTRACT:
Methods and systems for compensating for static magnetic field inhomogeneities during nuclear magnetic resonance detection are disclosed. Application of radio frequency pulses and/or magnetic field gradients may be used to correct for spin dephasing caused by the inhomogeneities. The methods and system may be used to improve signal-to-noise ratios in NMR and MRI systems where magnetic field inhomogeneity may have an effect.

REFERENCES:
patent: 5233991 (1993-08-01), Wright
patent: 5289127 (1994-02-01), Doddrell et al.
patent: 5304930 (1994-04-01), Crowley et al.
patent: 5798643 (1998-08-01), Werthner
patent: 5935065 (1999-08-01), Rose, Jr. et al.
patent: 6489767 (2002-12-01), Prado et al.
patent: 6570383 (2003-05-01), McKinnon et al.
patent: 6618607 (2003-09-01), Song
patent: 6674282 (2004-01-01), Pines et al.
patent: 6819108 (2004-11-01), Huang et al.
patent: 2003/0052677 (2003-03-01), Pines et al.
patent: WO 02/082116 (2002-10-01), None
International Search Report and Written Opinion received in Intl. Appln. No. PCT/US05/26229, mailed May 5, 2006.
Chen N.K. et al., “Removal of Intravoxel Dephasing Artifact in Gradient-Echo Images Using a Field-Map Based RF Refocusing Technique,”Magnetic Resonance in Medicine, 42:807-812 (1999).
Glover, Gary H., “3D z-Shim Method for Reduction of Susceptibility Effects in Bold fMRI,”Magnetic Resonance in Medicine, 42:290-299 (1999).
Sakellariou, D., et al., “Variable rotation composite pulses for high resolution nuclear magnetic resonance using inhomogeneous magnetic and radiofrequency fields,”Chem. Phys. Lett. 363:25-33 (2002).
Tannus A., et al., “Adiabatic Pulses,”NMR in Biomedicine, pp. 423-434, 1997.
Topgaard, D., et al. “‘Shim pulses’ for NMR spectroscopy and imaging,”Proc. Natl. Acad. Sci., vol. 101, No. 51, p. 17576-17581, Dec. 21, 2004.
Meriles, et al., “Approach to High-Resolution ex Situ NMR Spectroscopy,”Science, vol. 293, p. 83-85, 2001.
Balbach et al., “High-Resolution NMR in Inhomogeneous Fields”, Chemical Physics Letters, vol. 277, p. 367-374 (Oct. 1997).
Balibanu et al., “Nuclear Magnetic Resonance in Inhomogeneous Magnetic Fields”, Journal of Magnetic Resonance, vol. 145, p. 246-258 (2000).
Garbow et al., “Total Spin Coherence Transfer Echo Spectroscopy”, Journal of Chemical Phyics, vol. 79 (No. 11) p. 5301-5310 (Dec. 1983).
Garwood et al., “The Return of the Frequency Sweep: Designing Adiabatic Pulses for Contemporary NMR”, Journal of Magnetic Resonance, vol. 153, p. 155-177 (2001).
Gochin et al., “A Sharp Method for High-Resolution NMR of Heteronuclear Spin Systems in Inhomogeneous Fields”, Journal of Magnetic Resonance, vol. 63, p. 431-437 (1985).
Hall et al., “Measurement of High-Resolution NMR Spectra in an Inhomogeneous Magnetic Field”, Journal of the American Chemical Society, vol. 109, p. 7579-7581 (1987).
Heise et al., “Two-Dimensional High-Resolution NMR Spectra in Matched B0 and B1 Field Gradients”, Journal of Magnetic Resonance, vol. 156, p. 146-151 (2002).
Meriles et al., “Broadband Phase Modulation by Adiabatic Pulses”, Journal of Magnetic Resonance, vol. 164, p. 177-181 (2003).
Meriles et al., “Resolved Magic-Angle Spinning of Anisotropic Samples in Inhomogeneous Fields”, Chemcial Physics Letters, vol. 358, p. 391-395 (2002).
Sakellariou et al., “High-Resolution NMR of Anisotropic Samples with Spinning Away From the Magic Angle”, Chemical Physics Letters, vol. 377, p. 333-339 (2003).
Vathyam et al., “Homogeneous NMR Spectra in Inhomogeneous Fields”, Science, vol. 272, p. 92-96 (Apr. 1996).
Weitekamp et al., “High-Resolution NMR Spectra in Inhomogeneous Magnetic Fields: Application of Total Spin Coherence Transfer Echoes”, vol. 103, p. 3578-3579 (1981).

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