Patents by Inventor Duan Qiang Wang

Duan Qiang Wang 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).

  • Method and apparatus for optimization of collimator angles in intensity modulated radiation therapy treatment
    Patent number: 7015490
    Abstract: A method and apparatus to determine an optimum collimator angle of a multi-leaf collimator having an opening and multiple leaf pairs for closing portions of the opening to form a radiation beam arrangement having multiple radiation beam segments. The method and apparatus include application of a cost function to determine a collimator angle which provides for delivery efficiency and target conformity. The user can preferentially either selectively enhance delivery efficiency of the radiation beam arrangement, reducing a number of radiation beam segments and reducing a number of radiation beam monitor units required for delivery of the desired prescription, or selectively enhance conformity of the radiation beam arrangement to a target shape. The optimum collimator angle is then used for delivery of an optimized radiation beam arrangement to a patient by a radiation delivery device.
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: March 21, 2006
    Assignee: Nomos Corporation
    Inventors: Duan Qiang Wang, Robert W. Hill, Simon Chun-pin Lam