Patents by Inventor Paula T. Beall

Paula T. Beall 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).

  • Use of cross-linked hydrogel materials as image contrast agents in proton nuclear magnetic resonance tomography and tissue phantom kits containing such materials
    Patent number: 4729892
    Abstract: Cross-linked hydrogel materials in the swollen state exhibit a range of nuclear magnetic resonance spin density values, spin-lattice or longitudinal relaxation (T.sub.1) values, and spin-spin or transverse relaxation (T.sub.2) values embracing that of the spectrum of values associated with animal and human tissues, thereby rendering such materials useful in nuclear magnetic resonance tomography equipment contrast determinations in physiological imaging and, as to those cross-linked hydrogel materials having T.sub.1 and T.sub.2 values substantially shorter than the surrounding tissue, such materials are useful as image contrast agents, for example, in the gastro-intestinal tract.
    Type: Grant
    Filed: March 21, 1986
    Date of Patent: March 8, 1988
    Assignee: Ciba-Geigy Corporation
    Inventor: Paula T. Beall