Patents by Inventor Takehiro Tsujita

Takehiro Tsujita 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: 20190370947
    Abstract: According to one embodiment, a depth map used for a reflection model is generated based on a power image as a blood flow image. A reflection image is generated from the depth map according to the reflection model. By synthesizing the reflection image 70 with the power image, a weighted power image is generated. Using the same method as described above, a weighted velocity image may be generated.
    Type: Application
    Filed: March 22, 2019
    Publication date: December 5, 2019
    Inventor: Takehiro Tsujita
  • Patent number: 10016181
    Abstract: Provided is an ultrasound diagnostic apparatus capable of creating a three-dimensional image that expresses the shading effect due to leakage, absorption or others of light. The apparatus displays a three-dimensional image of an object based on luminance volume data, and includes: a light source information setting unit configured to set light source data indicating a property of a light source that is set in a three-dimensional space; an optical property setting unit configured to set a weight coefficient indicating an optical property of the luminance volume data with respect to the light source; an illuminance calculation unit configured to calculate an illuminance at a position corresponding to a coordinate of the luminance volume data, based on the optical data and the weight coefficient, and to create illuminance volume data based on the calculated illuminance; and a volume rendering unit configured to create the three-dimensional image from the data.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: July 10, 2018
    Assignee: HITACHI, LTD.
    Inventor: Takehiro Tsujita
  • Patent number: 9786040
    Abstract: An ultrasound diagnostic apparatus includes a light source information setting unit setting light source data indicating a property of a light source irradiated to a cross section region of the object, an optical property setting unit setting a weight coefficient indicating an optical property of cross-section region data including intensity information on the cross section region to the light source, an illuminance slice data creation unit calculating illuminance at positions corresponding to coordinates of a plurality of the cross-section regions based on the light source data and the weight coefficient, and creating illuminance slice data of the plurality of the cross-section regions based on the calculated illuminance, and a composition unit compositing a two-dimensional cross-section image of the object from the plurality of illuminance slice data.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: October 10, 2017
    Assignee: HITACHI, LTD.
    Inventor: Takehiro Tsujita
  • Patent number: 9514564
    Abstract: For generating ultrasonic projection images in which various kind of ultrasonic projection images have been appropriately combined, the invention is provided with: a storage unit that stores tomographic image volume data and elastic image volume data; a volume rendering unit that generates tomographic projection images by volume rendering on the basis of the tomographic image volume data; a display device that displays the ultrasonic projection images generated by the volume rendering unit; and an operation unit for inputting commands to control the volume rendering unit. For one of the rendering spaces partitioned by a cutting plane set in the rendering space by a command input from the operation unit, the volume rendering unit renders voxels of tomographic image volume data corresponding to the voxels of elastic image volume data that have elasticity values satisfying a set threshold value, and generates and displays the tomographic projection image on the display device.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: December 6, 2016
    Assignee: HITACHI MEDICAL CORPORATION
    Inventor: Takehiro Tsujita
  • Publication number: 20160038124
    Abstract: Provided is an ultrasound diagnostic apparatus capable of creating a three-dimensional image that expresses the shading effect due to leakage, absorption or others of light. The apparatus displays a three-dimensional image of an object based on luminance volume data, and includes: a light source information setting unit configured to set light source data indicating a property of a light source that is set in a three-dimensional space; an optical property setting unit configured to set a weight coefficient indicating an optical property of the luminance volume data with respect to the light source; an illuminance calculation unit configured to calculate an illuminance at a position corresponding to a coordinate of the luminance volume data, based on the optical data and the weight coefficient, and to create illuminance volume data based on the calculated illuminance; and a volume rendering unit configured to create the three-dimensional image from the data.
    Type: Application
    Filed: September 12, 2013
    Publication date: February 11, 2016
    Inventor: Takehiro TSUJITA
  • Publication number: 20160030007
    Abstract: An ultrasonic diagnostic device and ultrasonic three-dimensional image generation method generate a three-dimensional image by expressing interaction by dispersion, absorption, or the like of light in tissue or between tissues. The ultrasonic diagnostic device displays a three-dimensional image of a target object based on at least one piece of volume data among luminance volume data, blood flow volume data, and elasticity volume data.
    Type: Application
    Filed: April 11, 2014
    Publication date: February 4, 2016
    Inventor: Takehiro TSUJITA
  • Patent number: 9247922
    Abstract: Provided is an ultrasonic diagnostic apparatus configured to appropriately display a region of interest that is intended to be observed in a 3-dimensional elastic image, and also provided is an ultrasonic image display method. The ultrasonic diagnostic apparatus includes an elastic opacity table creating section for creating, on the basis of the elasticity values, an elastic opacity table used for setting an opacity in the volume rendering of the elastic volume data.
    Type: Grant
    Filed: November 25, 2010
    Date of Patent: February 2, 2016
    Assignee: HITACHI MEDICAL CORPORATION
    Inventor: Takehiro Tsujita
  • Publication number: 20150248750
    Abstract: An ultrasound diagnostic apparatus includes a light source information setting unit setting light source data indicating a property of a light source irradiated to a cross section region of the object, an optical property setting unit setting a weight coefficient indicating an optical property of cross-section region data including intensity information on the cross section region to the light source, an illuminance slice data creation unit calculating illuminance at positions corresponding to coordinates of a plurality of the cross-section regions based on the light source data and the weight coefficient, and creating illuminance slice data of the plurality of the cross-section regions based on the calculated illuminance, and a composition unit compositing a two-dimensional cross-section image of the object from the plurality of illuminance slice data.
    Type: Application
    Filed: September 12, 2013
    Publication date: September 3, 2015
    Inventor: Takehiro Tsujita
  • Patent number: 8988462
    Abstract: In order to provide an ultrasonic diagnostic apparatus and an ultrasonic image display method for appropriately displaying a three-dimensional elastic image, a three-dimensional blood flow image, and a three-dimensional tomographic image such that the images can be separately recognized, the ultrasonic diagnostic apparatus includes projected image creation units that create a plurality of projected images from the plurality of types of volume data and a projected image combination unit that creates a composite projected image by combining the plurality of projected images on the basis of a predetermined combination rate, and the display unit displays the composite projected image.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: March 24, 2015
    Assignee: Hitachi Medical Corporation
    Inventor: Takehiro Tsujita
  • Patent number: 8948485
    Abstract: In order to generate a three-dimensional tomographic image in which the visibility of specific tissue that an examiner wants is enhanced, an ultrasonic diagnostic apparatus 100 of the present invention includes: an offset calculating section 16 which increases or decreases the brightness value of each voxel according to the brightness value of each voxel of a three-dimensional tomographic image volume data. The amount of increase or decrease in the brightness value of each voxel of the offset calculating section is adjustable through a control panel 26, and a tomographic image volume rendering section generates the three-dimensional tomographic image on the basis of a three-dimensional tomographic image volume data in which the brightness value is offset by the offset calculating section.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: February 3, 2015
    Assignee: Hitachi Medical Corporation
    Inventor: Takehiro Tsujita
  • Patent number: 8617075
    Abstract: An ultrasonic diagnostic apparatus is disclosed for imaging 3-dimensional images by irradiating ultrasonic waves to an object and reconstructing the 3-dimensional image. The ultrasonic diagnostic apparatus includes an ultrasonic probe for transmitting/receiving ultrasonic waves to/from an object to be examined, an ultrasonic image construction unit for constructing a 3-dimensional ultrasonic image based on the 3-dimensional ultrasonic image data from the ultrasonic signals received from the ultrasonic probe, and a display unit for displaying the 3-dimensional ultrasonic image. A position sensor is provided for detecting the position of the ultrasonic probe. A positional information analyzing unit stores the first position of the ultrasonic probe obtained from the position sensor and analyzes the positional relationship between the first position and the second position.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: December 31, 2013
    Assignee: Hitachi Medical Corporation
    Inventors: Takehiro Tsujita, Tetsuya Hayashi
  • Publication number: 20130271455
    Abstract: Provided is a technology capable of obtaining at high speed a three-dimensional image having good image quality, without increasing the load on an ultrasonic diagnostic device. A plurality of filter processing having different effects are performed, prior to rendering, on tomographic volume data that has completed coordinate transformation, and volume data is obtained for each. A prescribed weight is added to each voxel for each of the obtained volume data, and a three-dimensional image is generated from the volume data obtained thereby. The filter processing having different effects may be different types of filter processing such as smoothing and sharpening, the same filter processing but having different strengths, or a combination of filter processing and no filter processing.
    Type: Application
    Filed: January 19, 2012
    Publication date: October 17, 2013
    Applicant: HITACHI MEDICAL CORPORATION
    Inventor: Takehiro Tsujita
  • Publication number: 20130194267
    Abstract: For generating ultrasonic projection images in which various kind of ultrasonic projection images have been appropriately combined, the invention is provided with: a storage unit that stores tomographic image volume data and elastic image volume data; a volume rendering unit that generates tomographic projection images by volume rendering on the basis of the tomographic image volume data; a display device that displays the ultrasonic projection images generated by the volume rendering unit; and an operation unit for inputting commands to control the volume rendering unit. For one of the rendering spaces partitioned by a cutting plane set in the rendering space by a command input from the operation unit, the volume rendering unit renders voxels of tomographic image volume data corresponding to the voxels of elastic image volume data that have elasticity values satisfying a set threshold value, and generates and displays the tomographic projection image on the display device.
    Type: Application
    Filed: July 28, 2011
    Publication date: August 1, 2013
    Applicant: HITACHI MEDICAL CORPORATION
    Inventor: Takehiro Tsujita
  • Publication number: 20120287156
    Abstract: In order to provide an ultrasonic diagnostic apparatus and an ultrasonic image display method for appropriately displaying a three-dimensional elastic image, a three-dimensional blood flow image, and a three-dimensional tomographic image such that the images can be separately recognized, the ultrasonic diagnostic apparatus includes projected image creation units that create a plurality of projected images from the plurality of types of volume data and a projected image combination unit that creates a composite projected image by combining the plurality of projected images on the basis of a predetermined combination rate, and the display unit displays the composite projected image.
    Type: Application
    Filed: February 3, 2011
    Publication date: November 15, 2012
    Applicant: HITACHI MEDICAL CORPORATION
    Inventor: Takehiro Tsujita
  • Publication number: 20120259223
    Abstract: Provided is an ultrasonic diagnostic apparatus configured to appropriately display a region of interest that is intended to be observed in a 3-dimensional elastic image, and also provided is an ultrasonic image display method. The ultrasonic diagnostic apparatus includes an elastic opacity table creating section for creating, on the basis of the elasticity values, an elastic opacity table used for setting an opacity in the volume rendering of the elastic volume data.
    Type: Application
    Filed: November 25, 2010
    Publication date: October 11, 2012
    Applicant: HITACHI MEDICAL CORPORATION
    Inventor: Takehiro Tsujita
  • Publication number: 20120203108
    Abstract: An ultrasonic diagnostic apparatus is provided with: an ultrasonic probe which is brought into contact with an object to transmit and receive ultrasonic waves; a transmission unit and a reception unit which periodically transmit and receive the ultrasonic waves to and from the object and subject a reflection echo signal from the object to reception processing; a displacement measurement unit which sequentially finds the displacements of a living organism tissue at the position of cross section at which the ultrasonic waves are transmitted to and received from the object; an elasticity image construction unit which sequentially constructs the elasticity images of the living organism tissue; and a three-dimensional image construction unit which constructs a three-dimensional elasticity image.
    Type: Application
    Filed: October 15, 2010
    Publication date: August 9, 2012
    Applicant: HITACHI MEDICAL CORPORATION
    Inventor: Takehiro Tsujita
  • Publication number: 20120087564
    Abstract: In order to generate a three-dimensional tomographic image in which the visibility of specific tissue that an examiner wants is enhanced, an ultrasonic diagnostic apparatus 100 of the present invention includes: an offset calculating section 16 which increases or decreases the brightness value of each voxel according to the brightness value of each voxel of a three-dimensional tomographic image volume data. The amount of increase or decrease in the brightness value of each voxel of the offset calculating section is adjustable through a control panel 26, and a tomographic image volume rendering section generates the three-dimensional tomographic image on the basis of a three-dimensional tomographic image volume data in which the brightness value is offset by the offset calculating section.
    Type: Application
    Filed: June 4, 2010
    Publication date: April 12, 2012
    Applicant: HITACHI MEDICAL CORPORATION
    Inventor: Takehiro Tsujita
  • Publication number: 20110224549
    Abstract: When a series of plural data processes are processed by different processors, the need to harmonize the processing cycles between the respective processors and adjust the processing time is obviated. The invention includes a data conversion section 20 that generates ultrasonic image data using RF data based on reflected echo signals received from a subject. The data conversion section 20 includes a plurality of processors 20a to 20h that perform a series of data processes related to an ultrasonic measurement mode and a buffer memory 20m that stores the processing results. The respective processors 20a to 20h perform processes that are assigned to them in accordance with a write request of their own processor, write the processing results in the buffer memory 20m, and read the processing results written in the buffer memory 20m in accordance with a read request of other processors.
    Type: Application
    Filed: November 10, 2009
    Publication date: September 15, 2011
    Applicant: HITACHI MEDICAL CORPORATION
    Inventor: Takehiro Tsujita
  • Publication number: 20090209859
    Abstract: An ultrasonic diagnostic apparatus includes an ultrasonic probe 2 for transmitting/receiving ultrasonic waves to/from an object to be examined, ultrasonic image construction unit 7 for constructing a 3-dimensional ultrasonic image based on the 3-dimensional ultrasonic image data from the ultrasonic signals received from the ultrasonic probe 2, and display unit 7 for displaying the 3-dimensional ultrasonic image. The ultrasonic diagnostic apparatus further includes: position sensor 4 for detecting the position of the ultrasonic probe; and positional information analyzing unit 6 for storing the first position of the ultrasonic probe 2 obtained from the position sensor 4 and analyzing the positional relationship between the first position and the second position.
    Type: Application
    Filed: February 9, 2006
    Publication date: August 20, 2009
    Inventors: Takehiro Tsujita, Tetsuya Hayashi