Patents Assigned to Toshiba Medical Systems Corporation
  • Automatic analyzer
    Patent number: 10215770
    Abstract: According to one embodiment, an automatic analyzer includes dispenser, measurer, thermostat, cooler and cleaner. Dispenser dispenses a specimen and a reagent into a reaction vessel. Measurer measures a solution mixture of the specimen and the reagent in the vessel. Thermostat heats the mixture to a first temperature at which thermoresponsive polymers contained in the reagent aggregate. Cooler cools a cleaning fluid used to clean the vessel to a second temperature lower than the first temperature, at which the polymers contained in the reagent disperse. Cleaner cleans the vessel from which the mixture has been drained, using the cooled fluid.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: February 26, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Michiaki Takeuchi, Tomomi Muramatsu, Masahiro Masubuchi, Satoshi Matsumoto
  • Image-based point-spread-function modelling in time-of-flight positron-emission-tomography iterative list-mode reconstruction
    Patent number: 10216701
    Abstract: A method of calculating a system matrix for time-of-flight (TOF) list-mode reconstruction of positron-emission tomography (PET) images, the method including determining a TOF geometric projection matrix G including effects of object attenuation; estimating an image-blurring matrix R in image space; obtaining a diagonal matrix D that includes TOF-based normalization factor; and calculating the system matrix H as H=DGR.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: February 26, 2019
    Assignees: The Regents of the University of California, TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Jinyi Qi, Jian Zhou, Hongwei Ye, Wenli Wang
  • Image processing apparatus and magnetic-resonance imaging apparatus
    Patent number: 10215822
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes a processor, and a memory that stores processor-executable instructions. When the instructions are executed by the processor, the instructions cause the processor to give a sample value to at least a part of sampling positions having no sample value in first k-space data so as to create a second k-space data, the first k-space data having a sample value at a part of sampling positions on a k-space. The instructions cause the processor to create a first image from the first k-space data and a second image from the second k-space data. The instructions cause the processor to derive weighting factors for the first image and the second image. The instructions cause the processor to calculate a magnetic resonance image by performing weighted addition using the weighting factors on the first image and the second image.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: February 26, 2019
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventor: Hidenori Takeshima
  • Magnetic resonance imaging apparatus
    Patent number: 10215828
    Abstract: A magnetic resonance imaging apparatus includes a sequence controller. The sequence controller is configured to apply MT (Magnetization Transfer) pulses having a frequency different from a resonance frequency of free water protons and then acquires magnetic resonance signals of an object to be imaged. The sequence controller acquires the magnetic resonance signals for each of multiple frequencies while changing the frequency of MT pulses within a frequency band based on a T2 relaxation time of restricted protons contained in the object to be imaged.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: February 26, 2019
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Mitsue Miyazaki, Cheng Ouyang, Xiangzhi Zhou
  • X-ray computed tomography apparatus and control method
    Patent number: 10217246
    Abstract: An X-ray computed tomography (CT) apparatus includes a detector, and processing circuitry. The detector is configured to output, at each incidence of an X-ray photon, a signal enabling measurement of an energy value of the X-ray photon. Processing circuitry is configured to estimate an energy range to be used for imaging based on an imaging condition and to reconstruct X-ray CT image data using counting information to which an energy value within the energy range is associated among pieces of counting information that are collected from individual signals output by the detector at each incidence of an X-ray photon that has been irradiated from an X-ray tube and has passed through a subject, and in which a counting value and an energy value of X-ray photons incident to the detector are associated with each other.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: February 26, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Takuzo Takayama, Yasuo Saito, Emi Tamura
  • Magnetic resonance imaging apparatus and wireless RF coil apparatus
    Patent number: 10215819
    Abstract: A wireless RF coil unit according to the embodiment includes at least one receiver, a converter, a mixer and a filter. The at least one receiver receive a first analog signal having a first frequency synchronized with a first clock of a device different from the coil unit, and a second analog signal having a second frequency different from the first frequency. The converter converts the first analog signal into a first digital signal, and the second analog signal into a second digital signal, in accordance with a second clock of the coil unit. The mixer generates a multiplication signal of the first digital signal and the second digital signal. The filter passes a predetermined frequency component in the multiplication signal and outputs an intermediated frequency signal.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: February 26, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventor: Kazuyuki Soejima
  • X-ray computed tomography apparatus and gantry
    Patent number: 10206635
    Abstract: According to one embodiment, an X-ray computed tomography apparatus includes a gantry for imaging a subject by X-ray CT and a console communicably connected to the gantry. The gantry includes a gantry body and a column unit. The gantry body has a bore into which the subject is inserted when the subject is imaged by X-ray CT. The column unit includes a first column which supports the gantry body slidably in a direction perpendicular to a floor surface and a second column which supports the first column slidably in a vertical direction.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: February 19, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Yasutaka Shindo, Hiroki Osaki
  • X-ray CT and medical diagnostic apparatus with photon counting detector
    Patent number: 10206638
    Abstract: An X-ray CT apparatus according to an embodiment includes a detector, counted result collecting circuitry, count rate calculating circuitry, control circuitry, and image reconstruction circuitry. The detector includes a plurality of detection elements including a plurality of types of detection elements with different response characteristics to an X-ray dose, and outputs a detection signal according to an incidence of an X-ray photon to each of the detection elements. The counted result collecting circuitry collects counted results obtained by counting X-ray photons from detection signals output by the detection elements. The count rate calculating circuitry calculates a count rate from the detection signals output by the detection elements. The control circuitry selects a detection element based on the count rate and respective response characteristics of the detection elements.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: February 19, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventor: Hiroaki Nakai
  • Medical image diagnostic apparatus and ultrasonic diagnostic apparatus
    Patent number: 10206643
    Abstract: According to one embodiment, a medical image diagnostic apparatus includes an imaging unit, an image generation unit, and a display unit. The imaging unit images a subject injected with blood vessel contrast enhancement particles and diseased tissue contrast enhancement particles. The blood vessel contrast enhancement particles have the first particle size larger than the gap of vascular endothelial cells under the EPR effect. The diseased tissue contrast enhancement particles have the second particle size smaller than the gap. The image generation unit generates a medical image associated with an imaging region of the subject based on output data from the imaging unit. The display unit displays the medical image.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: February 19, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventor: Hitoshi Yamagata
  • Image processing apparatus, image processing method, and computer program product
    Patent number: 10210611
    Abstract: An image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to obtain a value of an index related to a predetermined disease for each of a plurality of sites included in a brain of a patient, on the basis of a plurality of pieces of medical image data obtained by imaging the brain of the patient at each of a plurality of points in time. The processing circuitry is configured to analyze, for each of the plurality of sites, a relationship between changes in the value at the plurality of points in time and a progress model indicating changes in the index through progress of the predetermined disease. The processing circuitry is configured to output an analysis result obtained from the analysis for each of the plurality of sites.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: February 19, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Ryo Shiroishi, Tomohiro Kawasaki, Yasuko Fujisawa
  • X-ray computed tomography imaging apparatus and gantry apparatus
    Patent number: 10206640
    Abstract: According to one embodiment, an X ray computed tomography imaging apparatus includes a gantry and a column. The gantry includes a first gantry intake port, and a second gantry intake port. The first gantry intake port draws air in the first state. The second gantry intake port draws air in the second state. The column includes a first column exhaust port and a second column exhaust port. The first column exhaust port communicates with the first gantry intake port in the first state. The second column exhaust port communicates with the second gantry intake port in the second state.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: February 19, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventor: Hiroshi Hori
  • X-ray diagnostic apparatus
    Patent number: 10206636
    Abstract: According to one embodiment, an X-ray diagnostic apparatus includes a first apparatus, a second apparatus, movement instruction input circuitry and control circuitry. In accordance with a movement instruction, the control circuitry is configured to control the first and second apparatuses so that the first apparatus can be moved to the target position. The control circuitry is configured to perform a retraction operation and a restoration operation. The retraction operation is an operation in which the first apparatus starts moving toward the target position and continues to move toward the target position, with the second apparatus retracted. The restoration operation is an operation in which the second apparatus is returned to the original position while avoiding the collision with the first apparatus.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: February 19, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventor: Yoshiyasu Hayashi
  • Image processing apparatus, image processing method, and storage medium
    Patent number: 10206587
    Abstract: An image processing apparatus according to an embodiment includes a processing circuitry. The processing circuitry is configured to obtain images in a time series including images of a blood vessel of a subject and correlation information indicating a correlational relationship between physical indices of the blood vessel and function indices of the blood vessel related to vascular hemodynamics, calculate blood vessel morphology indices in a time series indicating morphology of the blood vessel of the subject, on a basis of the images in the time series, and identify a function index of the blood vessel of the subject, by using a physical index of the blood vessel of the subject obtained from the blood vessel morphology indices, on a basis of the correlation information.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: February 19, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Akira Kano, Kenji Hirohata, Junichiro Ooga, Mitsuaki Kato, Takuya Hongo, Akihiro Goryu, Shigeo Kaminaga, Yasuko Fujisawa, Satoshi Wakai, Yoshihiro Ikeda, Kazumasa Arakita
  • Image display method, medical diagnostic imaging apparatus, and medical image processing apparatus
    Patent number: 10210309
    Abstract: Setting information in which a sequence with medical meaning is set as the sequence of viewing a plurality of medical image data is read from a portable medium. Moreover, in accordance with the sequence set in the setting information, a plurality of medical image data stored in the portable medium is replicated into a storage unit of a terminal device as replicated medical image data. Furthermore, before replication of all of the medical image data stored in the portable medium is finished, reception of an output instruction is started. Replicated medical image data corresponding to medical image data specified in the output instruction is then output to an output unit.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: February 19, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Takashi Kondo, Hiromasa Yamagishi, Teruhiko Ebina
  • ULTRASONIC DIAGNOSTIC APPARATUS
    Publication number: 20190046153
    Abstract: An ultrasonic diagnostic apparatus according to the present embodiment includes an ultrasonic probe, image generation circuitry, acquisition circuitry, calculation circuitry, guide image generation circuitry, and control circuitry. The ultrasonic probe transmits ultrasonic waves, and receives reflected waves. The image generation circuitry generates cross-section image data based on the reflected waves. The acquisition circuitry acquires, from volume data corresponding to three-dimensional region containing a blood vessel inside the subject, cross-section position information corresponding to the cross-section image data. The calculation circuitry calculates collection position information in the volume data based on a running direction of a blood vessel contained in the volume data, the collection position information corresponding to a position from which blood flow velocity information is collected.
    Type: Application
    Filed: October 17, 2018
    Publication date: February 14, 2019
    Applicant: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Go TANAKA, Kazuya AKAKI, Eiji GOTO, Koichiro KURITA, Yu IGARASHI
  • Magnetic resonance imaging apparatus and image processing apparatus
    Patent number: 10201280
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to specify a search start position of a matrix representing inter-regional connectivity between a plurality of regions in a brain based on a result of an analysis on an image of a subject and an attention degree set to each of the regions. The processing circuitry is configured to search the matrix using the search start position.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: February 12, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Hitoshi Yamagata, Masao Yui
  • Magnetic resonance imaging apparatus and magnetic resonance imaging method
    Patent number: 10203385
    Abstract: A magnetic resonance apparatus of the present embodiment includes: a gantry which includes a static field magnet, a gradient coil and an RF coil to image an object; processing circuitry; a memory that stores processor-executable instructions that, when executed by the processing circuitry, cause the processing circuitry to detect at least one position of an aortic valve and a pulmonary valve from three-dimensional image data including a heart of the object, as at least one characteristic region inside the heart, specify a position of an imaging cross-section substantially orthogonal to a bloodstream path inside the heart based on the position of the aortic valve or the pulmonary valve, and cause the gantry to image the imaging cross-section of the object at the specified position of the imaging cross-section.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: February 12, 2019
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Shigehide Kuhara, Shuhei Nitta, Taichiro Shiodera, Yukinobu Sakata, Tomoyuki Takeguchi
  • Magnetic resonance imaging apparatus, medical image processing device, and image processing method
    Patent number: 10204412
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes processing circuitry. The processing circuitry generates an image based on a magnetic resonance signal from a subject. The processing circuitry generates a susceptibility image representing magnetic susceptibility of the subject from a phase component contained in a plurality of pixels in the image. The processing circuitry generates an artifact component of the susceptibility image based on a frequency signal obtained by frequency transform of the susceptibility image. The processing circuitry generates an artifact component-removed susceptibility image by removing the artifact component from a susceptibility image generated based on the magnetic resonance signal.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: February 12, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Taichiro Shiodera, Takamasa Sugiura, Tomoyuki Takeguchi, Masao Yui, Naotaka Sakashita
  • Magnetic resonance imaging apparatus and magnetic resonance imaging method
    Patent number: 10203388
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes control circuitry and processing circuitry. The control circuitry executes a first pulse sequence performing MR (Magnetic Resonance) spectroscopy and configured to execute a second pulse sequence applying an MT (Magnetization Transfer) pulse. The processing circuitry causes a display to present first data acquired based on the first pulse sequence and second data acquired based on the second pulse sequence.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: February 12, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Mitsue Miyazaki, Xiangzhi Zhou
  • Fast iterative reconstruction with one backprojection and no forward projection
    Patent number: 10204425
    Abstract: A method and apparatus is provided to reconstruct a computed tomography image from projection data using windowed filtered back-projection (FBP) and using regularization constraints that can be quadratic or non-quadratic. The method emulates multiple Landweber iterations using a single windowed FBP operation and then iterates between imposing regularization constraints and a single windowed FBP operation. This windowed FBP operation is only performed once. The regularization constraints can be imposed using edge-preserving denoising methods, including, e.g., a Huber filter, a median filter, a bilateral filter, a guided filter, a non-local means filter, a total-variation minimization regularizer, other known regularizer, or an anisotropic diffusion filter. The entire procedure contains no forward projection and contains only one back-projection.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: February 12, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Gengsheng Lawrence Zeng, Qiulin Tang, Zhou Yu