Patents by Inventor Giles E. Santyr

Giles E. Santyr 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).

  • Suppression of oscillations in NMR measurement using off-resonance spin-locking pulses
    Patent number: 5420510
    Abstract: Oscillations in longitudinal magnetization as a spin system recovers from a 180.degree. inversion pulse in the presence of off-resonance spin-locking pulse are eliminated by tipping the magnetization prior to spin-locking by an amount .theta. and tipping it back by an amount -.theta. after spin-locking. A one-shot measurement of off-resonance relaxation constant T.sub.1.rho. employs the .+-..theta. pulses to improve accuracy and a T.sub.1.rho. enhanced imaging sequence employs the .+-..theta. pulses to reduce artifacts.
    Type: Grant
    Filed: August 13, 1993
    Date of Patent: May 30, 1995
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Ethan J. Fairbanks, Giles E. Santyr, James A. Sorenson
  • Adiabatic off-resonance spin-locking for enhanced tumor contrast in NMR imaging
    Patent number: 5404882
    Abstract: Contrast between tumor and normal fat and normal fibro-glandular breast tissues is enhanced in an NMR image by a preparatory pulse sequence executed prior to the imaging pulse sequence. An off-resonance spin-locking RF pulse is employed to enhance contrast between fibro-glandular tissue and tumors and an inversion recovery sequence is employed to enhance contrast between fat and tumors.
    Type: Grant
    Filed: January 24, 1994
    Date of Patent: April 11, 1995
    Assignee: Wisconsin Alumni Research Foundation
    Inventor: Giles E. Santyr
  • Off-resonance spin-locking for enhanced tumor contrast in NMR imaging
    Patent number: 5281917
    Abstract: Contrast between tumor and normal fat and normal fibro-glandular breast tissues is enhanced in an NMR image by a preparatory pulse sequence executed prior to the imaging pulse sequence. An off-resonance spin-locking RF pulse is employed to enhance contrast between fibro-glandular tissue and tumors and an inversion recovery sequence is employed to enhance contrast between fat and tumors.
    Type: Grant
    Filed: August 5, 1992
    Date of Patent: January 25, 1994
    Assignee: Wisconsin Alumni Research Foundation
    Inventor: Giles E. Santyr