Patents by Inventor Andrew S. Chesnick

Andrew S. Chesnick 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).

  • MRI coil using inductively coupled individually tuned elements arranged as free-pivoting components
    Patent number: 5483163
    Abstract: An MRI probe/transmitter coil has a pair of concentric cylinders with a plurality of inductively coupled freely rotating resonant elements radially mounted between the two cylinders. The coil can be tuned both symmetrically by pivoting all the resonant elements uniformly or asymmetrically by tuning them individually. The coil is driven in quadrature by a quad-hybrid circuit. A substantial part of the electromagnetic energy is stored in the resonant elements outside of the loading region of the coil to reduce perturbation in the coil operation due to the characteristics of the test subject.
    Type: Grant
    Filed: August 12, 1993
    Date of Patent: January 9, 1996
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: Han Wen, Andrew S. Chesnick, Robert S. Balaban