Patents by Inventor Yoshimi NOGUCHI

Yoshimi NOGUCHI 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: 10885680
    Abstract: In a medical imaging device that performs compressed sensing, it is possible to shorten a reconstruction time while maintaining image quality. The medical imaging device includes an image reconstructing unit that reconstructs an image by performing an iterative optimization operation of compressed sensing and a base selecting unit that selects a base transform which is used for the optimization every iteration. The base selecting unit may select a base on the basis of a predetermined base sequence or may select a base using weighting factors which are set for the bases in advance. The invention is applied to a medical imaging device such as an MRI apparatus, an ultrasonic imaging apparatus, or a CT apparatus.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: January 5, 2021
    Assignee: HITACHI, LTD.
    Inventor: Yoshimi Noguchi
  • Publication number: 20200286214
    Abstract: Image processing using a machine learning model is enabled, thereby accurately reducing noise to improve image quality. A medical image is acquired; and it is evaluated whether noise in the medical image exceeds a predetermined reference value. A noise reducer reduces the noise of the medical image that has been determined to include noise that exceeds the reference value. The noise of the medical image is reduced using a machine learning model constructed by collecting a plurality of learning data sets that include an image with noise as input data and an image without noise as output data. The machine learning model includes a plurality of layers that perform convolution on an image that is input, one layer of which includes a filter layer in which a plurality of linear or nonlinear filters are incorporated, and convolution coefficients of the plurality of linear or nonlinear filters are predetermined.
    Type: Application
    Filed: February 28, 2020
    Publication date: September 10, 2020
    Inventors: Yukio KANEKO, Masahiro OGINO, Yoshimi NOGUCHI, Yoshitaka BITO
  • Patent number: 10732245
    Abstract: In a diagnostic imaging device, such as an MRI device, correction processing improves an image to be a high-quality image and an imaging time is shortened. In the diagnostic imaging device, a noise reduction unit 201 reduces a noise in observation data acquired with an observation unit 100 and converted into an image, and the image correction unit 202 corrects the noise reduced data by correction processing that uses visual characteristics of human. The image correction unit 202 separates the noise reduced data into a broad luminance component and a local variation component, and generates a correction level map using the broad luminance component. Correcting the noise reduced data using this correction level map and the local variation component acquires a high-quality image that is competent in the clinical field.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: August 4, 2020
    Assignee: HITACHI, LTD.
    Inventors: Yoshimi Noguchi, Masahiro Ogino, Takenori Murase, Tetsuhiko Takahashi
  • Publication number: 20200244041
    Abstract: A nitride semiconductor laser device at least includes a ridge part disposed on a second-conductivity-type semiconductor layer, a conductive oxide layer covering the upper surface of the ridge part and portions of opposite side surfaces of the ridge part, a dielectric layer covering a portion of the conductive oxide layer, and a first metal layer covering the conductive oxide layer and the dielectric layer, wherein a portion of the conductive oxide layer disposed on the upper surface of the ridge part is exposed through the dielectric layer and covered with the first metal layer.
    Type: Application
    Filed: November 26, 2019
    Publication date: July 30, 2020
    Inventors: Akinori Noguchi, Yoshihiko Tani, Yoshimi Tanimoto, Yuhzoh Tsuda
  • Publication number: 20200175675
    Abstract: Provided is a medical imaging device capable of obtaining a medical image with high image quality in a short time by using a novel image reconstruction technique in which DL is applied to medical image processing and by significantly reducing a total imaging time including an image reconstruction time. The medical imaging device classifies a medical image into any of a predetermined plurality of classes, selects an optimal one or a plurality of restorers from a plurality of restorers respectively corresponding to the plurality of classes according to classification results, and reconstructs the medical image using the selected restorers. The medical image is divided into, for example, a plurality of patches, and is reconstructed for each patch and integrated. The restorer can include a CNN.
    Type: Application
    Filed: June 1, 2018
    Publication date: June 4, 2020
    Inventors: Masahiro OGINO, Yoshimi NOGUCHI
  • Publication number: 20200170624
    Abstract: A diagnostic apparatus diagnosing by using a tomographic image of a subject, comprising: an image generator configured to generate the tomographic image based on data obtained from the subject; and a detector configured to perform a process to detect a lesion from the tomographic image, the detector being configured to: generate, using the tomographic image, a filter map for extracting a tissue lesion that is potentially abnormal from the tomographic image; and detect a lesion included in the tomographic image, using the tomographic image and the filter map, and output detection information including a detection result of the lesion.
    Type: Application
    Filed: November 26, 2019
    Publication date: June 4, 2020
    Inventors: Yoshimi NOGUCHI, Maki KUWAYAMA, Yoshiko YAMAMOTO, Noriko ITABASHI, Naoyuki MURAYAMA, Yoko FUJIHARA
  • Publication number: 20200008702
    Abstract: An imaging unit of an MRI apparatus performs imaging of a positioning image of a subject including a spine; a first imaging that images a cross section including the spine and extending along a longitudinal direction of the spine; and a second imaging that images a cross section in a direction of traversing the spine. An automatic cross-section position setting unit detects a specific tissue of the spine using a scout image or an image including the spine acquired in the first imaging step, performs a matching process between the detected specific tissue of the spine and a spine model, and calculates an imaging cross-section position of the second imaging based upon a specific tissue position of the spine specified by matching, thereby performing automatic setting.
    Type: Application
    Filed: April 16, 2019
    Publication date: January 9, 2020
    Applicant: Hitachi, Ltd.
    Inventors: Suguru YOKOSAWA, Hisaaki OCHI, Yoshimi NOGUCHI, Kenta SAKURAGI, Hisako NAGAO, Kuniaki HARADA
  • Patent number: 10433815
    Abstract: An ultrasonography generation device includes an ultrasonic wave transceiver (1002), a user inputter (1006) which inputs input by an operator, a monitor (1011) capable of displaying an image, an image processor (1005) which generates tomographic image data of a fetus and the placenta based on signals acquired from the ultrasonic wave transceiver and sets a region of interest including a region between the fetus and the placenta according to the input from the inputter when the tomographic image data is displayed on the display, a 3D-ROI corrector (1008) which corrects the region of interest using the region of interest set by the operator and the tomographic image data and determines validity of the corrected region of interest, and a presentation part (1012) which presents the determination result from 3D-ROI corrector. The ultrasonography generation device generates a 3D image of the fetus using the corrected region of interest.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: October 8, 2019
    Assignee: HITACHI, LTD.
    Inventors: Yoshimi Noguchi, Masahiro Ogino, Takuma Shibahara, Toshinori Maeda, Yuuko Nagase, Masaru Murashita
  • Publication number: 20190236819
    Abstract: In a medical imaging device that performs compressed sensing, it is possible to shorten a reconstruction time while maintaining image quality. The medical imaging device includes an image reconstructing unit that reconstructs an image by performing an iterative optimization operation of compressed sensing and a base selecting unit that selects a base transform which is used for the optimization every iteration. The base selecting unit may select a base on the basis of a predetermined base sequence or may select a base using weighting factors which are set for the bases in advance. The invention is applied to a medical imaging device such as an MRI apparatus, an ultrasonic imaging apparatus, or a CT apparatus.
    Type: Application
    Filed: January 23, 2018
    Publication date: August 1, 2019
    Applicant: Hitachi, Ltd.
    Inventor: Yoshimi NOGUCHI
  • Patent number: 10347035
    Abstract: A three-dimensional region of interest (ROI) is established with a high degree of accuracy, by a simple method without increasing a burden on the operator, in generating a three-dimensional projected image from medical volume data according to rendering, achieving more efficient interpretation of three-dimensional image and streamlining of diagnostic flow, with the use of the diagnostic image generation apparatus. An energy map is generated on a predetermined tomographic plane, assuming a preset start point as a reference and searching for a path that minimizes the energy, and then the path is set as a boundary of the three-dimensional ROI. The start point may be decided on the basis of the boundary inputted by a user, or the user may set the start point. The user may be allowed to adjust the boundary having been set. The boundary may also be determined on another plane orthogonal to the predetermined tomographic plane.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: July 9, 2019
    Assignee: Hitachi, Ltd.
    Inventors: Masahiro Ogino, Yoshimi Noguchi, Takuma Shibahara
  • Publication number: 20190137589
    Abstract: In a diagnostic imaging device, such as an MRI device, correction processing improves an image to be a high-quality image and an imaging time is shortened. In the diagnostic imaging device, a noise reduction unit 201 reduces a noise in observation data acquired with an observation unit 100 and converted into an image, and the image correction unit 202 corrects the noise reduced data by correction processing that uses visual characteristics of human. The image correction unit 202 separates the noise reduced data into a broad luminance component and a local variation component, and generates a correction level map using the broad luminance component. Correcting the noise reduced data using this correction level map and the local variation component acquires a high-quality image that is competent in the clinical field.
    Type: Application
    Filed: April 12, 2017
    Publication date: May 9, 2019
    Inventors: Yoshimi NOGUCHI, Masahiro OGINO, Takenori MURASE, Tetsuhiko TAKAHASHI
  • Publication number: 20180140282
    Abstract: An ultrasonic diagnostic apparatus that extracts a feature to be satisfied as a measurement cross section, classifies the extracted feature according to the degree of importance, and displays and selects an adequate cross-sectional image for each measurement item is provided. The ultrasonic diagnostic apparatus includes an image processing unit 1005 for processing an RF signal from the ultrasonic diagnostic apparatus to generate a cross-sectional image, and a adequacy determination unit 1007 for determining whether the cross-sectional image is adequate, or not, as a measurement image used for measuring a subject included the cross-sectional image acquired by the image processing unit 1005, and has a configuration in which a result determined by the adequacy determination unit 1007 is displayed on a monitor 1006, and presented to an operator.
    Type: Application
    Filed: June 3, 2015
    Publication date: May 24, 2018
    Inventors: Takashi TOYOMURA, Masahiro OGINO, Takuma SHIBAHARA, Yoshimi NOGUCHI
  • Publication number: 20170270706
    Abstract: A three-dimensional region of interest (ROI) is established with a high degree of accuracy, by a simple method without increasing a burden on the operator, in generating a three-dimensional projected image from medical volume data according to rendering, achieving more efficient interpretation of three-dimensional image and streamlining of diagnostic flow, with the use of the diagnostic image generation apparatus. An energy map is generated on a predetermined tomographic plane, assuming a preset start point as a reference and searching for a path that minimizes the energy, and then the path is set as a boundary of the three-dimensional ROI. The start point may be decided on the basis of the boundary inputted by a user, or the user may set the start point. The user may be allowed to adjust the boundary having been set. The boundary may also be determined on another plane orthogonal to the predetermined tomographic plane.
    Type: Application
    Filed: June 1, 2017
    Publication date: September 21, 2017
    Inventors: Masahiro OGINO, Yoshimi NOGUCHI, Takuma SHIBAHARA
  • Patent number: 9761041
    Abstract: A three-dimensional region of interest (ROI) is established with a high degree of accuracy, by a simple method without increasing a burden on the operator, in generating a three-dimensional projected image from medical volume data according to rendering, achieving more efficient interpretation of three-dimensional image and streamlining of diagnostic flow, with the use of the diagnostic image generation apparatus. An energy map is generated on a predetermined tomographic plane, assuming a preset start point as a reference and searching for a path that minimizes the energy, and then the path is set as a boundary of the three-dimensional ROI. The start point may be decided on the basis of the boundary inputted by a user, or the user may set the start point. The user may be allowed to adjust the boundary having been set. The boundary may also be determined on another plane orthogonal to the predetermined tomographic plane.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: September 12, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Masahiro Ogino, Yoshimi Noguchi, Takuma Shibahara
  • Publication number: 20170251999
    Abstract: An ultrasonography generation device includes an ultrasonic wave transceiver (1002), a user inputter (1006) which inputs input by an operator, a monitor (1011) capable of displaying an image, an image processor (1005) which generates tomographic image data of a fetus and the placenta based on signals acquired from the ultrasonic wave transceiver and sets a region of interest including a region between the fetus and the placenta according to the input from the inputter when the tomographic image data is displayed on the display, a 3D-ROI corrector (1008) which corrects the region of interest using the region of interest set by the operator and the tomographic image data and determines validity of the corrected region of interest, and a presentation part (1012) which presents the determination result from 3D-ROI corrector. The ultrasonography generation device generates a 3D image of the fetus using the corrected region of interest.
    Type: Application
    Filed: April 17, 2015
    Publication date: September 7, 2017
    Inventors: Yoshimi NOGUCHI, Masahiro OGINO, Takuma SHIBAHARA, Toshinori MAEDA, Yuuko NAGASE, Masaru MURASHITA
  • Publication number: 20170035364
    Abstract: To acquire a higher-quality image with high-speed imaging in an MRI apparatus or the like to which compressed sensing is applied. Included are: an observation unit that does not observe, when any one of two points being point-symmetric with respect to the origin is observed, the other point in observation of a high frequency component of a K-space of the MRI apparatus; and a reconstruction unit that reconstructs an image from a component of the K-space observed by the observation unit. The reconstruction process of the reconstruction unit includes an image correction process based on an observation pattern of the observation unit.
    Type: Application
    Filed: February 5, 2015
    Publication date: February 9, 2017
    Inventors: Yoshimi NOGUCHI, Masahiro OGINO
  • Publication number: 20150279086
    Abstract: A three-dimensional region of interest (ROI) is established with a high degree of accuracy, by a simple method without increasing a burden on the operator, in generating a three-dimensional projected image from medical volume data according to rendering, achieving more efficient interpretation of three-dimensional image and streamlining of diagnostic flow, with the use of the diagnostic image generation apparatus. An energy map is generated on a predetermined tomographic plane, assuming a preset start point as a reference and searching for a path that minimizes the energy, and then the path is set as a boundary of the three-dimensional ROI. The start point may be decided on the basis of the boundary inputted by a user, or the user may set the start point. The user may be allowed to adjust the boundary having been set. The boundary may also be determined on another plane orthogonal to the predetermined tomographic plane.
    Type: Application
    Filed: March 4, 2015
    Publication date: October 1, 2015
    Inventors: Masahiro OGINO, Yoshimi NOGUCHI, Takuma SHIBAHARA