Patents by Inventor Siv Chang Tan

Siv Chang Tan 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).

  • Tomodensitometry image acquisition and reconstruction process and a tomodensitometer using this process
    Patent number: 4680782
    Abstract: An image acquisition and reconstruction process for increasing the definition of the radiological image obtained by tomodensitometry. The invention consists in taking two series of data or "views" and in arranging this data by causing the views W.sub.i of the second series to undergo a translation of --.pi..theta. and a symmetry --.gamma., in the space [.theta.,.gamma.], .theta. being equal to .beta.+.gamma.; .gamma. designates the angle between the different detectors and the straightline joining the origin of the fan-shaped X ray beam to the center of rotation of the source-detectors assembly and .beta. represents the different angles of the source-detectors assembly at which acquisition of the views is made.
    Type: Grant
    Filed: October 19, 1984
    Date of Patent: July 14, 1987
    Assignee: Thomson-CSF
    Inventors: Siv Chang Tan, Tri Hue Nguyen, Claude Benchimol