Patents by Inventor Manabu Teshigawara
Manabu Teshigawara 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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Publication number: 20150327827Abstract: According to embodiment, an X-ray computed tomography apparatus includes an X-ray tube, an X-ray detector including a scintillator generating scintillation light upon incidence of X-ray photons and a photodetection element, a peak value detector detecting peak values corresponding to X-ray photons based on an output signal from the element, processing circuitry determining an attenuation characteristic of the light by each X-ray photon and an output decreased characteristic of the element, based on the values and time when each peak value was detected, correcting the detected values according to the characteristics, a counter counting the X-ray photons corresponding to the respective corrected peak values, wherein the processing circuitry reconstructs a medical image based on an output from the counter.Type: ApplicationFiled: July 20, 2015Publication date: November 19, 2015Applicants: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventor: Manabu TESHIGAWARA
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Publication number: 20150297162Abstract: According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, collimators including through holes respectively collimating an X-ray and diffraction bodies provided in the holes respectively, diffracting the X-ray at an angle to an X-ray energy, X-ray detection elements provided at predetermined distances from the bodies, counting circuitry counting the number of photons originating from the X-ray, storage circuitry storing statistical information, corresponding to energy bins in the X-ray, concerning a count distribution of count values with positions of the elements, classification circuitry classifying the numbers of counted photons for the bins by using the information, reconstruction circuitry reconstructing a medical image to the bins based on the number of photons classified for the bins.Type: ApplicationFiled: June 29, 2015Publication date: October 22, 2015Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Medical Systems CorporationInventor: Manabu TESHIGAWARA
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Publication number: 20150173694Abstract: An X-ray computed tomography apparatus includes an X-ray generation circuit generating X-rays, X-ray detection circuit including X-ray detection modules detecting the X-rays for respective energy widths, counting circuit counting a photon originating from the X-rays for the respective energy widths based on an output from the X-ray detection circuit, and reconstruction circuit reconstructing a medical image based on an output from the counting circuit. Each of the X-ray detection modules includes a collimator collimating the X-rays, diffraction cell arranged on a rear surface side of the collimator and diffracting the X-ray at an angle corresponding to an energy of the X-ray, and X-ray detector cells arranged in a predetermined distance away from a rear surface of the collimator, and detecting the diffracted X-ray.Type: ApplicationFiled: December 9, 2014Publication date: June 25, 2015Applicants: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventor: Manabu Teshigawara
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Patent number: 9035262Abstract: According to one embodiment, a radiation therapy apparatus includes a radiation irradiation device, a detector included in a PET scanner, a control unit, and a PET image reconstruction unit. The radiation irradiation device emits a therapeutic radiation. The detector counts light derived from gamma rays, and is provided with a gap portion through which the therapeutic radiation passes on a plane of rotation about the body axis of a subject. The control unit controls the radiation irradiation device and the detector so as to rotate in synchronization with each other in a state capable of emitting the therapeutic radiation to the gap portion. The PET image reconstruction unit reconstructs a PET image based on position information at the time of counting of the detector that nearly coincidentally counts pair annihilation gamma rays in a state where the control unit performs rotation control.Type: GrantFiled: October 29, 2013Date of Patent: May 19, 2015Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSTEMS CORPORATIONInventor: Manabu Teshigawara
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Publication number: 20140364718Abstract: A medical image diagnostic apparatus bed according to an embodiment includes a top, a support mechanism, a determination unit, and a driving unit. On the top, a subject is placed. The support mechanism supports the top with adjustability of an elevation angle of the top. The determination unit determines the elevation angle based on information concerning deflection of the top. The driving unit drives the support mechanism in accordance with the determined elevation angle.Type: ApplicationFiled: August 22, 2014Publication date: December 11, 2014Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Medical Systems CorporationInventor: Manabu TESHIGAWARA
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Publication number: 20140328455Abstract: An diagnostic imaging apparatus including: a correction table; a top panel height calculation unit configured to calculate a height of the top panel corresponding to the distance between the fulcrum of the top panel and the imaging position, from an image captured by continuous imaging of the subject; an imaging position estimation unit configured to estimate an imaging position of an image captured by a different imaging method from a method for the captured image based on the height of the top panel calculated by the top panel height calculation unit, the distance between the fulcrum of the top panel corresponding to the height and the imaging position, and the correction table; and an image correction unit configured to align the imaging position of the image captured by the different imaging method with the imaging position of the image captured by the continuous imaging.Type: ApplicationFiled: July 16, 2014Publication date: November 6, 2014Applicants: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventors: Yasuhiro NOSHI, Manabu Teshigawara
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Publication number: 20140132597Abstract: In an image processing apparatus, an extracting unit extracts mutually the same region of interest from each of a plurality of pieces of three-dimensional image data corresponding to mutually-different time phases. Further, a position determining unit determines, on the basis of feature points included in the pieces of three-dimensional image data, a position used for superimposing together the regions of interest extracted by the extracting unit from the pieces of three-dimensional image data, in substantially the same position of a subject. After that, a display controlling unit changes a display format of each of the regions of interest extracted by the extracting unit from the pieces of three-dimensional image data so as to be mutually different and causes a superimposed image to be displayed by superimposing the regions of interest together in the position determined by the position determining unit.Type: ApplicationFiled: January 17, 2014Publication date: May 15, 2014Applicants: Toshiba Medical Systems Corporation, Kabushiki Kaisha ToshibaInventors: Shinsuke TSUKAGOSHI, Takashi Tsutsumi, Yasuko Fujisawa, Manabu Teshigawara, Akira Adachi
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Publication number: 20140058185Abstract: According to one embodiment, a radiation therapy apparatus includes a radiation irradiation device, a detector included in a PET scanner, a control unit, and a PET image reconstruction unit. The radiation irradiation device emits a therapeutic radiation. The detector counts light derived from gamma rays, and is provided with a gap portion through which the therapeutic radiation passes on a plane of rotation about the body axis of a subject. The control unit controls the radiation irradiation device and the detector so as to rotate in synchronization with each other in a state capable of emitting the therapeutic radiation to the gap portion. The PET image reconstruction unit reconstructs a PET image based on position information at the time of counting of the detector that nearly coincidentally counts pair annihilation gamma rays in a state where the control unit performs rotation control.Type: ApplicationFiled: October 29, 2013Publication date: February 27, 2014Applicants: TOSHIBA MEDICAL SYSTEMS CORPORATION, KABUSHIKI KAISHA TOSHIBAInventor: Manabu TESHIGAWARA
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Patent number: 8625868Abstract: According to one embodiment, a radiation diagnostic apparatus includes a photon-counting detector, a counting information storage unit, an image reconstituting unit, and a controlling unit. The detector performs counting on light derived from incident radiation. The counting information storage unit stores therein counting information based on the counting result of the detector. The image reconstituting unit reconstitutes a medical image by performing a back projection process on projection data that is generated by use of the counting information stored in the counting information storage unit. After the reconstitution of the medical image, the controlling unit performs control so that all or part of the counting information is maintained in the counting information storage unit.Type: GrantFiled: September 13, 2010Date of Patent: January 7, 2014Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventors: Takuzo Takayama, Manabu Teshigawara, Kenta Moriyasu
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Patent number: 8604439Abstract: According to one embodiment, a nuclear medicine diagnosis includes a light signal generating unit, photodetection unit, measurement unit, calculation unit, and storage unit. The light signal generating unit repeatedly generates light signals. The photodetection unit repeatedly generates first output signals corresponding to intensities of the light signals, repeatedly generates second output signals corresponding to intensities of gamma rays emitted from a subject. The measurement unit repeatedly measures light signal detection times and repeatedly measures gamma ray detection times. The calculation unit calculates a difference between a target gamma ray detection time and a target light signal detection time of the light signal detection times for each of the gamma ray detection times. The target light signal detection time is measured before the target gamma ray detection time. The storage unit stores the calculated difference in association with a target second output signal of the second output signals.Type: GrantFiled: December 22, 2010Date of Patent: December 10, 2013Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventors: Manabu Teshigawara, Takuzo Takayama, Takaya Umehara, Tomoyasu Komori
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Patent number: 8598531Abstract: According to one embodiment, a radiation therapy apparatus includes a radiation irradiation device, a detector included in a PET scanner, a control unit, and a PET image reconstruction unit. The radiation irradiation device emits a therapeutic radiation. The detector counts light derived from gamma rays, and is provided with a gap portion through which the therapeutic radiation passes on a plane of rotation about the body axis of a subject. The control unit controls the radiation irradiation device and the detector so as to rotate in synchronization with each other in a state capable of emitting the therapeutic radiation to the gap portion. The PET image reconstruction unit reconstructs a PET image based on position information at the time of counting of the detector that nearly coincidentally counts pair annihilation gamma rays in a state where the control unit performs rotation control.Type: GrantFiled: May 8, 2012Date of Patent: December 3, 2013Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventor: Manabu Teshigawara
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Patent number: 8563935Abstract: According to one embodiment, a nuclear medicine imaging apparatus includes a counting information collection unit, a determination unit, and a discarding unit. The counting information collection unit collects counting information including detection time of a gamma ray from a counting result output by a detector for counting light derived from a gamma ray, and stores the counting information in a buffer. The determination unit determines whether the volume of the counting information stored in the buffer exceeds a threshold. The discarding unit, in a case that the determination unit determines that the volume exceeds the threshold, intermittently discards, in chronological order, counting information whose detection time is within longer duration than predetermined duration used for generating two pieces of counting information obtained by counting pair annihilation gamma rays nearly coincidentally as coincidence counting information among the counting information collected from the detector.Type: GrantFiled: February 8, 2013Date of Patent: October 22, 2013Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventor: Manabu Teshigawara
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Publication number: 20130251102Abstract: According to the present embodiment, an image diagnosis apparatus includes a first image taking device that takes an image of a patient placed on a couchtop by using an X-ray emission; a second image taking device that takes images in positions by moving an image taking position of the patient by a predetermined distance at a time, along the body-axis direction; a position estimating unit; and a correction processing unit. The position estimating unit estimates a couchtop position for each of the image taking positions of the second image taking device, based on information about warping of the couchtop of the first image taking device. The correction processing unit uses information about the couchtop positions estimated by the position estimating unit, for performing a position correcting process on the images obtained by the image taking devices.Type: ApplicationFiled: May 10, 2013Publication date: September 26, 2013Applicants: Toshiba Medical Systems Corporation, Kabushiki Kaisha ToshibaInventors: Yasuhiro NOSHI, Manabu Teshigawara, Satoru Nakanishi, Takuzo Takayama
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Publication number: 20130134314Abstract: A positron emission computed tomography apparatus according to an embodiment includes a detector, a coincidence counting information generating unit, and a body movement detecting unit. The detector detects annihilation radiation released from a subject. The coincidence counting information generating unit searches for sets of counting information, which counted a pair of annihilation radiations at substantially the same time, from a counting information list that is generated from output signals of the detector; generates a set of coincidence counting information for each retrieved set of counting information; and generates a time series list of coincidence counting information. Based on the time series list of coincidence counting information, the body movement detecting unit detects temporal changes in the body movement of the subject.Type: ApplicationFiled: November 29, 2012Publication date: May 30, 2013Inventors: Manabu TESHIGAWARA, Yasuhiro NOSHI, Takuzo TAKAYAMA
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Patent number: 8373131Abstract: A PET apparatus includes an optical coupling detachment testing unit. In one example, the optical coupling detachment testing unit inputs an electric signal to a piezoelectric element or the like adhered to a detector module and generates a sound wave within the detector module. Further, the optical coupling detachment testing unit detects the sound wave propagated within the detector module and performs a frequency analysis on the detected sound wave. Subsequently, as a result of the analysis, the optical coupling detachment testing unit detects whether an optical coupling detachment has occurred by looking for a frequency distribution specific to a surface having an optical coupling detachment and/or comparing a frequency distribution with another frequency distribution from a previous test.Type: GrantFiled: August 16, 2012Date of Patent: February 12, 2013Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventors: Manabu Teshigawara, Takuzo Takayama, Yuuji Yanagida, Takaya Umehara
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Publication number: 20120312996Abstract: A PET apparatus includes an optical coupling detachment testing unit. In one example, the optical coupling detachment testing unit inputs an electric signal to a piezoelectric element or the like adhered to a detector module and generates a sound wave within the detector module. Further, the optical coupling detachment testing unit detects the sound wave propagated within the detector module and performs a frequency analysis on the detected sound wave. Subsequently, as a result of the analysis, the optical coupling detachment testing unit detects whether an optical coupling detachment has occurred by looking for a frequency distribution specific to a surface having an optical coupling detachment and/or comparing a frequency distribution with another frequency distribution from a previous test.Type: ApplicationFiled: August 16, 2012Publication date: December 13, 2012Applicants: Toshiba Medical Systems Corporation, Kabushiki Kaisha ToshibaInventors: Manabu TESHIGAWARA, Takuzo TAKAYAMA, Yuuji YANAGIDA, Takaya UMEHARA
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Publication number: 20120253096Abstract: According to one embodiment, a radiation therapy apparatus includes a radiation irradiation device, a detector included in a PET scanner, a control unit, and a PET image reconstruction unit. The radiation irradiation device emits a therapeutic radiation. The detector counts light derived from gamma rays, and is provided with a gap portion through which the therapeutic radiation passes on a plane of rotation about the body axis of a subject. The control unit controls the radiation irradiation device and the detector so as to rotate in synchronization with each other in a state capable of emitting the therapeutic radiation to the gap portion. The PET image reconstruction unit reconstructs a PET image based on position information at the time of counting of the detector that nearly coincidentally counts pair annihilation gamma rays in a state where the control unit performs rotation control.Type: ApplicationFiled: May 8, 2012Publication date: October 4, 2012Applicants: Toshiba Medical Systems Corporation, Kabushiki Kaisha ToshibaInventor: Manabu TESHIGAWARA
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Publication number: 20110163238Abstract: According to one embodiment, a nuclear medicine diagnosis includes a light signal generating unit, photodetection unit, measurement unit, calculation unit, and storage unit. The light signal generating unit repeatedly generates light signals. The photodetection unit repeatedly generates first output signals corresponding to intensities of the light signals, repeatedly generates second output signals corresponding to intensities of gamma rays emitted from a subject. The measurement unit repeatedly measures light signal detection times and repeatedly measures gamma ray detection times. The calculation unit calculates a difference between a target gamma ray detection time and a target light signal detection time of the light signal detection times for each of the gamma ray detection times. The target light signal detection time is measured before the target gamma ray detection time. The storage unit stores the calculated difference in association with a target second output signal of the second output signals.Type: ApplicationFiled: December 22, 2010Publication date: July 7, 2011Inventors: Manabu TESHIGAWARA, Takuzo Takayama, Takaya Umehara, Tomoyasu Komori
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Publication number: 20110064293Abstract: According to one embodiment, a radiation diagnostic apparatus includes a photon-counting detector, a counting information storage unit, an image reconstituting unit, and a controlling unit. The detector performs counting on light derived from incident radiation. The counting information storage unit stores therein counting information based on the counting result of the detector. The image reconstituting unit reconstitutes a medical image by performing a back projection process on projection data that is generated by use of the counting information stored in the counting information storage unit. After the reconstitution of the medical image, the controlling unit performs control so that all or part of the counting information is maintained in the counting information storage unit.Type: ApplicationFiled: September 13, 2010Publication date: March 17, 2011Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Takuzo TAKAYAMA, Manabu Teshigawara, Kenta Moriyasu
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Publication number: 20100264320Abstract: In a case that a gamma ray has entered into a plurality of scintillators adjacent to each other simultaneously, a detector detects the gamma ray having entered simultaneously. A position calculator calculates the ratio of wave heights representing the energies of the detected gamma ray. The position calculator obtains a trajectory of such a gamma ray that a ratio of distances passed by the gamma ray inside the plurality of scintillators, respectively, coincides with the ratio of the wave heights. The position calculator obtains an intersection between the boundary of the plurality of scintillators and the trajectory, as a passing position of the gamma ray. A reconstructing part executes a back projection process with the trajectory passing through the calculated passing position as a projection position.Type: ApplicationFiled: April 6, 2010Publication date: October 21, 2010Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Takuzo Takayama, Manabu Teshigawara, Takaya Umehara, Tomoyasu Komori