Patents Examined by Michael Elsenberg
  • Inspecting method and apparatus based on nuclear magnetic resonance using burst wave as exciting high frequency pulse
    Patent number: 5789922
    Abstract: In an inspecting method based on nuclear magnetic resonance, a burst wave having a plurality of sub-pulses frequency-modulated with a high frequency is generated, the burst wave is amplitude-modulated with at least a function which repeats polarity inversion, the amplitude-modulated burst wave is irradiated, as an exciting high frequency pulse, to an object to be inspected, and gradient magnetic fields are generated in predetermined pulse sequence to measure a nuclear magnetic resonance signal.
    Type: Grant
    Filed: May 13, 1996
    Date of Patent: August 4, 1998
    Assignees: Hitachi, Ltd., Hitachi Medical Corporation
    Inventors: Hisaaki Ochi, Etsuji Yamamoto, Yo Taniguchi