Patents by Inventor Mitsue Miyazaki

Mitsue Miyazaki 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: 20210255265
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes sequence controlling circuitry and processing circuitry. The sequence controlling circuit executes, while a k-space is divided into a plurality of segments, a pulse sequence by which a tag pulse is applied and subsequently acquisition is performed. The processing circuit generates an image based on the pulse sequence executed by the sequence controlling circuit. The pulse sequence is a pulse sequence by which the acquisition is repeatedly performed at the center of the k-space. The sequence controlling circuit executes the pulse sequence, while changing the range to which the tag pulse is applied, for each of the plurality of segments.
    Type: Application
    Filed: February 14, 2020
    Publication date: August 19, 2021
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Mitsue MIYAZAKI, Yoshimori KASSAI
  • Patent number: 10980492
    Abstract: A magnetic resonance imaging (MRI) apparatus according to an exemplary embodiment includes a sequence controller and a data processor. The sequence controller executes a pulse sequence using a combination of multiple types of labeling methods to acquire magnetic resonance signals. The data processor generates multiple types of labeled images based on the magnetic resonance signals.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: April 20, 2021
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Tsutomu Hoshino, Mitsue Miyazaki
  • Publication number: 20210068698
    Abstract: An image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry generates an image by performing an analysis based on a Z-spectrum generated based on data obtained by executing a pulse sequence including application of a Magnetization Transfer (MT) pulse and causes a display to display the generated image by dividing the image into a plurality of segments.
    Type: Application
    Filed: September 5, 2019
    Publication date: March 11, 2021
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Mitsue MIYAZAKI
  • Publication number: 20210072332
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes sequence controlling circuitry and processing circuitry. The sequence controlling circuitry is configured to execute a first pulse sequence including application of a Magnetization Transfer (MT) pulse and to subsequently execute a second pulse sequence including application of an MT pulse after an action that causes a change in a physiological state of a patient. The processing circuitry is configured to generate a first Z-spectrum based on data obtained by executing the first pulse sequence, to generate a second Z-spectrum based on data obtained by executing the second pulse sequence, and to generate data by performing an analysis based on the first Z-spectrum and the second Z-spectrum.
    Type: Application
    Filed: September 5, 2019
    Publication date: March 11, 2021
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Mitsue Miyazaki
  • Patent number: 10901060
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes sequence control circuitry and processing circuitry. The sequence control circuitry performs first data acquisition in a full k-space and performs a plurality of second data acquisition in partial k-spaces, each of the partial k-spaces being smaller than the entirety of the full k-space. The processing circuitry generates an image, based on data acquired from the first data acquisition and a plurality of pieces of data acquired from the plurality of second data acquisition.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: January 26, 2021
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Mitsue Miyazaki, Satoshi Sugiura, Tsutomu Hoshino, Xiangzhi Zhou
  • Publication number: 20210011103
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes sequence controlling circuitry and processing circuitry. The sequence controlling circuitry acquires a first piece of data by executing a first pulse sequence having a first Echo Time (TE) value, to acquire a second piece of data by executing a second pulse sequence having a second TE value different from the first TE value, and to acquire a third piece of data by executing a third pulse sequence having a third TE value different from the first and the second TE values. The processing circuitry extracts a signal related to water, a signal related to a first fat, and a signal related to a second fat, on the basis of the first piece of data, the second piece of data, and the third piece of data.
    Type: Application
    Filed: July 8, 2019
    Publication date: January 14, 2021
    Applicants: University of California, San Diego
    Inventors: Mitsue MIYAZAKI, Christine CHUNG
  • Publication number: 20200386838
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes sequence controlling circuitry and processing circuitry. The sequence controlling circuitry performs a first acquisition and a second acquisition, the first acquisition including executing a preparation module corresponding to a first Echo Time (TE) value and subsequently performing an acquisition sequence, the second acquisition including executing the preparation module corresponding to a second TE value different from the first TE value and subsequently performing the acquisition sequence, the acquisition sequence being a pulse sequence including applying an RF excitation pulse in presence of a gradient magnetic field, and subsequently applying an RF re-focusing pulse in presence of another gradient magnetic field having an opposite polarity to that of the gradient magnetic field. The processing circuitry extracts at least one of a signal related to a first fat and a signal related to a second fat.
    Type: Application
    Filed: June 5, 2019
    Publication date: December 10, 2020
    Applicants: CANON MEDICAL SYSTEMS CORPORATION, THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Mitsue MIYAZAKI, Cheng Ouyang, Christine Chung
  • Patent number: 10732246
    Abstract: In one embodiment, a magnetic resonance imaging apparatus includes memory circuitry configured to store a predetermined program; and processing circuitry configured, by executing the predetermined program, to set an FSE type pulse sequence in which an excitation pulse is followed by a plurality of refocusing pulses, the plurality of the refocusing being divided into at least a first pulse group subsequent to the excitation pulse and a second pulse group subsequent to the first pulse group, the first pulse group including refocusing pulses having a predetermined high flip angle, and the second pulse group including refocusing pulses having flip angles decreased from the predetermined high flip angle toward a flip angle of zero, and generate an image of an object from respective MR signals corresponding to the plurality of refocusing pulses acquired by applying the fast spin echo type pulse sequence to the object.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: August 4, 2020
    Assignee: Canon Medical Systems Corporation
    Inventors: Mitsue Miyazaki, Keiichiro Ishi
  • Publication number: 20200191895
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes sequence control circuitry and processing circuitry. The sequence control circuitry executes a first pulse sequence and a second pulse sequence, the first pulse sequence including a first spoiler pulse serving as a dephasing gradient pulse of a first amount, the second pulse sequence including a second spoiler pulse serving as a dephasing gradient pulse of a second amount being different from the first amount or the second pulse sequence not including a spoiler pulse serving as a dephasing gradient pulse. The processing circuitry performs a subtraction operation between a first data obtained from the first pulse sequence and a second data obtained from the second pulse sequence, thereby generating an image.
    Type: Application
    Filed: February 26, 2020
    Publication date: June 18, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Mitsue MIYAZAKI, Xiangzhi ZHOU, Aiming LU
  • Patent number: 10684343
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes sequence control circuitry and processing circuitry. The sequence control circuitry executes two pulse sequences, thereby acquiring two pieces of data, each of the two pulse sequences being a pulse sequence in which the sequence control circuitry acquires data after applying a short inversion time recovery (STIR) pulse while concurrently applying a gradient magnetic field for spatial selection and each of the two pulse sequences being executed in two different timings by the sequence control circuitry. The processing circuitry generates an image by performing a subtraction processing between the two pieces of data acquired by the sequence control circuitry.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: June 16, 2020
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Mitsue Miyazaki
  • Patent number: 10620286
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes sequence control circuitry and processing circuitry. The sequence control circuitry executes a first pulse sequence and a second pulse sequence, the first pulse sequence including a first spoiler pulse serving as a dephasing gradient pulse of a first amount, the second pulse sequence including a second spoiler pulse serving as a dephasing gradient pulse of a second amount being different from the first amount or the second pulse sequence not including a spoiler pulse serving as a dephasing gradient pulse. The processing circuitry performs a subtraction operation between a first data obtained from the first pulse sequence and a second data obtained from the second pulse sequence, thereby generating an image.
    Type: Grant
    Filed: December 27, 2015
    Date of Patent: April 14, 2020
    Assignee: Canon Medical Systems Corporation
    Inventors: Mitsue Miyazaki, Xiangzhi Zhou, Aiming Lu
  • Patent number: 10595725
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes a collection unit and a generation unit. The collection unit collects data of an imaging area over a plurality of time phases within a certain respiratory cycle after applying a labeling pulse to a labeling area in which cerebrospinal fluid flows under a task of respiration. The generation unit generates images of a plurality of time phases depicting the cerebrospinal fluid by using the collected data.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: March 24, 2020
    Assignee: Canon Medical Systems Corporation
    Inventors: Mitsue Miyazaki, Yuichi Yamashita
  • Patent number: 10534054
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes sequence control circuitry. The sequence control circuitry applies an MT (Magnetization Transfer) pulse over a plurality of slices under a gradient magnetic field and configured to apply, for each of the plurality of slices to which the MT pulse is applied, an RF pulse having a frequency corresponding to a resonance frequency of certain protons in each of the plurality of slices.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: January 14, 2020
    Assignee: Canon Medical Systems Corporation
    Inventors: Mitsue Miyazaki, Xiangzhi Zhou
  • Patent number: 10488484
    Abstract: A magnetic resonance imaging method executed in a magnetic resonance imaging apparatus according to an embodiment comprises: applying an inversion pulse; executing a subsequent imaging sequence including an RF (Radio Frequency) pulse and a gradient magnetic field concurrently applied with the RF pulse in a slice direction and performing, for a slice position selected by the RF pulse and the gradient magnetic field and during a time period including a null point, data acquisition in a plurality of orientations including a center of a two-dimensional k-space.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: November 26, 2019
    Assignee: Canon Medical Systems Corporation
    Inventors: Mitsue Miyazaki, Aiming Lu, Xiangzhi Zhou
  • Patent number: 10481232
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes sequence control circuitry. The sequence control circuitry executes a first pulse sequence that acquires data by radial sampling. The sequence control circuitry executes a second pulse sequence a plurality of times by changing a frequency of magnetization transfer (MT) pulses, the second pulse sequence acquiring data by Cartesian sampling after applying an MT pulse.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: November 19, 2019
    Assignee: Canon Medical Systems Corporation
    Inventors: Mitsue Miyazaki, Cheng Ouyang
  • Publication number: 20190250232
    Abstract: An MR image especially useful for computer-guided diagnostics uses at least one programmed computer to acquire an MR-image of T1 values for a patient volume containing at least one predetermined tissue type having a respectively corresponding predetermined range of expected T1 values. A color-coded T1-image is generated from the MR-image by (a) assigning a first color or spectrum of colors to those pixels having a T1 value falling within a predetermined range of expected T1 values and (b) assigning a second color or spectrum of colors to those pixels having a T1 value falling outside a predetermined range of expected T1 values. The color-coded T1-image is then displayed for use in computer-aided diagnosis of patient tissue.
    Type: Application
    Filed: April 22, 2019
    Publication date: August 15, 2019
    Inventor: Mitsue MIYAZAKI
  • Patent number: 10368777
    Abstract: Black blood time to inversion (BBTI) tag-on and tag-off images acquired by magnetic resonance imaging (MRI) are analyzed to produce difference magnitude 3D images as a function of time (BBTI values) representing blood perfusion in a region of interest (ROI). Perfusion data of the ROI having values which are different for normal and abnormal myocardial tissues are displayed for plural slices of a 3D image and for plural BBTI values in a single display panel.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: August 6, 2019
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Xiangzhi Zhou, Mitsue Miyazaki, Tsutomu Hoshino
  • Patent number: 10267882
    Abstract: An MR image especially useful for computer-guided diagnostics uses at least one programmed computer to acquire an MR-image of T1 values for a patient volume containing at least one predetermined tissue type having a respectively corresponding predetermined range of expected T1 values. A color-coded T1-image is generated from the MR-image by (a) assigning a first color or spectrum of colors to those pixels having a T1 value falling within a predetermined range of expected T1 values and (b) assigning a second color or spectrum of colors to those pixels having a T1 value falling outside a predetermined range of expected T1 values. The color-coded T1-image is then displayed for use in computer-aided diagnosis of patient tissue.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: April 23, 2019
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventor: Mitsue Miyazaki
  • Patent number: 10226192
    Abstract: A magnetic resonance imaging apparatus includes a first data acquisition unit, a second data acquisition unit and an image data generating unit. The first data acquisition unit acquires first data from a slice to be a target after a first delay time from a reference of a first heart rate in synchronized with an electrocardiogram. The second data acquisition unit acquires second data from the slice after a second delay time from a reference of a second heart rate which is different from the first heart rate. The image data generating unit generates image data with image reconstruction processing using the first data and the second data.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: March 12, 2019
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventor: Mitsue Miyazaki
  • Patent number: RE47604
    Abstract: A magnetic resonance imaging apparatus according to an exemplary embodiment includes a memory, a specifying unit, and a display controller. The memory stores a corresponding color table representing correspondence relationships between T1 values of which value ranges with respect to each tissue are known and colors to be assigned to pixels with the T1 values. The specifying unit analyzes a T1-valued image and specifies colors to be assigned to each pixel on the basis of T1 values converted from pixel values of each pixel and the corresponding color table. The display controller displays on a display the image color-coded with the specified colors.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: September 17, 2019
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventor: Mitsue Miyazaki