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Class Information
Number: 324/308
Name: Electricity: measuring and testing > Particle precession resonance > Using a nuclear resonance spectrometer system > Including a test sample and control sample
Description: Subject matter in which the nuclear resonance measurement of an unknown material is made by comparison with the resonance of a known material.

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
6462543 Method, instrument and system for performing verification measurements and corrections of magnetic fields in magnets for nuclear magnetic resonance imaging machines Oct. 8, 2002
6456072 Method and apparatus for simultaneous acquisition of high resolution NMR spectra from multiple samples Sep. 24, 2002
6404195 Apparatus and pulse sequence method for MR tomography Jun. 11, 2002
6404193 Solvent susceptibility compensation for coupled LC-NMR Jun. 11, 2002
6333629 Method for non-invasively and without contact, inspecting foil enclosed packages, using magnetic resonance techniques Dec. 25, 2001
6318146 Multi-imaging modality tissue mimicking materials for imaging phantoms Nov. 20, 2001
6275722 Methods and apparatus for magnetic resonance imaging with RF coil sweeping Aug. 14, 2001
6226544 Living body internal active source estimation apparatus May. 1, 2001
6181136 Method of manufacturing the human tissue phantoms for evaluation of electromagnetic wave environment Jan. 30, 2001
5644232 Quantitation and standardization of magnetic resonance measurements Jul. 1, 1997
5644646 Vessel enhancement filtering in magnetic resonance angiography Jul. 1, 1997
5596275 NMR analysis of polypropylene in real time Jan. 21, 1997
5554974 Encodable tag with radio frequency readout Sep. 10, 1996
5545995 Measurement of geometric distortion in MRI images Aug. 13, 1996
5500592 Absolute metabolite concentrations from poorly spatially-resolved MR response signals Mar. 19, 1996
5322682 Method for quantitatively measuring and mapping stored iron in tissue using MRI Jun. 21, 1994
5314681 Composition of positive and negative contrast agents for electron spin resonance enhanced magnetic resonance imaging May. 24, 1994
5312755 Contrast resolution tissue mimicking phantoms for nuclear magnetic resonance imaging with stable NMR properties May. 17, 1994
5270651 Method and apparatus for diagnosing osteoporosis Dec. 14, 1993
5270650 Non-destructive detection of spoilage using nuclear magnetic resonance spectroscopy Dec. 14, 1993
5233992 MRI method for high liver iron measurement using magnetic susceptibility induced field distortions Aug. 10, 1993
5178146 Grid and patient alignment system for use with MRI and other imaging modalities Jan. 12, 1993
5175499 Systems and markers using magnetic or spin resonance phenomena Dec. 29, 1992
5072732 NMR instrument for testing for fluid constituents Dec. 17, 1991
5036280 Phantom for magnetic resonance imaging system Jul. 30, 1991
5023185 Method for determining resolution power or discrimination capacity of an NMR imaging apparatus Jun. 11, 1991
4994745 Electron spin resonance spectroscopy Feb. 19, 1991
4940940 Method of radio-frequency excitation in an NMR experiment Jul. 10, 1990
4875486 Instrument and method for non-invasive in vivo testing for body fluid constituents Oct. 24, 1989
4873707 X-ray tomography phantoms, method and system Oct. 10, 1989
4857843 Self-referencing magnetic resonance spectroscopy system Aug. 15, 1989
4791369 Method of measuring magnetic field error of an NMR imaging apparatus and of correcting distortion caused by the error Dec. 13, 1988
4789830 Determining absolute image intensity in magnetic resonance systems Dec. 6, 1988
4785245 Rapid pulse NMR cut meter Nov. 15, 1988
4774957 Material for diagnosis by nuclear magnetic resonance imaging Oct. 4, 1988
4749948 NMR imaging systems Jun. 7, 1988
4739265 NMR imaging method Apr. 19, 1988
4728575 Contrast agents for NMR imaging Mar. 1, 1988
4718431 Surface coil with calibration substance for use in a nuclear magnetic resonance apparatus Jan. 12, 1988
4716368 Magnetic resonance reconstruction and scanning techniques using known information, constraints, and symmetry relations Dec. 29, 1987
4701705 NMR moisture measurements Oct. 20, 1987
4701709 NMR imaging method Oct. 20, 1987
4701708 Polarization transfer by selective homonuclear technique for suppression of uncoupled spins in NMR spectroscopy Oct. 20, 1987
4684889 NMR apparatus compensated for primary field changes Aug. 4, 1987
4682107 Method of operating a nuclear magnetic resonance spectrometer Jul. 21, 1987
4665364 Magnetic resonance imaging system May. 12, 1987
4635643 Assay method for the in vivo quantitative determination of mineral content in bone Jan. 13, 1987
4618826 Quality control phantom for use in computed tomographic imaging instruments and method of use Oct. 21, 1986
4613819 Nuclear magnetic resonance imaging apparatus Sep. 23, 1986
4581582 High-spatial-resolution spectroscopic NMR imaging of chemically-shifted nuclei Apr. 8, 1986

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