Patents by Inventor Hari Gopalakrishnan

Hari Gopalakrishnan 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).

  • Binary multileaf collimator delivery with per-leaf field width
    Patent number: 11049627
    Abstract: A radiation treatment delivery system, includes a linear accelerator (LINAC) and a multileaf collimator (MLC), coupled with the distal end of the LINAC, wherein the MLC has two banks of leaves, organized into a plurality of opposing leaf pairs. The system further includes a processing device, operatively coupled to the LINAC and the MLC, to control the plurality of leaf pairs of the MLC such that for each of a plurality of radiation beam delivery positional sections corresponds to a range of radiation beam positions over a discrete time interval that constrains an overall treatment time and wherein each leaf pair of the plurality of opposing leaf pairs is open to a fixed opening for a fraction of time in the discrete time interval and closed for the remaining fraction of time in the discrete time interval, while a radiation beam of the radiation treatment system is active.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: June 29, 2021
    Assignee: ACCURAY INCORPORATED
    Inventors: Eric Schnarr, Hari Gopalakrishnan, Jari Toivanen, Matthew Orton
  • Binary multileaf collimator delivery with per-leaf field width
    Patent number: 10770196
    Abstract: A radiation treatment delivery system, includes a linear accelerator (LINAC) and a multileaf collimator (MLC), coupled with the distal end of the LINAC, wherein the MLC has two banks of leaves, organized into a plurality of opposing leaf pairs. The system further includes a processing device, operatively coupled to the LINAC and the MLC, to control the plurality of leaf pairs of the MLC such that for each of a plurality of radiation beam delivery positional sections corresponds to a range of radiation beam positions over a discrete time interval, wherein each leaf pair of the plurality of opposing leaf pairs is open to a fixed opening for a fraction of time in the discrete time interval and closed for the remaining fraction of time in the discrete time interval, while a radiation beam of the radiation treatment system is active.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: September 8, 2020
    Assignee: ACCURAY INCORPORATED
    Inventors: Eric Schnarr, Hari Gopalakrishnan, Jari Toivanen, Matthew Orton
  • BINARY MULTILEAF COLLIMATOR DELIVERY WITH PER-LEAF FIELD WIDTH
    Publication number: 20200234840
    Abstract: A radiation treatment delivery system, includes a linear accelerator (LINAC) and a multileaf collimator (MLC), coupled with the distal end of the LINAC, wherein the MLC has two banks of leaves, organized into a plurality of opposing leaf pairs. The system further includes a processing device, operatively coupled to the LINAC and the MLC, to control the plurality of leaf pairs of the MLC such that for each of a plurality of radiation beam delivery positional sections corresponds to a range of radiation beam positions over a discrete time interval that constrains an overall treatment time and wherein each leaf pair of the plurality of opposing leaf pairs is open to a fixed opening for a fraction of time in the discrete time interval and closed for the remaining fraction of time in the discrete time interval, while a radiation beam of the radiation treatment system is active.
    Type: Application
    Filed: April 7, 2020
    Publication date: July 23, 2020
    Inventors: Eric Schnarr, Hari Gopalakrishnan, Jari Toivanen, Matthew Orton
  • BINARY MULTILEAF COLLIMATOR DELIVERY WITH PER-LEAF FIELD WIDTH
    Publication number: 20200043625
    Abstract: A radiation treatment delivery system, includes a linear accelerator (LINAC) and a multileaf collimator (MLC), coupled with the distal end of the LINAC, wherein the MLC has two banks of leaves, organized into a plurality of opposing leaf pairs. The system further includes a processing device, operatively coupled to the LINAC and the MLC, to control the plurality of leaf pairs of the MLC such that for each of a plurality of radiation beam delivery positional sections corresponds to a range of radiation beam positions over a discrete time interval, wherein each leaf pair of the plurality of opposing leaf pairs is open to a fixed opening for a fraction of time in the discrete time interval and closed for the remaining fraction of time in the discrete time interval, while a radiation beam of the radiation treatment system is active.
    Type: Application
    Filed: August 6, 2018
    Publication date: February 6, 2020
    Inventors: Eric Schnarr, Hari Gopalakrishnan, Jari Toivanen, Matthew Orton