Patents by Inventor Jacob D. Willig-Onwuachi

Jacob D. Willig-Onwuachi 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).

  • Birdcage coils for simultaneous acquisition of spatial harmonics
    Patent number: 6791321
    Abstract: In a magnetic resonance imaging apparatus, a main magnet assembly (12) produces a uniform magnetic field through an imaging region (14). An imaging region is defined within a subject by selecting gradient magnetic fields spatially encode the main magnetic field. A whole body birdcage radio frequency coil (26) excites magnetic resonance in dipoles of the subject. The resonance signals are received by the whole body coil (26) and by a second, local birdcage radio frequency coil (16). The first radio frequency coil (26) produces and is sensitive to a uniform radio frequency field in the imaging region (14) while the second radio frequency coil (28) is sensitive to a field that varies sinusoidally in space. From one radio frequency excitation, the two birdcage coils (26, 16) receive different sets of data with which to fill k-space, accelerating data collection.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: September 14, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Jacob D. Willig-Onwuachi, Robert W. Brown, Shmaryu M. Shvartsman
  • Birdcage coils for simultaneous acquisition of spatial harmonics
    Publication number: 20030231018
    Abstract: In a magnetic resonance imaging apparatus, a main magnet assembly (12) produces a uniform magnetic field through an imaging region (14). An imaging region is defined within a subject by selecting gradient magnetic fields spatially encode the main magnetic field. A whole body birdcage radio frequency coil (26) excites magnetic resonance in dipoles of the subject. The resonance signals are received by the whole body coil (26) and by a second, local birdcage radio frequency coil (16). The first radio frequency coil (26) produces and is sensitive to a uniform radio frequency field in the imaging region (14) while the second radio frequency coil (28) is sensitive to a field that varies sinusoidally in space. From one radio frequency excitation, the two birdcage coils (26, 16) receive different sets of data with which to fill k-space, accelerating data collection.
    Type: Application
    Filed: June 18, 2002
    Publication date: December 18, 2003
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Jacob D. Willig-Onwuachi, Robert W. Brown, Shmaryu M. Shvartsman