Patents by Inventor Rintarou FUJIMOTO

Rintarou FUJIMOTO 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: 11033755
    Abstract: There is provided a treatment planning system and a particle therapy system. In the related art, it is unable to determine optimum beam intensity in irradiation for which discrete spot irradiation and continuous beam irradiation coexist. There is provided a treatment planning system that includes a spot determination unit that divides an irradiation region to be irradiated with a charged particle beam into a plurality of layers in an advancing direction of the charged particle beam and disposes a plurality of irradiation spots, which becomes irradiation points of the charged particle beam, in the layers and a beam intensity determination unit that determines beam intensity for each of the layers by evaluating the irradiation time by changing the beam intensity in a range of a condition of change in dose distribution which is set in advance.
    Type: Grant
    Filed: November 24, 2017
    Date of Patent: June 15, 2021
    Assignee: HITACHI, LTD.
    Inventors: Takahiro Yamada, Taisuke Takayanagi, Rintarou Fujimoto, Shinichiro Fujitaka, Takuya Nomura
  • Patent number: 10835764
    Abstract: A function/process of recording marker position data and spot data is provided. The marker position data includes position information of a marker 29 measured for tumor tracking irradiation and information on time of execution of X-ray imaging. The spot data includes information on time of irradiation of each spot, a delivered irradiation position, and a delivered irradiation amount. The marker position data and the spot data are synchronized based on the time information, and by using the marker position data and the spot data upon spot irradiation, a delivered dose distribution of proton irradiation is calculated. With this configuration, it is possible to take the influence of interplay effect into consideration, and it is possible to support to make more appropriate determination upon replanning of a treatment plan.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: November 17, 2020
    Assignees: HITACHI, LTD., NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
    Inventors: Yusuke Fujii, Taeko Matsuura, Yuka Matsuzaki, Kikuo Umegaki, Hiroki Shirato, Hidenori Koyano, Takahiro Yamada, Rintarou Fujimoto
  • Publication number: 20200069968
    Abstract: A treatment planning apparatus 501 or a clinical decision support apparatus 701 calculates a dose distribution, calculates the damage to a normal tissue for a plurality of number of times of radiation irradiation based on the calculated dose distribution, and displays at least one or more calculated damages to the normal tissues on display apparatuses 603 and 703 or outputs the same to an outside of the apparatuses 501 and 701. Accordingly, since effects can be calculated for a plurality of number of times of irradiation, the optimum number of time of irradiation can be presented, and an operator and a doctor can be presented with a suitable decision material of a radiation irradiation planning.
    Type: Application
    Filed: December 19, 2016
    Publication date: March 5, 2020
    Inventors: Keiji KOBASHI, Masahiro MIZUTA, Hiroyuki DATE, Hiroki SHIRATO, Shinichi SHIMIZU, Kikuo UMEGAKI, Shusuke HIRAYAMA, Yusuke FUJII, Toru UMEKAWA, Rintarou FUJIMOTO
  • Publication number: 20200054897
    Abstract: A function/process of recording marker position data and spot data is provided. The marker position data includes position information of a marker 29 measured for tumor tracking irradiation and information on time of execution of X-ray imaging. The spot data includes information on time of irradiation of each spot, a delivered irradiation position, and a delivered irradiation amount. The marker position data and the spot data are synchronized based on the time information, and by using the marker position data and the spot data upon spot irradiation, a delivered dose distribution of proton irradiation is calculated. With this configuration, it is possible to take the influence of interplay effect into consideration, and it is possible to support to make more appropriate determination upon replanning of a treatment plan.
    Type: Application
    Filed: March 23, 2017
    Publication date: February 20, 2020
    Inventors: Yusuke FUJII, Taeko MATSUURA, Yuka MATSUZAKI, Kikuo UMEGAKI, Hiroki SHIRATO, Hidenori KOYANO, Takahiro YAMADA, Rintarou FUJIMOTO
  • Publication number: 20180200534
    Abstract: There is provided a treatment planning system and a particle therapy system. In the related art, it is unable to determine optimum beam intensity in irradiation for which discrete spot irradiation and continuous beam irradiation coexist. There is provided a treatment planning system that includes a spot determination unit that divides an irradiation region to be irradiated with a charged particle beam into a plurality of layers in an advancing direction of the charged particle beam and disposes a plurality of irradiation spots, which becomes irradiation points of the charged particle beam, in the layers and a beam intensity determination unit that determines beam intensity for each of the layers by evaluating the irradiation time by changing the beam intensity in a range of a condition of change in dose distribution which is set in advance.
    Type: Application
    Filed: November 24, 2017
    Publication date: July 19, 2018
    Inventors: Takahiro YAMADA, Taisuke TAKAYANAGI, Rintarou FUJIMOTO, Shinichiro FUJITAKA, Takuya NOMURA