Patents by Inventor Hideaki Ishii
Hideaki Ishii 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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Blood vessel analysis apparatus, medical image diagnosis apparatus, and blood vessel analysis method
Patent number: 10249043Abstract: According to one embodiment, a structuring circuitry temporarily structures a dynamical model of analysis processing based on the time-series medical image. The identification circuitry identifies a latent variable of the dynamical model so that at least one of a prediction value of a blood vessel morphology and a prediction value of a bloodstream based on the temporarily structured dynamical model is in conformity with at least one of an observation value of the blood vessel morphology and an observation value of the bloodstream measured in advance. The analysis circuitry analyzes the dynamical model to which the identified latent variable is allocated.Type: GrantFiled: February 14, 2018Date of Patent: April 2, 2019Assignee: Toshiba Medical Systems CorporationInventors: Junichiro Ooga, Kenji Hirohata, Shigeo Kaminaga, Yasuko Fujisawa, Satoshi Wakai, Kazumasa Arakita, Takuma Igarashi, Hideaki Ishii -
Patent number: 10159448Abstract: An X-ray CT apparatus according to an embodiment includes processing circuitry. The processing circuitry collects pieces of image data in a plurality of time phases that contain at least a part of a coronary artery of a heart. The processing circuitry acquires image indexes regarding the pieces of image data. The processing circuitry extracts a set of image data from combinations of pieces of image data having a larger time interval than a predetermined time interval, of the pieces of image data, based on the image indexes in the respective pieces of image data. The processing circuitry performs fluid analysis regarding the coronary artery based on the extracted set of image data to obtain a fluid parameter regarding the coronary artery.Type: GrantFiled: June 5, 2017Date of Patent: December 25, 2018Assignee: Toshiba Medical Systems CorporationInventors: Hideaki Ishii, Takuya Sakaguchi, Kazumasa Arakita
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Publication number: 20180303447Abstract: The medical image diagnostic apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to: generate medical volume data including bones and an organ; identify, based on the volume data, the organ and an abnormal bone having an abnormal region of the bones; calculate, based on the organ and the abnormal bone of the volume data, an influence rate on the organ by the abnormal bone; and superimpose data indicating the influence rate on the image based on the volume data, thereby displaying the superimposed image on a display.Type: ApplicationFiled: April 5, 2018Publication date: October 25, 2018Applicant: CANON MEDICAL SYSTEMS CORPORATIONInventors: Hideaki ISHII, Yasuyuki MIYOSHI, Yukari SONE
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Patent number: 10020982Abstract: The failure isolation method includes: a first step of performing a predetermined action for the monitoring target, collecting a failure event which is a result of the action, applying the failure event to a failure cause analysis rule, and narrowing down the root cause events together with certainty factors; a second step of determining whether the root cause event and the certainty factor narrowed down in the first step satisfy a predetermined requirement and whether the narrowing-down has been completed; and a third step of, when it is determined in the second step that the narrowing-down has not been completed, performing a predetermined additional action for the monitoring target, collecting an additional failure event which is a result of the additional action, applying the additional failure event to the failure cause analysis rule, and narrowing down the root cause events together with the certainty factors.Type: GrantFiled: March 16, 2016Date of Patent: July 10, 2018Assignee: Hitachi, Ltd.Inventors: Atsushi Iwamura, Yoshiko Yasuda, Hideaki Tsushima, Hideaki Ishii, Atsushi Komatsuzawa
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BLOOD VESSEL ANALYSIS APPARATUS, MEDICAL IMAGE DIAGNOSIS APPARATUS, AND BLOOD VESSEL ANALYSIS METHOD
Publication number: 20180174297Abstract: According to one embodiment, a structuring circuitry temporarily structures a dynamical model of analysis processing based on the time-series medical image. The identification circuitry identifies a latent variable of the dynamical model so that at least one of a prediction value of a blood vessel morphology and a prediction value of a bloodstream based on the temporarily structured dynamical model is in conformity with at least one of an observation value of the blood vessel morphology and an observation value of the bloodstream measured in advance. The analysis circuitry analyzes the dynamical model to which the identified latent variable is allocated.Type: ApplicationFiled: February 14, 2018Publication date: June 21, 2018Applicant: Toshiba Medical Systems CorporationInventors: Junichiro Ooga, Kenji Hirohata, Shigeo Kaminaga, Yasuko Fujisawa, Satoshi Wakai, Kazumasa Arakita, Takuma Igarashi, Hideaki Ishii -
Patent number: 9940736Abstract: According to one embodiment, a medical image diagnostic apparatus includes a storage memory, processing circuitry, and a display. The storage memory stores data of a plurality of FFR distribution maps constituting a time series regarding a coronary artery, and data of a plurality of morphological images corresponding to the time series. The processing circuitry converts the plurality of FFR distribution maps into a plurality of corresponding color maps, respectively. The display displays a plurality of superposed images obtained by superposing the plurality of color maps and the plurality of morphological images respectively corresponding in phase to the plurality of color maps. The display restricts display targets for the plurality of color maps based on the plurality of FFR distribution maps or the plurality of morphological images.Type: GrantFiled: July 18, 2017Date of Patent: April 10, 2018Assignee: Toshiba Medical Systems CorporationInventors: Hideaki Ishii, Satoshi Wakai, Kazumasa Arakita, Takuma Igarashi, Yasuko Fujisawa, Shigeo Kaminaga, Kenji Hirohata, Junichiro Ooga
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Blood vessel analysis apparatus, medical image diagnosis apparatus, and blood vessel analysis method
Patent number: 9928593Abstract: According to one embodiment, a structuring circuitry temporarily structures a dynamical model of analysis processing based on the time-series medical image. The identification circuitry identifies a latent variable of the dynamical model so that at least one of a prediction value of a blood vessel morphology and a prediction value of a bloodstream based on the temporarily structured dynamical model is in conformity with at least one of an observation value of the blood vessel morphology and an observation value of the bloodstream measured in advance. The analysis circuitry analyzes the dynamical model to which the identified latent variable is allocated.Type: GrantFiled: June 5, 2015Date of Patent: March 27, 2018Assignee: Toshiba Medical Systems CorporationInventors: Junichiro Ooga, Kenji Hirohata, Shigeo Kaminaga, Yasuko Fujisawa, Satoshi Wakai, Kazumasa Arakita, Takuma Igarashi, Hideaki Ishii -
Publication number: 20180082445Abstract: According to one embodiment, a medical image diagnostic apparatus includes a storage memory, processing circuitry, and a display. The storage memory stores data of a plurality of FFR distribution maps constituting a time series regarding a coronary artery, and data of a plurality of morphological images corresponding to the time series. The processing circuitry converts the plurality of FFR distribution maps into a plurality of corresponding color maps, respectively. The display displays a plurality of superposed images obtained by superposing the plurality of color maps and the plurality of morphological images respectively corresponding in phase to the plurality of color maps. The display restricts display targets for the plurality of color maps based on the plurality of FFR distribution maps or the plurality of morphological images.Type: ApplicationFiled: November 10, 2017Publication date: March 22, 2018Applicant: TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Hideaki ISHII, Satoshi WAKAI, Kazumasa ARAKITA, Takuma IGARASHI, Yasuko FUJISAWA, Shigeo KAMINAGA, Kenji HIROHATA, Junichiro OOGA
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Publication number: 20180018771Abstract: There is provided a medical image processing apparatus which includes a first extraction unit configured to extract coronary arteries depicted in images of a plurality of time phases relating to the heart, and to extract at least one stenosed part depicted in each coronary artery; a calculation unit configured to calculate a pressure gradient of each of the extracted coronary arteries, based on tissue blood flow volumes of the coronary arteries; a second extraction unit configured to extract an ischemic region depicted in the images; and a specifying unit configured to specify a responsible blood vessel of the ischemic region by referring to a dominance map, in which each of the extracted coronary arteries and a dominance territory are associated, for the extracted ischemic region, and to specify a responsible stenosis, based on the pressure gradient corresponding to a stenosed part in the specified responsible blood vessel.Type: ApplicationFiled: September 26, 2017Publication date: January 18, 2018Applicant: Toshiba Medical Systems CorporationInventors: Takuma IGARASHI, Satoshi Wakai, Kazumasa Arakita, Hideaki Ishii, Yasuko Fujisawa, Shigeo Kaminaga, Kenji Hirohata, Junichiro Ooga
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Publication number: 20170347973Abstract: A medical information processing apparatus according to an embodiment includes processing circuitry. The processing circuitry collects pieces of past image data in a plurality of time phases that contain at least a part of a coronary artery of a heart and new image data in one time phase that contains at least a part of the coronary artery and has been acquired after acquisition of the pieces of past image data. The processing circuitry performs registration processing between the pieces of collected past image data and registration processing between any one of the pieces of past image data and the new image data. The processing circuitry generates pieces of synthesized image data corresponding to the time phases of the pieces of past image data other than the past image data on which the registration processing with the new image data has been executed by reflecting a shape of the new image data based on results of the registration processing.Type: ApplicationFiled: June 5, 2017Publication date: December 7, 2017Applicant: Toshiba Medical Systems CorporationInventors: Hideaki ISHII, Takuya Sakaguchi, Kazumasa Arakita
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Publication number: 20170347975Abstract: An X-ray CT apparatus according to an embodiment includes processing circuitry. The processing circuitry collects pieces of image data in a plurality of time phases that contain at least a part of a coronary artery of a heart. The processing circuitry acquires image indexes regarding the pieces of image data. The processing circuitry extracts a set of image data from combinations of pieces of image data having a larger time interval than a predetermined time interval, of the pieces of image data, based on the image indexes in the respective pieces of image data. The processing circuitry performs fluid analysis regarding the coronary artery based on the extracted set of image data to obtain a fluid parameter regarding the coronary artery.Type: ApplicationFiled: June 5, 2017Publication date: December 7, 2017Applicant: Toshiba Medical Systems CorporationInventors: Hideaki ISHII, Takuya Sakaguchi, Kazumasa Arakita
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Patent number: 9811907Abstract: There is provided a medical image processing apparatus which includes a first extraction unit configured to extract coronary arteries depicted in images of a plurality of time phases relating to the heart, and to extract at least one stenosed part depicted in each coronary artery; a calculation unit configured to calculate a pressure gradient of each of the extracted coronary arteries, based on tissue blood flow volumes of the coronary arteries; a second extraction unit configured to extract an ischemic region depicted in the images; and a specifying unit configured to specify a responsible blood vessel of the ischemic region by referring to a dominance map, in which each of the extracted coronary arteries and a dominance territory are associated, for the extracted ischemic region, and to specify a responsible stenosis, based on the pressure gradient corresponding to a stenosed part in the specified responsible blood vessel.Type: GrantFiled: May 29, 2015Date of Patent: November 7, 2017Assignee: Toshiba Medical Systems CorporationInventors: Takuma Igarashi, Satoshi Wakai, Kazumasa Arakita, Hideaki Ishii, Yasuko Fujisawa, Shigeo Kaminaga, Kenji Hirohata, Junichiro Ooga
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Publication number: 20170316587Abstract: According to one embodiment, a medical image diagnostic apparatus includes a storage memory, processing circuitry, and a display. The storage memory stores data of a plurality of FFR distribution maps constituting a time series regarding a coronary artery, and data of a plurality of morphological images corresponding to the time series. The processing circuitry converts the plurality of FFR distribution maps into a plurality of corresponding color maps, respectively. The display displays a plurality of superposed images obtained by superposing the plurality of color maps and the plurality of morphological images respectively corresponding in phase to the plurality of color maps. The display restricts display targets for the plurality of color maps based on the plurality of FFR distribution maps or the plurality of morphological images.Type: ApplicationFiled: July 18, 2017Publication date: November 2, 2017Applicant: Toshiba Medical Systems CorporationInventors: Hideaki ISHII, Satoshi WAKAI, Kazumasa ARAKITA, Takuma IGARASHI, Yasuko FUJISAWA, Shigeo KAMINAGA, Kenji HIROHATA, Junichiro OOGA
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Patent number: 9786068Abstract: According to one embodiment, a medical image diagnostic apparatus includes a storage memory, processing circuitry, and a display. The storage memory stores data of a plurality of FFR distribution maps constituting a time series regarding a coronary artery, and data of a plurality of morphological images corresponding to the time series. The processing circuitry converts the plurality of FFR distribution maps into a plurality of corresponding color maps, respectively. The display displays a plurality of superposed images obtained by superposing the plurality of color maps and the plurality of morphological images respectively corresponding in phase to the plurality of color maps. The display restricts display targets for the plurality of color maps based on the plurality of FFR distribution maps or the plurality of morphological images.Type: GrantFiled: August 19, 2016Date of Patent: October 10, 2017Assignee: Toshiba Medical Systems CorporationInventors: Hideaki Ishii, Satoshi Wakai, Kazumasa Arakita, Takuma Igarashi, Yasuko Fujisawa, Shigeo Kaminaga, Kenji Hirohata, Junichiro Ooga
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Publication number: 20170288507Abstract: A fan motor including: a motor body; a fan; a controller that includes a circuit board and a circuit element; a heat sink that is attached to the controller and that includes a heat dissipating section; a case body that includes a motor holder, and a center piece supporting the stator, with the heat dissipating section disposed between the center piece and the motor holder and the center piece forming an airflow passage along which airflow passes; an introduction section through which airflow flowing toward the heat dissipating section is introduced; a discharge section through which the airflow that has been introduced through the introduction section is discharged toward the fan side; and a facing section that is disposed at a downstream side of the airflow with respect to the heat dissipating section and that extends in a direction to obstruct the airflow.Type: ApplicationFiled: February 1, 2017Publication date: October 5, 2017Inventors: Hikaru OTSUKA, Yoshikazu FUJII, Akinori HIROYAMA, Hideaki ISHII
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Publication number: 20170236274Abstract: According to the embodiments, a medical image diagnosis apparatus which is accessible to an external medical scanner includes processing circuitry. The processing circuitry acquires from the medical scanner medical image data by imaging a subject based on a protocol which is a predetermined imaging procedure. The processing circuitry acquires from a sensor biometric information of at least when the subject is being photographed. The processing circuitry extracts characteristic information of the subject by processing the biometric information acquired up until a previous study. The processing circuitry assists a design of a protocol for a current study based on the characteristic information of the subject.Type: ApplicationFiled: February 7, 2017Publication date: August 17, 2017Applicant: Toshiba Medical Systems CorporationInventors: Hideaki ISHII, Manabu Hiraoka
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Publication number: 20170224300Abstract: An image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry performs a fluid analysis using image data including a blood vessel to calculate an index value relating to blood flow in the blood vessel. The processing circuitry specifies a plurality of target sites in the blood vessel in the image data. The processing circuitry changes analysis conditions for the fluid analysis corresponding to the positions of the target sites. The processing circuitry causes a display to display, in a comparative manner, the index value relating to blood flow calculated under the changed analysis conditions for the target sites.Type: ApplicationFiled: February 2, 2017Publication date: August 10, 2017Applicant: Toshiba Medical Systems CorporationInventors: Hideaki ISHII, Takuya SAKAGUCHI
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Publication number: 20170099179Abstract: The failure isolation method includes: a first step of performing a predetermined action for the monitoring target, collecting a failure event which is a result of the action, applying the failure event to a failure cause analysis rule, and narrowing down the root cause events together with certainty factors; a second step of determining whether the root cause event and the certainty factor narrowed down in the first step satisfy a predetermined requirement and whether the narrowing-down has been completed; and a third step of, when it is determined in the second step that the narrowing-down has not been completed, performing a predetermined additional action for the monitoring target, collecting an additional failure event which is a result of the additional action, applying the additional failure event to the failure cause analysis rule, and narrowing down the root cause events together with the certainty factors.Type: ApplicationFiled: March 16, 2016Publication date: April 6, 2017Inventors: Atsushi IWAMURA, Yoshiko YASUDA, Hideaki TSUSHIMA, Hideaki ISHII, Atsushi KOMATSUZAWA
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Patent number: 9568026Abstract: In an electric motor-driven booster, a sharp change of reaction force to an operation of a brake pedal is reduced to improve the brake pedal operation feeling. Operation of the brake pedal causes an input rod (34) and an input piston (32) to advance, and an electric motor (40) is driven according to the movement of the input piston to propel a primary piston (10) through a ball-screw mechanism, thereby generating a desired brake hydraulic pressure in a master cylinder. At this time, the input piston receives the hydraulic pressure in the master cylinder to feed back a part of reaction force during braking to the brake pedal. When the brake pedal is further depressed after the output of the electric motor has reached a maximum output and the primary piston 10 has stopped, a lock nut abuts against a movable spring retainer and compresses a reaction force spring.Type: GrantFiled: October 24, 2011Date of Patent: February 14, 2017Assignees: NISSAN MOTOR CO., LTD., HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Masayuki Yoshimoto, Ryozo Ikeuchi, Ryo Sekiya, Hideaki Ishii, Kazumoto Sano, Hiroshi Shigeta, Naoki Shirakawa, Ryoichi Yagi, Masami Abe
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Publication number: 20170024888Abstract: A medical image processing apparatus according to an embodiment includes processing circuitry and a display. The processing circuitry obtains first imaged data taken of a subject and second imaged data taken of the subject on a date/time different from the date/time on which the first imaged data was taken. The processing circuitry generates estimation data by performing an image processing process that changes the first imaged data on the basis of a predetermined change model. The processing circuitry generates a display image indicating the difference between the estimation data and the second imaged data. The display displays the display image.Type: ApplicationFiled: June 27, 2016Publication date: January 26, 2017Applicant: Toshiba Medical Systems CorporationInventors: Hideaki ISHII, Shigeharu OHYU, Naotaka SAKASHITA