Patents by Inventor Hitoshi Kanazawa
Hitoshi Kanazawa 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: 20180279878Abstract: In one embodiment, an MRI apparatus is configured to be connected with a pressure device that externally pressures a blood vessel of an object, and includes a scanner configured to perform imaging on the object and processing circuitry. The processing circuitry controls the pressure device in such a manner that ischemia and reperfusion are caused with respect to the object, determines a start timing of the imaging on the basis of a state of pressurization caused by the pressure device, causes the scanner to perform the imaging on the object in accordance with the start timing, and generates an image by using data acquired in the imaging.Type: ApplicationFiled: April 3, 2018Publication date: October 4, 2018Applicant: CANON MEDICAL SYSTEMS CORPORATIONInventors: Ei NOMURA, Hitoshi KANAZAWA
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Patent number: 9910119Abstract: A magnetic resonance imaging (MR) apparatus includes a mode switching part and an imaging system. The mode switching part is configured to put a circuit system consuming power into a shutdown state when a first trigger has been detected and to put the circuit system back into a startup state when a second trigger has been detected. The first trigger shows that MR imaging does not start for a certain period. The second trigger shows that MR imaging starts. The imaging system is configured to perform MR imaging by using the circuit system after being set to the startup state.Type: GrantFiled: May 25, 2016Date of Patent: March 6, 2018Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Motohisa Yokoi, Kanta Kobuchi, Sho Kawajiri, Masaaki Yamanaka, Naoki Imamura, Hitoshi Kanazawa
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Patent number: 9700220Abstract: A magnetic resonance imaging apparatus includes an imaging condition setting unit, a scan performing unit and a blood flow image generating unit. The imaging condition setting unit sets a sequence accompanying application of a motion probing gradient pulse as an imaging condition. The scan performing unit performs an imaging scan according to the sequence. The blood flow image generating unit generates a blood flow image based on data acquired by the imaging scan.Type: GrantFiled: April 25, 2007Date of Patent: July 11, 2017Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Mitsue Miyazaki, Hitoshi Kanazawa
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Publication number: 20160274206Abstract: According to one embodiment, a magnetic resonance imaging apparatus includes a mode switching part and an imaging system. The mode switching part is configured to put a circuit system consuming a power into a shutdown state when a first trigger has been detected and put the circuit system being the shutdown state into a startup state when a second trigger has been detected. The first trigger shows that an imaging does not start for a certain period. The second trigger shows that the imaging starts. The imaging system is configured to perform the imaging by using the circuit system being the startup state.Type: ApplicationFiled: May 25, 2016Publication date: September 22, 2016Inventors: Motohisa YOKOI, Kanta KOBUCHI, Sho KAWAJIRI, Masaaki YAMANAKA, Naoki IMAMURA, Hitoshi KANAZAWA
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Patent number: 9383422Abstract: According to one embodiment, a magnetic resonance imaging apparatus includes a mode switching part and an imaging system. The mode switching part is configured to put a circuit system consuming a power into a shutdown state when a first trigger has been detected and put the circuit system being the shutdown state into a startup state when a second trigger has been detected. The first trigger shows that an imaging does not start for a certain period. The second trigger shows that the imaging starts. The imaging system is configured to perform the imaging by using the circuit system being the startup state.Type: GrantFiled: November 21, 2012Date of Patent: July 5, 2016Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Motohisa Yokoi, Kanta Kobuchi, Sho Kawajiri, Masaaki Yamanaka, Naoki Imamura, Hitoshi Kanazawa
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Patent number: 8903469Abstract: A velocity-image creating unit creates a velocity image that indicates a distribution of velocity components with respect to each of a plurality of images obtained by repeating a plurality of number of times Echo Planar Imaging (EPI) that is capable of obtaining velocity components of a Cerebrospinal Fluid (CSF) flowing inside a subject. A velocity-variance image creating unit calculates variance of velocity components along the time sequence by same position on velocity images by using a plurality of created velocity images. A superimposed-image processing unit then superimposes the distribution of the variance of the velocity components according to the velocity-variance image on an average absolute-value image, and an image display unit displays a superimposed image.Type: GrantFiled: October 2, 2009Date of Patent: December 2, 2014Assignees: Tokai University Educational Systems, Toshiba Medical Systems CorporationInventors: Shinya Yamada, Hitoshi Kanazawa
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Patent number: 8903470Abstract: A velocity-image creating unit creates a velocity image that indicates a distribution of velocity components with respect to each of a plurality of images obtained by repeating a plurality of number of times Echo Planar Imaging (EPI) that is capable of obtaining velocity components of a Cerebrospinal Fluid (CSF) flowing inside a subject. A velocity-variance image creating unit calculates variance of velocity components along the time sequence by same position on velocity images by using a plurality of created velocity images. A superimposed-image processing unit then superimposes the distribution of the variance of the velocity components according to the velocity-variance image on an average absolute-value image, and an image display unit displays a superimposed image.Type: GrantFiled: August 9, 2012Date of Patent: December 2, 2014Assignees: Tokai University Educational Systems, Toshiba Medical Systems CorporationInventors: Shinya Yamada, Hitoshi Kanazawa
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Patent number: 8836330Abstract: According to one embodiment, an MRI apparatus includes a calculation unit and an imaging unit. The calculation unit calculates “a value of a parameter having an upper limit” for “a plurality of patterns of scan orders for a plurality of scan operations for an object” respectively. The imaging unit generates image data for each of the scan operations by performing the plurality of scan operations based on a result of the calculation.Type: GrantFiled: December 13, 2010Date of Patent: September 16, 2014Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventor: Hitoshi Kanazawa
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Publication number: 20130127467Abstract: According to one embodiment, a magnetic resonance imaging apparatus includes a mode switching part and an imaging system. The mode switching part is configured to put a circuit system consuming a power into a shutdown state when a first trigger has been detected and put the circuit system being the shutdown state into a startup state when a second trigger has been detected. The first trigger shows that an imaging does not start for a certain period. The second trigger shows that the imaging starts. The imaging system is configured to perform the imaging by using the circuit system being the startup state.Type: ApplicationFiled: November 21, 2012Publication date: May 23, 2013Applicants: TOSHIBA MEDICAL SYSTEMS CORPORATION, KABUSHIKI KAISHA TOSHIBAInventors: Motohisa YOKOI, Kanta KOBUCHI, Sho KAWAJIRI, Masaaki YAMANAKA, Naoki IMAMURA, Hitoshi KANAZAWA
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Patent number: 8386273Abstract: A shared object is newly created in a unified format with respect to past medical information that is effective in a photographing step or a report creating step. Since the shared object can include a position determination image, unique object information, body coordinates information, a photographing condition, a image creating condition, and key image information, it is possible to automatically set the same photographing condition, photographing range, a tomographic position to be photographed, and image creating condition as those in a past test by using the information described above.Type: GrantFiled: April 9, 2007Date of Patent: February 26, 2013Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventors: Shigeo Kaminaga, Masahiro Ozaki, Takashi Masuzawa, Akira Iwasa, Hitoshi Kanazawa
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Publication number: 20120302871Abstract: A velocity-image creating unit creates a velocity image that indicates a distribution of velocity components with respect to each of a plurality of images obtained by repeating a plurality of number of times Echo Planar Imaging (EPI) that is capable of obtaining velocity components of a Cerebrospinal Fluid (CSF) flowing inside a subject. A velocity-variance image creating unit calculates variance of velocity components along the time sequence by same position on velocity images by using a plurality of created velocity images. A superimposed-image processing unit then superimposes the distribution of the variance of the velocity components according to the velocity-variance image on an average absolute-value image, and an image display unit displays a superimposed image.Type: ApplicationFiled: August 9, 2012Publication date: November 29, 2012Applicants: TOSHIBA MEDICAL SYSTEMS CORPORATION, TOKAI UNIVERSITY EDUCATIONAL SYSTEMInventors: Shinya YAMADA, Hitoshi KANAZAWA
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Publication number: 20120302872Abstract: A magnetic resonance imaging apparatus includes an imaging condition setting unit, a scan performing unit and a blood flow image generating unit. The imaging condition setting unit sets a sequence accompanying application of a motion probing gradient pulse as an imaging condition. The scan performing unit performs an imaging scan according to the sequence. The blood flow image generating unit generates a blood flow image based on data acquired by the imaging scan.Type: ApplicationFiled: August 8, 2012Publication date: November 29, 2012Applicants: TOSHIBA MEDICAL SYSTEMS CORPORATION, KABUSHIKI KAISHA TOSHIBAInventors: Mitsue MIYAZAKI, Hitoshi KANAZAWA
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Patent number: 8085040Abstract: A magnetic resonance imaging apparatus includes an imaging unit which applies a labeling pulse to invert a spin included in a labeling region within part of a imaging region and then collects a echo signal from a time point when an inversion time has passed from the application of the labeling pulse, and a control unit, the control unit controlling the imaging unit so that the echo signal in the imaging region is collected a plurality of times with variations in the inversion time, the control unit also controlling the imaging unit so that a time ranging from a reference time point within a biological signal obtained from a subject to the application of the labeling pulse is a time determined in accordance with the inversion time.Type: GrantFiled: October 21, 2010Date of Patent: December 27, 2011Assignees: Tokai University Educational System, Toshiba Medical Systems CorporationInventors: Shinya Yamada, Hitoshi Kanazawa, Tokunori Kimura, Masaaki Umeda
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Publication number: 20110148412Abstract: According to one embodiment, an MRI apparatus includes a calculation unit and an imaging unit. The calculation unit calculates “a value of a parameter having an upper limit” for “a plurality of patterns of scan orders for a plurality of scan operations for an object” respectively. The imaging unit generates image data for each of the scan operations by performing the plurality of scan operations based on a result of the calculation.Type: ApplicationFiled: December 13, 2010Publication date: June 23, 2011Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSYEMS CORPORATIONInventor: Hitoshi KANAZAWA
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Publication number: 20110037466Abstract: A magnetic resonance imaging apparatus includes an imaging unit which applies a labeling pulse to invert a spin included in a labeling region within part of a imaging region and then collects a echo signal from a time point when an inversion time has passed from the application of the labeling pulse, and a control unit, the control unit controlling the imaging unit so that the echo signal in the imaging region is collected a plurality of times with variations in the inversion time, the control unit also controlling the imaging unit so that a time ranging from a reference time point within a biological signal obtained from a subject to the application of the labeling pulse is a time determined in accordance with the inversion time.Type: ApplicationFiled: October 21, 2010Publication date: February 17, 2011Applicants: TOKAI UNIVERSITY EDUCATIONAL SYSTEM, TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Shinya Yamada, Hitoshi Kanazawa, Tokunori Kimura, Masaaki Umeda
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Patent number: 7880464Abstract: A magnetic resonance imaging apparatus includes an imaging unit which applies a labeling pulse to invert a spin included in a labeling region within part of a imaging region and then collects a echo signal from a time point when an inversion time has passed from the application of the labeling pulse, and a control unit, the control unit controlling the imaging unit so that the echo signal in the imaging region is collected a plurality of times with variations in the inversion time, the control unit also controlling the imaging unit so that a time ranging from a reference time point within a biological signal obtained from a subject to the application of the labeling pulse is a time determined in accordance with the inversion time.Type: GrantFiled: September 10, 2007Date of Patent: February 1, 2011Assignees: Tokai University Educational System, Toshiba Medical Systems CorporationInventors: Shinya Yamada, Hitoshi Kanazawa, Tokunori Kimura, Masaaki Umeda
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Publication number: 20100087730Abstract: A velocity-image creating unit creates a velocity image that indicates a distribution of velocity components with respect to each of a plurality of images obtained by repeating a plurality of number of times Echo Planar Imaging (EPI) that is capable of obtaining velocity components of a Cerebrospinal Fluid (CSF) flowing inside a subject. A velocity-variance image creating unit calculates variance of velocity components along the time sequence by same position on velocity images by using a plurality of created velocity images. A superimposed-image processing unit then superimposes the distribution of the variance of the velocity components according to the velocity-variance image on an average absolute-value image, and an image display unit displays a superimposed image.Type: ApplicationFiled: October 2, 2009Publication date: April 8, 2010Applicants: TOSHIBA MEDICAL SYSTEMS CORPORATION, TOKAI UNIVERSITY EDUCATIONAL SYSTEMSInventors: Shinya Yamada, Hitoshi Kanazawa
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Patent number: 7663365Abstract: A magnetic resonance imaging apparatus includes an imaging unit which performs imaging more than once with respect to an imaging target while changing a central frequency of a fat suppression pulse, a generation unit which generates a plurality of images based on magnetic resonance signals obtained by imaging performed more than once, and a calculation unit which calculates factor information of spatial inhomogeneity of a fat suppression effect based on the plurality of images.Type: GrantFiled: September 24, 2008Date of Patent: February 16, 2010Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventor: Hitoshi Kanazawa
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Patent number: 7623901Abstract: In the black blood method using a double inversion pulse, images in the systole of the cardiac cycle can be captured in a reliable manner even in the presence of a cycle-to-cycle variance in the heart beat cycle. A pulse sequence of the black blood method composed of a double inversion pulse DIV and an imaging pulse train SEQima is used. This sequence is applied in sync with an ECG signal of a subject to be imaged, and magnetic resonance imaging is thereby performed. The double inversion DIV is applied in sync with an R-wave:R1 appearing on the ECG signal at a given timing, with a first delay time td1 (fixed value), and the imaging pulse train SEQima is applied in sync with the following R-wave:R2 with a second delay time td2 (fixed value: set in accordance with the systole). A variance of the cardiac cycle is absorbed in an inversion time BBTI.Type: GrantFiled: November 15, 2001Date of Patent: November 24, 2009Assignee: Kabushiki Kaisha ToshibaInventor: Hitoshi Kanazawa
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Patent number: 7613496Abstract: A magnetic resonance imaging apparatus includes a blood flow velocity acquiring unit that acquires a flow velocity of the blood flow of an object, a capturing condition setting unit that, on the basis of the flow velocity of the blood flow acquired by the blood flow velocity acquiring unit, sets at least one of a transmitting phase of a transmitted exciting pulse, a transmitting phase of a refocusing pulse, a shift amount of the relative phase difference between the transmitted exciting phase and the refocusing pulse, and an intensity of a gradient pulse in a readout direction as a capturing condition, and a blood flow image capturing unit that creates a blood flow image of the object by performing an imaging scan on the basis of the capturing condition set by the capturing condition setting unit.Type: GrantFiled: September 21, 2006Date of Patent: November 3, 2009Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventors: Mitsue Miyazaki, Hitoshi Kanazawa