Patents by Inventor Tetsuya Kawagishi
Tetsuya Kawagishi 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).
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Patent number: 12089989Abstract: An analyzing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires a plurality of time-series medical images. The processing circuitry calculates, for each of image pairs each formed of two medical images included in the medical images, a first index value indicating similarity between image signals in the two medical images. The processing circuitry also calculates, on the basis of a plurality of the first index values calculated for the respective image pairs, a second index value corresponding to a statistical value in a time direction of the first index values.Type: GrantFiled: October 25, 2023Date of Patent: September 17, 2024Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Yasunori Honjo, Tetsuya Kawagishi, Masaki Watanabe
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Publication number: 20240050062Abstract: An analyzing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires a plurality of time-series medical images. The processing circuitry calculates, for each of image pairs each formed of two medical images included in the medical images, a first index value indicating similarity between image signals in the two medical images. The processing circuitry also calculates, on the basis of a plurality of the first index values calculated for the respective image pairs, a second index value corresponding to a statistical value in a time direction of the first index values.Type: ApplicationFiled: October 25, 2023Publication date: February 15, 2024Applicant: CANON MEDICAL SYSTEMS CORPORATIONInventors: Yasunori HONJO, Tetsuya KAWAGISHI, Masaki WATANABE
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Publication number: 20240041434Abstract: An analyzing apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to detect a shear wave propagating in an object. The processing circuitry is configured to calculate an index value that indicates viscosity within the object and that is not dependent on any physical model related to viscoelasticity, by analyzing the detected shear wave.Type: ApplicationFiled: October 20, 2023Publication date: February 8, 2024Applicant: CANON MEDICAL SYSTEMS CORPORATIONInventors: Yasunori HONJO, Masaki WATANABE, Tetsuya KAWAGISHI
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Patent number: 11844651Abstract: An analyzing apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to obtain pieces of Doppler image data in a time series rendering a blood flow in an analysis target formed in a blood vessel. The processing circuitry is configured to analyze the pieces of Doppler image data in the time series and to calculate an index value based on temporal changes in a first blood flow signal intensity level in a first region of interest including the blood flow in the analysis target.Type: GrantFiled: June 7, 2019Date of Patent: December 19, 2023Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Yasunori Honjo, Masaki Watanabe, Yu Igarashi, Tetsuya Kawagishi
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Patent number: 11826203Abstract: An analyzing apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to detect a shear wave propagating in an object. The processing circuitry is configured to calculate an index value that indicates viscosity within the object and that is not dependent on any physical model related to viscoelasticity, by analyzing the detected shear wave.Type: GrantFiled: June 22, 2021Date of Patent: November 28, 2023Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Yasunori Honjo, Masaki Watanabe, Tetsuya Kawagishi
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Patent number: 11730444Abstract: An image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to perform a speckle noise reducing process on each of a plurality of images that were acquired by using an ultrasound wave and are in a time series. The processing circuitry is configured to calculate an index value indicating fluttering of image signal intensities in each of multiple positions within a region of interest, on the basis of the plurality of images resulting from the speckle noise reducing process.Type: GrantFiled: May 25, 2018Date of Patent: August 22, 2023Assignee: Canon Medical Systems CorporationInventors: Yasunori Honjo, Masaki Watanabe, Tetsuya Kawagishi, Koichiro Kurita
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Patent number: 11701091Abstract: According to one embodiment, an analysis apparatus includes processing circuitry. The processing circuitry configured to generate a harmonic signal and a fundamental wave signal based on a reception signal that is collected by an ultrasound probe, the harmonic signal corresponding to a harmonic component of a reflected wave of a ultrasound generated in the subject, the fundamental wave signal corresponding to a fundamental wave component of the reflected wave, calculate a first index value indicating tissue properties of the subject based on the harmonic signal, and calculate a second index value indicating the tissue properties based on the fundamental wave signal, and display an analysis result based on the first index value and the second index value.Type: GrantFiled: February 22, 2019Date of Patent: July 18, 2023Assignee: Canon Medical Systems CorporationInventors: Yasunori Honjo, Masaki Watanabe, Tetsuya Kawagishi, Keita Yonemori
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Patent number: 11672506Abstract: An ultrasound diagnosis apparatus according to an embodiment includes an obtaining unit, an image generating unit, and a controlling unit. The obtaining unit obtains setting information in which a plurality of types of ultrasound image data are set as display-purpose image data and in which a percentage of a time period to display the display-purpose image data is set for each of the plurality of types. The image generating unit generates, along a time series, each of the plurality of types of ultrasound image data set in the setting information. The controlling unit exercises control so that the plurality of types of ultrasound image data generated by the image generating unit are stored into a storage unit and exercises control so that the display-purpose image data is displayed on a display unit according to the percentage set in the setting information for each of the types.Type: GrantFiled: December 4, 2014Date of Patent: June 13, 2023Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Cong Yao, Shintaro Niwa, Tetsuya Kawagishi, Yoshitaka Mine
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Publication number: 20230080726Abstract: An ultrasonic diagnosis apparatus according to an embodiment includes a transmission unit, a reception unit, a generator, and a display controller. The transmission unit causes an ultrasonic probe to transmit a displacement-producing ultrasonic wave and causes the probe to transmit a displacement-observing ultrasonic wave. The reception unit generates reflected-wave data based on a reflected wave received by the probe. The generator calculates displacement at each of a plurality of positions in the scan area over a plurality of time phases, based on the reflected-wave data, determines a time phase when the calculated displacement is substantially maximum, for each of the positions, and generates image data representing positions where the determined time phases are substantially the same as each other, among the positions. The display controller superimposes an image based on the image data on a medical image corresponding to an area including the scan area.Type: ApplicationFiled: November 22, 2022Publication date: March 16, 2023Applicant: CANON MEDICAL SYSTEMS CORPORATIONInventors: Masaki WATANABE, Yuko KANAYAMA, Tetsuya KAWAGISHI, Yoshimi MUTO, Eiji GOTO, Koichiro KURITA, Shogo FUKUDA
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Patent number: 11564659Abstract: An ultrasonic diagnostic apparatus according to an embodiment includes transmission circuitry, receiving circuitry and extracting circuitry. The transmission circuitry cause an ultrasonic probe to perform three or more times of ultrasonic wave transmissions, an ultrasonic wave to be transmitted including a center frequency component, a phase of the center frequency component being different in each transmission. The receiving circuitry generates three or more reception signals corresponding to a common reception scanning line based on a plurality of reflected wave signals, the plurality of reflected wave signals being obtained through the three or more times of ultrasonic wave transmissions. The extracting circuitry extracts a nonlinear component included in the three or more reception signals by adding up the three or more reception signals after performing a processing including phase rotation processing on two or more reception signals among the three or more reception signals.Type: GrantFiled: December 11, 2015Date of Patent: January 31, 2023Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Hiroki Yoshiara, Tetsuya Kawagishi, Tomohisa Imamura, Yasunori Honjo, Akihiro Kakee, Yuko Takada
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Patent number: 11534142Abstract: An ultrasonic diagnosis apparatus according to an embodiment includes a transmission unit, a reception unit, a generator, and a display controller. The transmission unit causes an ultrasonic probe to transmit a displacement-producing ultrasonic wave and causes the probe to transmit a displacement-observing ultrasonic wave. The reception unit generates reflected-wave data based on a reflected wave received by the probe. The generator calculates displacement at each of a plurality of positions in the scan area over a plurality of time phases, based on the reflected-wave data, determines a time phase when the calculated displacement is substantially maximum, for each of the positions, and generates image data representing positions where the determined time phases are substantially the same as each other, among the positions. The display controller superimposes an image based on the image data on a medical image corresponding to an area including the scan area.Type: GrantFiled: December 12, 2014Date of Patent: December 27, 2022Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Masaki Watanabe, Yuko Kanayama, Tetsuya Kawagishi, Yoshimi Muto, Eiji Goto, Koichiro Kurita, Shogo Fukuda
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Patent number: 11517288Abstract: An ultrasonic diagnostic apparatus in an embodiment includes processing circuitry. The processing circuitry is configured to cause an ultrasonic probe to perform an ultrasound scan of a subject. The processing circuitry is configured to generate a shadow image by assigning at least one of hue, saturation, and lightness depending on a feature of an acoustic shadow that has appeared in the result of the ultrasound scan.Type: GrantFiled: May 19, 2016Date of Patent: December 6, 2022Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Yu Igarashi, Masaki Watanabe, Yuko Kanayama, Yasunori Honjo, Tetsuya Kawagishi
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Publication number: 20220189613Abstract: An analyzing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires a plurality of time-series medical images. The processing circuitry calculates, for each of image pairs each formed of two medical images included in the medical images, a first index value indicating similarity between image signals in the two medical images. The processing circuitry also calculates, on the basis of a plurality of the first index values calculated for the respective image pairs, a second index value corresponding to a statistical value in a time direction of the first index values.Type: ApplicationFiled: March 4, 2022Publication date: June 16, 2022Applicant: CANON MEDICAL SYSTEMS CORPORATIONInventors: Yasunori HONJO, Tetsuya KAWAGISHI, Masaki WATANABE
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Patent number: 11317896Abstract: An ultrasound diagnosis apparatus includes a calculating unit, an obtaining unit, a determining unit, and a controlling unit. By using a plurality of pieces of three-dimensional ultrasound image data in a time series corresponding to a three-dimensional region including a myocardium of a subject, the calculating unit calculates first movement information indicating a movement of the myocardium by tracking a movement of a region of interest that corresponds to the myocardium and that is set in each of the plurality of pieces of three-dimensional image data. The obtaining unit obtains direction information indicating a direction of a myocardial fiber in the myocardium. The determining unit determines second movement information indicating a movement of the myocardium with respect to the direction of the myocardial fiber, on the basis of the first movement information and the direction information. The controlling unit causes a display unit to display the second movement information.Type: GrantFiled: November 3, 2017Date of Patent: May 3, 2022Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Yasuhiko Abe, Tetsuya Kawagishi
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Patent number: 11298109Abstract: An ultrasonic diagnostic apparatus according to an embodiment includes a candidate-position extracting circuitry and a position setting circuitry. The candidate-position extracting circuitry extracts a first position through comparison of a fundamental wave component between a plurality pieces of image data collected by performing ultrasonic scanning on a subject injected with a contrast agent. The candidate-position extracting circuitry also extracts a second position through comparison of a harmonic component between the pieces of image data. The position setting circuitry sets the first position or the second position as a position of a region of interest where predetermined analysis is performed in at least one image data of the pieces of image data.Type: GrantFiled: September 10, 2015Date of Patent: April 12, 2022Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Cong Yao, Tetsuya Kawagishi, Yoshitaka Mine, Naoki Yoneyama, Hiroki Yoshiara
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Patent number: 11302438Abstract: An analyzing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires a plurality of time-series medical images. The processing circuitry calculates, for each of image pairs each formed of two medical images included in the medical images, a first index value indicating similarity between image signals in the two medical images. The processing circuitry also calculates, on the basis of a plurality of the first index values calculated for the respective image pairs, a second index value corresponding to a statistical value in a time direction of the first index values.Type: GrantFiled: October 3, 2019Date of Patent: April 12, 2022Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Yasunori Honjo, Tetsuya Kawagishi, Masaki Watanabe
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Patent number: 11202619Abstract: An ultrasonic diagnostic apparatus according to an embodiment comprises a data acquisition unit configured to execute ultrasonic scanning for a tissue region throughout a predetermined period and acquire a plurality of image data respectively corresponding to phases in the predetermined period; a positional information acquisition unit configured to acquire positional information of a region of interest in the tissue region at least one phase in the period by executing tracking processing using at least part of the plurality of image data; a shape information calculation unit configured to calculate shape information corresponding to the region of interest at least one phase in the period by using positional information of the region of interest at the at least one phase; and an output unit configured to output the shape information at the at least one phase.Type: GrantFiled: December 9, 2013Date of Patent: December 21, 2021Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Yasuhiko Abe, Hiroyuki Ohuchi, Tetsuya Kawagishi
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Publication number: 20210369247Abstract: A medical image diagnosis apparatus according to an embodiment includes processing circuitry configured to acquire signals from a subject over time, calculate a first similarity representing a similarity of the signals between frames with respect to each of a plurality of frames and a plurality of positions and calculate a second similarity representing a similarity of change of the first similarity over time between the positions, and output the second similarity.Type: ApplicationFiled: May 28, 2021Publication date: December 2, 2021Applicant: CANON MEDICAL SYSTEMS CORPORATIONInventors: Yu IGARASHI, Masaki WATANABE, Yasunori HONJO, Tomohisa IMAMURA, Tetsuya KAWAGISHI
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Publication number: 20210315543Abstract: An analyzing apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to detect a shear wave propagating in an object. The processing circuitry is configured to calculate an index value that indicates viscosity within the object and that is not dependent on any physical model related to viscoelasticity, by analyzing the detected shear wave.Type: ApplicationFiled: June 22, 2021Publication date: October 14, 2021Applicant: CANON MEDICAL SYSTEMS CORPORATIONInventors: Yasunori HONJO, Masaki WATANABE, Tetsuya KAWAGISHI
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Patent number: 11071524Abstract: An analyzing apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to detect a shear wave propagating in an object. The processing circuitry is configured to calculate an index value that indicates viscosity within the object and that is not dependent on any physical model related to viscoelasticity, by analyzing the detected shear wave.Type: GrantFiled: December 2, 2016Date of Patent: July 27, 2021Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Yasunori Honjo, Masaki Watanabe, Tetsuya Kawagishi