Patents Represented by Attorney, Agent or Law Firm John R. Fry
  • Anti-aliasing transmitter coil array for magnetic resonance
    Patent number: 6307373
    Abstract: In a magnetic resonance imaging apparatus 1 there is a region of good i.e. uniform field between A and B but, where the field falls off, say, at D, the r.f. excitation pulse can produce an alias image of D which overlies the desired image of say, B. To reduce this effect, the r.f. excitation coil 4 comprises an array of small coils, the amplitude and phase of the excitation of which is controlled so that the r.f. field collapses rapidly outside the region of good field.
    Type: Grant
    Filed: June 1, 1999
    Date of Patent: October 23, 2001
    Assignee: Picker International, Inc.
    Inventor: Ian Robert Young