Patents by Inventor Alexander Ganssen

Alexander Ganssen 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).

  • Patent number: 4390840
    Abstract: In the exemplary embodiments, the imaging of the interior of bodies is rendered possible by means of nuclear magnetic resonance. Up to the present time, the known methods have such a small signal-to-noise ratio that the medical application is uncertain on account of the necessary long measuring duration and the thus unavoidable body movement. The disclosed method permits a significant raising of the signal-to-noise ratio and thus renders possible a shortening of the measuring time for the purpose of preparing medically utilizable images. For this purpose, the disclosure provides, through inversion of the nuclear magnetization by means of "fast adiabatic passage" in the primary field direction and simultaneous detection of the magnetization change by a longitudinal field detector, the attainment of a spatially resolved examination of extensive objects by means of nuclear magnetic resonance (NMR, entire body-zeugmatography) with substantially higher constant field intensities than previously.
    Type: Grant
    Filed: November 19, 1980
    Date of Patent: June 28, 1983
    Assignee: Siemens Aktiengesellschaft
    Inventors: Alexander Ganssen, Arnulf Oppelt, Wilfried Loeffler