Patents by Inventor Masahide Ichihashi

Masahide Ichihashi 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).

  • Publication number: 20220023663
    Abstract: A radiotherapy system according to an embodiment obtains a distribution of a medicament administered to a tumor, obtains a distribution of a radiation dose administered to the tumor, and produces a radiotherapy plan for the tumor with a combined use of the medicament and the radiation dose based on the medicament distribution and the dose distribution.
    Type: Application
    Filed: July 27, 2021
    Publication date: January 27, 2022
    Applicant: Canon Medical Systems Corporation
    Inventor: Masahide ICHIHASHI
  • Publication number: 20210290977
    Abstract: According to one embodiment, an irradiation control apparatus includes processing circuitry. The processing circuitry obtains an MR image of a first time phase, which includes a tumor region of a patient. The processing circuitry estimates a position of the tumor region of the patient of a second time phase from the MR image of the first time phase, the second time phase being a predetermined time phase after the first time phase. The processing circuitry controls irradiation by a radiotherapy apparatus based on the estimated tumor position of the second time phase.
    Type: Application
    Filed: March 19, 2021
    Publication date: September 23, 2021
    Applicant: Canon Medical Systems Corporation
    Inventor: Masahide ICHIHASHI
  • Publication number: 20210220672
    Abstract: A radiation treatment planning apparatus according to one aspect includes a processing circuitry. The processing circuitry obtains time-series medical images. The processing circuitry specifies a first time phase in which radiation irradiation is performed and a second time phase in which no radiation irradiation is performed, in a period corresponding to the time-series medical images based on a positional relationship between a treatment target region and at-risk region of a patient included in the time-series medical images. The processing circuitry generates a treatment plan based on a medical image of the specified first time phase.
    Type: Application
    Filed: January 21, 2021
    Publication date: July 22, 2021
    Applicant: Canon Medical Systems Corporation
    Inventor: Masahide ICHIHASHI
  • Patent number: 9192781
    Abstract: A radiotherapy system has: a placing unit placing a subject; an imaging unit performing an imaging of the subject; a region setting unit setting a required region of first image data obtained by the imaging unit performing the imaging of the subject and setting a corresponding required region of second image data obtained by, before the imaging, performing a pre-imaging of the subject; a histogram generating unit generating a dose-volume histogram of the required region of the first image data and generating a dose-volume histogram of the required region of the second image data; a difference computing unit computing a difference between the dose-volume histogram of the required region of the first image data and the dose-volume histogram of the required region of the second image data; and an outputting unit, if it is determined that the difference is greater than a threshold value, outputting the determination to an outside.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: November 24, 2015
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Masahide Ichihashi, Masanori Koyama
  • Publication number: 20120207372
    Abstract: A radiotherapy system has: a placing unit placing a subject; an imaging unit performing an imaging of the subject; a region setting unit setting a required region of first image data obtained by the imaging unit performing the imaging of the subject and setting a corresponding required region of second image data obtained by, before the imaging, performing a pre-imaging of the subject; a histogram generating unit generating a dose-volume histogram of the required region of the first image data and generating a dose-volume histogram of the required region of the second image data; a difference computing unit computing a difference between the dose-volume histogram of the required region of the first image data and the dose-volume histogram of the required region of the second image data; and an outputting unit, if it is determined that the difference is greater than a threshold value, outputting the determination to an outside.
    Type: Application
    Filed: April 27, 2012
    Publication date: August 16, 2012
    Applicants: TOSHIBA MEDICAL SYSTEMS CORPORATION, KABUSHIKI KAISHA TOSHIBA
    Inventors: Masahide Ichihashi, Masanori Koyama
  • Patent number: 6577889
    Abstract: A radiographic image diagnosis apparatus includes a photographing unit having a radiation source and a 2D radiation detector to generate data of a fluoroscopic image of an object to be examined. Volume data is generated on the basis of the data of plurality of fluoroscopic images of the object at different angles which are acquired by the photographing unit. A measuring mechanism measures the position and angle of the photographing unit with respect to the object. Projection image data is generated from the volume data on the basis of the position and angle of the photographing unit which are measured by the measuring mechanism. The volume data is then displayed. This makes it possible to display the projection image with substantially the same position and direction as those of a fluoroscopic image.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: June 10, 2003
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Masahide Ichihashi
  • Publication number: 20020045817
    Abstract: A radiographic image diagnosis apparatus includes a photographing unit having a radiation source and a 2D radiation detector to generate data of a fluoroscopic image of an object to be examined. Volume data is generated on the basis of the data of plurality of fluoroscopic images of the object at different angles which are acquired by the photographing unit. A measuring mechanism measures the position and angle of the photographing unit with respect to the object. Projection image data is generated from the volume data on the basis of the position and angle of the photographing unit which are measured by the measuring mechanism. The volume data is then displayed. This makes it possible to display the projection image with substantially the same position and direction as those of a fluoroscopic image.
    Type: Application
    Filed: October 16, 2001
    Publication date: April 18, 2002
    Inventor: Masahide Ichihashi