Patents by Inventor Ramon Alfredo Siochi

Ramon Alfredo Siochi 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).

  • Multi-leaf collimator constrained optimization of intensity modulated treatments
    Patent number: 6240161
    Abstract: A system and method for radiation therapy delivery. The present invention provides for optimizing radiation delivery by accounting for the physical attributes of a beam shielding device (401) when determining an optimal radiation treatment. These include, for example, constraining the optimization engine with realizable positioning of plates and/or collimator leaves. Thus, an optimal set of fields and intensity levels for those fields are chosen.
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: May 29, 2001
    Assignee: Siemens Medical Systems, Inc.
    Inventor: Ramon Alfredo Siochi
  • Microgradient intensity modulating multi-leaf collimator
    Patent number: 6134296
    Abstract: The present invention provides for delivering two one (1) centimeter by point five (0.5) centimeter intensity maps that are orthogonal to each other so as to generate microgradients within each one centimeter by one centimeter square. Thus, an effective intensity map grid size is point five centimeters by point five centimeters.
    Type: Grant
    Filed: January 20, 1999
    Date of Patent: October 17, 2000
    Assignee: Siemens Medical Systems, Inc.
    Inventor: Ramon Alfredo Siochi
  • Dosimetry error reduction for optimized static intensity modulation
    Patent number: 6128366
    Abstract: A radiation therapy delivery and dosimetry error correction system. Rather than iteratively creating more segments to correct for dosimetry errors, the present invention receives the outputs from a segment optimization algorithm (i.e., a set of segments and an initial set of monitor units) and varies the number of monitor units associated with each segment to correct for dosimetry errors. Only if an extreme case exists will additional segments be added.
    Type: Grant
    Filed: July 8, 1998
    Date of Patent: October 3, 2000
    Assignee: Siemens Medical Systems, Inc.
    Inventor: Ramon Alfredo Siochi
  • Dynamic sub-space intensity modulation
    Patent number: 6052430
    Abstract: A system and method for dynamic subspace intensity modulation. Portions around the edges of a multi-leaf collimator-defined static radiation field are expanded or shrunk during part or all of the delivery of radiation at constant velocity. In order to match some or all of the sloping regions (502) of an intensity profile, the individual leaves (41, 42) of the multi-leaf collimator are moved at a fixed velocity over the sloping portions (502) of the intensity profile. By keeping the major portion of the field static and by only moving the leaves at one fixed velocity over a small subspace of the intensity profile, it is relatively easier to know what dose the patient receives and it is also relatively easier to resume treatment since it can be determined exactly how many more monitor units of radiation must be delivered and what the leaf positions were when the radiation was turned off.
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: April 18, 2000
    Assignee: Siemens Medical Systems, Inc.
    Inventors: Ramon Alfredo Siochi, John Hughes