Patents by Inventor Mitchio Mitomi

Mitchio Mitomi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Field gradient correction apparatus for compensating static field inhomogeneities in NMR imaging system
    Patent number: 4684893
    Abstract: Selective excitation is used to excite to resonance nuclear spins in a predetermined planar slice of a target. The received NMR signals are then used to correct non-homogenity of a static magnetic field based upon the calculated spin-spin relaxation time T.sub.2 * of the observed NMR signal.
    Type: Grant
    Filed: December 23, 1985
    Date of Patent: August 4, 1987
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Fumitoshi Kojima, Mitchio Mitomi
  • Nuclear magnetic resonance diagnostic apparatus
    Patent number: 4604580
    Abstract: Apparatus is provided in an NMR diagnostic apparatus for reducing or eliminating low frequency cyclic noise. The NMR signals are phase demodulated using reference signals having the same frequency as the excitation signals. A provision is made to change the phases of the output reference signals by 180.degree.. These signals are selectively used to demodulate the received NMR signals which are first divided into two signals of the same phase. The demodulated signals, which are 180.degree. apart, are added thereby eliminating the cyclic noise component.
    Type: Grant
    Filed: March 9, 1984
    Date of Patent: August 5, 1986
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Satoshi Sugiura, Mitchio Mitomi, Hirokazu Suzuki