Patents Represented by Law Firm LaRievere & Grubman
  • Patent number: 5298862
    Abstract: Method of measuring the nuclear magnetic resonance in selected areas of a body in order to present images of body cross-sections according to the slice-selective two dimensional Fourier-transformation. Wherein, the body is in a homogeneous magnetic field, exposed to a selection gradient and excited by a selective RF-pulse. Wherein a time-limited phase encoding gradient is applied, and finally by means of a read gradient at least one nuclear resonance signal is generated by gradient inversion in the form of at least one so-called gradient echo. Wherein, the selection gradient, the phase encoding gradient, as well as, the read gradient are arranged orthogonally with respect to one another. Wherein, RF-pulses have a high frequency excitation profile, of which the base frequencies of the high frequency differ by a value .DELTA.f corresponding to the distance between the centers of adjacent layers or slices.
    Type: Grant
    Filed: November 10, 1992
    Date of Patent: March 29, 1994
    Inventor: Jurgen Hennig