Patents Assigned to Toshiba Medical Systems Corporation
  • Medical image processing apparatus and medical image processing method
    Patent number: 10204410
    Abstract: A medical image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to obtain a chronological transition of signal intensities for each of the pixels in a plurality of X-ray images chronologically acquired by using a contrast media. The processing circuitry is configured to correct the chronological transition of the signal intensities on the basis of a level of similarity between at least two mutually-different signal intensities within the chronological transition of the signal intensities.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: February 12, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Ryuji Zaiki, Takuya Sakaguchi, Tadaharu Kobayashi
  • Magnetic resonance imaging apparatus, magnetic resonance imaging method and magnetic resonance imaging system
    Patent number: 10203390
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes a sequence control unit, an image generating unit, and a deriving unit. The sequence control unit executes first imaging scan for acquiring data of a range including a target internal organ and second imaging scan for acquiring data for a diagnostic image by controlling execution of a pulse sequence. The image generating unit generates an image by using data acquired by the first imaging scan. The deriving unit derives an imaging scan area in which data for the diagnostic image are acquired in the second imaging scan and a related area set associated with the imaging scan area in the second imaging scan, based on image processing using the image.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: February 12, 2019
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Shigehide Kuhara, Shuhei Nitta, Taichiro Shiodera, Tomoyuki Takeguchi
  • Automated diagnostic analyzers having vertically arranged carousels and related methods
    Patent number: 10197585
    Abstract: Example automated diagnostic analyzers and methods for using the same are disclosed herein. An example apparatus described herein includes a first carousel rotatably coupled to a base and having a first axis of rotation. The example apparatus includes a second carousel rotatably coupled to the base and vertically spaced over the first carousel such that at least a portion of the second carousel is disposed over the first carousel. In the example apparatus, the second carousel has a second axis of rotation and a plurality of vessels. The example apparatus also includes a pipetting mechanism offset from the second axis of rotation. The example pipetting mechanism is to access the first carousel and the second carousel.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: February 5, 2019
    Assignees: Abbott Laboratories, Toshiba Medical Systems Corporation
    Inventors: Brian L. Ochranek, David C. Arnquist, Takehiko Oonuma, Hirotoshi Tahara, Naoto Sato
  • Gradient magnetic-field coil and magnetic-resonance imaging apparatus
    Patent number: 10197649
    Abstract: A gradient magnetic-field coil according to an embodiment includes multiple units of coil members and a connecting member. In each of the coil members, a coil pattern is formed with a first nonmagnetic metal. The connecting member connects the coil members with each other. Moreover, at least a part of the connecting member is formed with a second nonmagnetic metal that is different from the first nonmagnetic metal.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: February 5, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Yoshitomo Sakakura, Yukiko Nishikawa, Masatoshi Yamashita, Tetsuya Kobayashi
  • Radiation irradiating apparatus and radiation dose management system
    Patent number: 10195462
    Abstract: A radiation irradiating apparatus includes a processing circuitry. The processing circuitry acquires a past cumulative dose distribution associated with patient identifying information, from a storage that is storable a cumulative dose distribution. The processing circuitry calculates a first cumulative dose distribution and a second cumulative dose distribution during a radiation irradiation to a patient associated with the patient identifying information, the first cumulative dose distribution being a cumulative dose distribution, the second cumulative dose distribution being generated by adding the first cumulative dose distribution to the past cumulative dose distribution. The processing circuitry displays, on a display, at least one of the first and second cumulative dose distributions during the radiation irradiation.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: February 5, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Shigeyuki Ishii, Takeshi Ezumi
  • Magnetic resonance imaging apparatus and magnetic resonance imaging method
    Patent number: 10197655
    Abstract: According to one embodiment, a magnetic resonance imaging apparatus includes a data acquisition unit and an image generation unit. The data acquisition unit is configured to acquire magnetic resonance signals from an object in a data acquisition order having a first regularity and a data acquisition order having a second regularity different from the first regularity. The magnetic resonance signals correspond to a sampling region asymmetric in a wave number direction in a k-space. The image generation unit is configured to generate magnetic resonance image data by data processing including image reconstruction processing based on the magnetic resonance signals and a signal filling to a non-sampling region using a phase conjugate symmetry in the k-space.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: February 5, 2019
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Masaaki Umeda, Naotaka Sakashita
  • Image processing apparatus, image processing method, and X-ray diagnosis apparatus
    Patent number: 10198793
    Abstract: An image processing apparatus includes a processor that acquires medical image data and performs noise reduction in at least two of three different directions in the medical image data in a predetermined order.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: February 5, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Satoru Ohishi, Kunio Shiraishi, Hisato Takemoto
  • PET-MRI device
    Patent number: 10197654
    Abstract: A PET-MRI device according to an embodiment includes image generators and a derivation unit. The image generators capture an image of a target placed in an effective visual field of a PET by the PET and an MRI so as to generate a PET image and an MR image. The derivation unit calculates a strain correction factor for correcting strain on the MR image based on a positional relation between a target that is expressed on the PET image and a target that is expressed on the MR image.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: February 5, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Takuzo Takayama, Hitoshi Yamagata, Kazuya Okamoto
  • X-ray CT apparatus and X-ray detector with variable layer
    Patent number: 10197511
    Abstract: An X-ray computer tomography (CT) apparatus according to an embodiment includes an X-ray source, an X-ray detector, and generating circuitry. The X-ray source radiates X-rays. The X-ray detector includes a scintillator including a first region close to the X-ray source and a second region distant from the X-ray source, an optical sensor that detects scintillator light obtained by converting the X-rays radiated from the X-ray source with the scintillator, and a variable layer that is provided in the scintillator and switchable between a first state in which the variable layer transmits the scintillator light between the first region and the second region and a second state in which the variable layer does not transmit the scintillator light between the first region and the second region. The generating circuitry generates a CT image based on a signal output from the X-ray detector.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: February 5, 2019
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Tooru Kato, Hiroaki Nakai, Mikihito Hayashi
  • Data fidelity weight design for iterative reconstruction
    Patent number: 10198812
    Abstract: A method and apparatus is provided to determine a reconstructed image from computed tomography projection data using iterative reconstruction with an objective function that includes modified weights. The modified weights can include, among other weight values, redundancy weights and statistical weights, which are modified to compress low-frequency components. Additionally, high-frequency components of the statistical weights can be compressed, amplified, or maintained at their current magnitude. The high-frequency components can be subject to a threshold-and-invert step, substituting an inverted value for each high-frequency component above a predefined threshold. Using the modified weights, the reconstructed image can be determined using penalized weighted least squares to minimize the objective function.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: February 5, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Qiulin Tang, Jian Zhou, Zhou Yu
  • PHOTON COUNTING APPARATUS
    Publication number: 20190029622
    Abstract: According to an embodiment, The X-ray tube generates X-rays. The X-ray detector detects the X-rays transmitted through a subject. The data acquisition circuitry acquires count data concerning a count number of the detected X-rays for energy bands. The memory circuitry stores data of a response function that associates incident X-rays on the X-ray detector with a response characteristic of a system including the X-ray detector and the data acquisition circuitry. The processing circuitry calculates an X-ray absorption amount of each of a plurality of base substances based on the count data concerning the energy bands acquired by the data acquisition circuitry, an energy spectrum of the incident X-rays, and the response function.
    Type: Application
    Filed: October 2, 2018
    Publication date: January 31, 2019
    Applicant: Toshiba Medical Systems Corporation
    Inventor: Emi Tamura
  • Method for statistical weights design in iterative reconstruction algorithms
    Patent number: 10192328
    Abstract: A method of computing statistical weights for a computed tomography (CT) iterative reconstruction process is provided. The method includes obtaining detector count data from a CT scan of an object; calculating variance data based on the count data and an electronic noise variance; transforming the calculated variance data to obtain statistical weight data; and performing the CT iterative reconstruction process using the statistical weight data and raw projection data to obtain a reconstructed CT image.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: January 29, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Alexander A. Zamyatin, Daxin Shi, Thomas Labno
  • X-ray computed tomography apparatus including a first X-ray detector and a second X-ray detector for counting X-ray photons
    Patent number: 10182775
    Abstract: An X-ray computed tomography apparatus according to an embodiment stores a plurality of reference count data indicative of energy spectra of X-rays, which are associated with a plurality of tube voltages or tube currents. Estimation circuitry estimates a tube voltage or a tube current at a time of X-ray irradiation, based on a comparison of energy spectra between second count data and each of the plurality of reference count data. Correction circuitry corrects first count data acquired together with the second count data, by using an energy spectrum calculated based on the estimated tube voltage or tube current. Reconstruction circuitry reconstructs medical image data, based on the corrected first count data.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: January 22, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Hiroaki Nakai, Daizo Oikawa
  • Ultrasonic diagnostic apparatus, image processing apparatus, and image processing method
    Patent number: 10182793
    Abstract: An ultrasonic diagnostic apparatus according to an embodiment includes an acquiring unit and a detecting unit. The acquiring unit acquires fluid volume data representing fluid information related to a fluid flowing through a scan region that is a region three-dimensionally scanned by ultrasonic. The detecting unit detects a region that is a fluid existing region in the scanned region using the fluid information, and detects an inner cavity region of a lumen in volume data to be applied with image processing using the region thus detected.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: January 22, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Shunsuke Satoh, Yutaka Kobayashi, Tomokazu Fujii, Masaru Ogasawara, Shogo Fukuda
  • Photon-counting apparatus
    Patent number: 10185044
    Abstract: According to one embodiment, a photon-counting apparatus includes an X-ray tube, an X-ray detector, a support mechanism, setting circuitry and data acquisition circuitry. The X-ray detector is configured to repetitively detect an X-ray photon generated by the X-ray tube, and repetitively generate an electrical signal corresponding to the repetitively detected X-ray photon. The support mechanism is configured to support the X-ray tube to be rotatable about a rotation axis. Setting circuitry configured to set one of a time length of a readout period and a readout cycle per unit time for the electrical signal. Data acquisition circuitry is configured to count a count number of electrical signals from the X-ray detector in accordance with the set one of the time length and readout cycle.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: January 22, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Yasuhiro Noshi, Shuya Nambu
  • X-ray diagnostic apparatus and image processing apparatus
    Patent number: 10178977
    Abstract: According to an embodiment, a grid is provided between an X-ray generator and a flat panel detector. Processing circuitry configured to convert original image based on X-rays having passed through the grid and detected into a plurality of pieces of frequency band data, remove interference fringes contained in at least one piece of frequency band data among the pieces of frequency band data, reduce noise contained in the pieces of frequency band data, correct a scattered radiation of the original image based on a scattered radiation contained in the X-rays having passed through the grid and a scattered radiation contained in X-rays having passed through a grid that removes scattered radiation to a larger extent than the grid, and synthesize a plurality of pieces of frequency band data to generate image.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: January 15, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Hisanori Kato, Yasuhiro Sugawara, Yoshimasa Kobayashi
  • Systems and methods for improved and efficient determination of the specific absorption rate (SAR) in MRI
    Patent number: 10180470
    Abstract: Magnetic resonance imaging (MRI) systems and methods to effect improved and more efficient determination of the specific absorption rate (SAR) are described. The SAR is calculated based upon a derived relationship between a body surface area (BSA) and a portion of the total radio frequency (RF) energy delivered to RF transmit coil that is deposited in the imaging subject, and the scanning is controlled in accordance with the calculated SAR.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: January 15, 2019
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventor: Xin Chen
  • Magnetic resonance imaging apparatus and image processing apparatus
    Patent number: 10180480
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes a sequence controller and a storage unit. The sequence controller acquires magnetic resonance signals of a target imaging part including cerebrospinal fluid flowing therein of a subject in a condition where a supply of oxygen is receivable, at a plurality of time phases in an oxygen inhalation process of the subject. The storage unit stores therein the magnetic resonance signals acquired at the time phases.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: January 15, 2019
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Yasutaka Fushimi, Naotaka Sakashita
  • Sinogram (data) domain pansharpening method and system for spectral CT
    Patent number: 10176603
    Abstract: A hybrid CT dataset is obtained from a combination of an integrating detector and a photon-counting detector. The hybrid CT dataset contains sparse spectral energy data and dense energy integration data. The dense panchromatic data sets inherit the resolution properties of the integrating detector while the sparse spectral data sets inherit the spectral information of the photon-counting detector. Subsequently, the sparse spectral energy data sets are pansharpened based upon at least one dense panchromatic data set that lacks spectral information according to a pansharpening algorithm.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: January 8, 2019
    Assignees: The University of Chicago, Toshiba Medical Systems Corporation
    Inventors: David Rigie, Patrick La Riviere, Adam Petschke, Yuexing Zhang
  • Magnetic resonance imaging apparatus and RF coil device
    Patent number: 10175313
    Abstract: According to one embodiment, an MRI apparatus includes a power transmitting unit, a signal receiving unit and an image reconstruction unit (62). The power transmitting unit wirelessly transmits electric power to an RF coil device by magnetically coupled resonant type wireless power transfer. The signal receiving unit wirelessly receives a digitized nuclear magnetic resonance signal wirelessly transmitted from the RF coil device. The image reconstruction unit obtains a nuclear magnetic resonance signal received by the signal receiving unit, and reconstructs image data of an object on the basis of the nuclear magnetic resonance signal.
    Type: Grant
    Filed: April 7, 2014
    Date of Patent: January 8, 2019
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventor: Kazuya Okamoto