Magnetic resonance imaging apparatus
March 31, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesConjugate symmetry magnetic resonance imaging Scan time reduction using conjugate symmetry and recalled echo Three dimensional volume imaging with conjugate symmetrization MR imaging method and apparatus Conjugate symmetry magnetic resonance imaging Image reconstruction method in NMR imaging Correction of NMR data acquired by an echo-planar technique Patent #: 5151656 InventorApplicationNo. 040854 filed on 03/31/1993US Classes:324/309, To obtain localized resonance within a sample324/307Using a nuclear resonance spectrometer systemExaminersPrimary: Tokar, MichaelAttorney, Agent or FirmForeign Patent References
International ClassG01R 033/20Foreign Application Priority Data1992-03-31 JPAbstractData is produced from asymmetrical echo data, and an MR image is reconstructed from the data thus produced. Namely, inverse Fourier transformation is performed on center echo data, thereby producing phase data. The phase data is inverted in polarity, thereby producing polarity-inverted phase data. Fourier transformation is performed on the polarity-inverted phase data in a readout direction, producing phase-correction data. Inverse Fourier transformation is performed on the asymmetrical echo data in an encode direction. The phase-correction data and the echo data are convoluted in the readout direction, thereby producing echo-data free of phase distortion. Unmeasured echo data is inferred from the convoluted data by utilizing complex conjugate property of the echo data. Inverse Fourier transformation is performed on the convoluted data and the inferred data in the readout direction, thereby producing an image free of phase distortion.Field of SearchPARTICLE PRECESSION RESONANCEUsing a nuclear resonance spectrometer system To obtain localized resonance within a sample By scanning sample frequency spectrum With signal decoupling By spectrum storage and analysis Including polarizing magnetic field/radio frequency tuning With conditioning of transmitter signal Spectrometer components Electronic circuit elements | |
