Patents by Inventor Yoshihiro Tomoda
Yoshihiro Tomoda 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: 10613167Abstract: The present invention provides a magnetic resonance imaging method and system, the method comprising performing the following steps at least once: a composition step: performing image composition processing on raw images received by a receiving coil that is pre-determined as an artifact coil and a receiving coil that is pre-determined as a non-artifact coil to obtain a composite image; and a correction step: obtaining a product of the above composite image and space sensitivity of the above artifact coil to replace the raw image received by the above artifact coil, and performing the above composition step again.Type: GrantFiled: August 31, 2017Date of Patent: April 7, 2020Assignee: General Electric CompanyInventors: Yongchuan Lai, Weiwei Zhang, Tongzhou Wang, Hongbin Wang, Yoshihiro Tomoda, Mitsuhiro Bekku, Shaorong Chang, Graeme Colin McKinnon
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Patent number: 10564242Abstract: An MR apparatus creating a timeline suitable for data acquisition in several temporal phases. The MR apparatus including a method for creating a timeline TL2 having a scan time of TS1 based on a reference timeline TL0 having a scan time of TS. The method setting start points in time of scans SC1, SC3 and SC4 in the timeline TL2 to the same points in time as those in the reference timeline TL0, respectively. The method also setting the start point in time of the scan SC2 in the timeline TL2 to a sum of the scan time TS1 and a delay time TD1 with respect to the scan SC1 in the timeline TL2.Type: GrantFiled: April 24, 2015Date of Patent: February 18, 2020Inventors: Miho Nagasawa, Kenji Suzuki, Yoshihiro Tomoda, Masanori Ozaki
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Patent number: 10509088Abstract: An MR apparatus 100 performs a sequence for acquiring an echo train from a subject. The MR apparatus 100 comprises upper-limit-value determining unit for determining an upper limit value etl_max for the echo train length based on a value X1 and a value X2, the value X1 including echo spacing ESP and a lower limit value TEz_max for a maximum echo time. The MR apparatus 100 further comprises unit for obtaining an echo train length based on the upper limit value etl_max for the echo train length and a number of views ypoint in which data acquisition is performed.Type: GrantFiled: December 22, 2015Date of Patent: December 17, 2019Assignee: General Electric CompanyInventors: Yoshihiro Tomoda, Masanori Ozaki
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Patent number: 10295637Abstract: There is provided a scan condition determining apparatus, comprising: setting means for setting values of a plurality of parameters different from a repetition time and different from a bandwidth; and determining means for determining a specific value of the bandwidth based on the set values of the plurality of parameters such that a repetition time determined as a longer one of a first period of time and a second period of time is minimized, the first period of time being a time taken to perform a pulse sequence in one cycle, and the second period of time being a time taken from the start of a pulse sequence in one cycle until a pulse sequence in a next cycle is ready to perform determined by the thermal design restrictions of a gradient coil.Type: GrantFiled: January 29, 2016Date of Patent: May 21, 2019Assignee: General Electric CompanyInventors: Yoshihiro Tomoda, Masanori Ozaki
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Publication number: 20190113590Abstract: Methods and systems are disclosed herein for selecting a channel adapted to detection of the position of a liver. The position “m” of the border between the liver and the lung is obtained from a profile. A sum Sliver of signal intensities in a liver region R1 and a sum Slung of signal intensities in a lung region R2 are calculated. Sliver and Slung are compared. In the case where Sliver is equal to or less than Slung (Sliver?Slung), a channel is not selected as a channel used at the time of detecting the position of the edge of the liver. On the other hand, in the case where Sliver is larger than Slung (Sliver>Slung), a channel is selected as a channel used at the time of detecting the position of the edge of the liver.Type: ApplicationFiled: December 3, 2018Publication date: April 18, 2019Inventors: Yuji Iwadate, Yoshihiro Tomoda, Kunihiro Miyoshi
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Patent number: 10222440Abstract: There is provided a scan condition determining apparatus for a magnetic resonance imaging system comprising accepting means for accepting specification of a desired scan time; and searching means for searching for a second scan condition based on a first scan condition defined before the specification, by adjusting values of parameters affecting a scan time or a signal-to-noise ratio of signals obtained by a scan, said second scan condition being one with which the scan time approximates within an allowable range or matches the desired scan time, and besides, a lowest value of a relative signal-to-noise ratio of the signals approximates within an allowable range or matches a lowest value of the relative signal-to-noise ratio of the signals estimated based on the first scan condition. The parameters include, for example, any one of a number of times of addition, a y-axis direction resolution, a repetition time, and a number of data acquisition passes.Type: GrantFiled: February 17, 2016Date of Patent: March 5, 2019Assignee: GENERAL ELECTRIC COMPANYInventors: Yoshihiro Tomoda, Masanori Ozaki
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Patent number: 10209332Abstract: An magnetic resonance apparatus 100 comprises dummy-slice defining unit 93. The dummy-slice defining unit 93 defines a dummy slice a in a region lying in a z-direction with respect to a group gr1, and a dummy slice b in a region lying in a (?z)-direction with respect to the group gr1. The dummy-slice defining unit 93 also defines a dummy slice c in a region lying in the z-direction with respect to a group gr2, and a dummy slice d in a region lying in the (?z)-direction with respect to the group gr2. The dummy-slice defining unit 93 further defines the dummy slices a, b, c, d so that the slice thickness of the dummy slices a, b, c, d is greater than that of slices L1 to L12.Type: GrantFiled: February 17, 2016Date of Patent: February 19, 2019Assignee: GENERAL ELECTRIC COMPANYInventors: Yoshihiro Tomoda, Masanori Ozaki
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Patent number: 10132895Abstract: A scan condition determining apparatus determines scan conditions in a magnetic resonance imaging system. The scan condition determining apparatus includes: a setting unit for setting an imaging range, a desired spatial resolution and a desired SN ratio; and a determining unit for determining a matrix number in a frequency encode direction and a matrix number in a phase encode direction, based on the imaging range and the desired spatial resolution set by the setting unit and determining physical parameters different from the matrix number in a frequency encode direction and a matrix number in a phase encode direction, based on the determined matrix numbers, the set imaging range and the set desired SN ratio.Type: GrantFiled: April 24, 2014Date of Patent: November 20, 2018Assignee: GENERAL ELECTRIC COMPANYInventors: Yoshihiro Tomoda, Marie Uno
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Publication number: 20180059195Abstract: The present invention provides a magnetic resonance imaging method and system, the method comprising performing the following steps at least once: a composition step: performing image composition processing on raw images received by a receiving coil that is pre-determined as an artifact coil and a receiving coil that is pre-determined as a non-artifact coil to obtain a composite image; and a correction step: obtaining a product of the above composite image and space sensitivity of the above artifact coil to replace the raw image received by the above artifact coil, and performing the above composition step again.Type: ApplicationFiled: August 31, 2017Publication date: March 1, 2018Inventors: Yongchuan LAI, Weiwei ZHANG, Tongzhou WANG, Hongbin WANG, Yoshihiro TOMODA, Mitsuhiro BEKKU, Shaorong CHANG, Graeme Colin McKINNON
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Publication number: 20180017649Abstract: An MR apparatus 100 performs a sequence for acquiring an echo train from a subject. The MR apparatus 100 comprises upper-limit-value determining unit for determining an upper limit value etl_max for the echo train length based on a value X1 and a value X2, the value X1 including echo spacing ESP and a lower limit value TEz_max for a maximum echo time. The MR apparatus 100 further comprises unit for obtaining an echo train length based on the upper limit value etl_max for the echo train length and a number of views ypoint in which data acquisition is performed.Type: ApplicationFiled: December 22, 2015Publication date: January 18, 2018Inventors: Yoshihiro Tomoda, Masanori Ozaki
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Publication number: 20170052239Abstract: An MR apparatus creating a timeline suitable for data acquisition in several temporal phases. The MR apparatus including a method for creating a timeline TL2 having a scan time of TS1 based on a reference timeline TL0 having a scan time of TS. The method setting start points in time of scans SC1, SC3 and SC4 in the timeline TL2 to the same points in time as those in the reference timeline TL0, respectively. The method also setting the start point in time of the scan SC2 in the timeline TL2 to a sum of the scan time TS1 and a delay time TD1 with respect to the scan SC1 in the timeline TL2.Type: ApplicationFiled: April 24, 2015Publication date: February 23, 2017Applicant: GENERAL ELECTRIC COMPANYInventors: MIHO NAGASAWA, KENJI SUZUKI, YOSHIHIRO TOMODA, MASANORI OZAKI
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Publication number: 20170023657Abstract: There is provided a scan condition determining apparatus for a magnetic resonance imaging system comprising accepting means for accepting specification of a desired scan time; and searching means for searching for a second scan condition based on a first scan condition defined before the specification, by adjusting values of parameters affecting a scan time or a signal-to-noise ratio of signals obtained by a scan, said second scan condition being one with which the scan time approximates within an allowable range or matches the desired scan time, and besides, a lowest value of a relative signal-to-noise ratio of the signals approximates within an allowable range or matches a lowest value of the relative signal-to-noise ratio of the signals estimated based on the first scan condition. The parameters include, for example, any one of a number of times of addition, a y-axis direction resolution, a repetition time, and a number of data acquisition passes.Type: ApplicationFiled: February 17, 2016Publication date: January 26, 2017Inventors: Yoshihiro Tomoda, Masanori Ozaki
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Publication number: 20160245887Abstract: An magnetic resonance apparatus 100 comprises dummy-slice defining unit 93. The dummy-slice defining unit 93 defines a dummy slice a in a region lying in a z-direction with respect to a group gr1, and a dummy slice b in a region lying in a (?z)-direction with respect to the group gr1. The dummy-slice defining unit 93 also defines a dummy slice c in a region lying in the z-direction with respect to a group gr2, and a dummy slice d in a region lying in the (?z)-direction with respect to the group gr2. The dummy-slice defining unit 93 further defines the dummy slices a, b, c, d so that the slice thickness of the dummy slices a, b, c, d is greater than that of slices L1 to L12.Type: ApplicationFiled: February 17, 2016Publication date: August 25, 2016Inventors: Yoshihiro Tomoda, Masanori Ozaki
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Publication number: 20160209485Abstract: There is provided a scan condition determining apparatus, comprising: setting means for setting values of a plurality of parameters different from a repetition time and different from a bandwidth; and determining means for determining a specific value of the bandwidth based on the set values of the plurality of parameters such that a repetition time determined as a longer one of a first period of time and a second period of time is minimized, the first period of time being a time taken to perform a pulse sequence in one cycle, and the second period of time being a time taken from the start of a pulse sequence in one cycle until a pulse sequence in a next cycle is ready to perform determined by the thermal design restrictions of a gradient coil.Type: ApplicationFiled: January 29, 2016Publication date: July 21, 2016Inventors: YOSHIHIRO TOMODA, Masanori Ozaki
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Publication number: 20160161585Abstract: To select a channel adapted to detection of the position of a liver. The position “m” of the border between the liver and the lung is obtained from a profile. A sum Sliver of signal intensities in a liver region R1 and a sum Slung of signal intensities in a lung region R2 are calculated. After obtaining the sums Sliver and Slung of the signal intensities, Sliver and Slung are compared to determine whether Sliver is equal to or less than Slung. In the case where Sliver is equal to or less than Slung (Sliver?Slung), a channel is not selected as a channel used at the time of detecting the position of the edge of the liver. On the other hand, in the case where Sliver is larger than Slung (Sliver>Slung), a channel is selected as a channel used at the time of detecting the position of the edge of the liver.Type: ApplicationFiled: June 16, 2014Publication date: June 9, 2016Inventors: Yuji WADATE, Yoshihiro TOMODA, Kunihiro MIYOSHI
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Publication number: 20160077179Abstract: A scan condition determining apparatus determines scan conditions in a magnetic resonance imaging system. The scan condition determining apparatus includes: a setting unit for setting an imaging range, a desired spatial resolution and a desired SN ratio; and a determining unit for determining a matrix number in a frequency encode direction and a matrix number in a phase encode direction, based on the imaging range and the desired spatial resolution set by the setting unit and determining physical parameters different from the matrix number in a frequency encode direction and a matrix number in a phase encode direction, based on the determined matrix numbers, the set imaging range and the set desired SN ratio.Type: ApplicationFiled: April 24, 2014Publication date: March 17, 2016Inventors: Yoshihiro Tomoda, MARIE UNO
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Publication number: 20150157207Abstract: A scan protocol adjusting apparatus includes a setting device which sets a scan protocol of a plurality of scans included in one examination, a designating device which designates a target value of examination time, and an adjusting device which adjusts the set scan protocol so that a prediction value of the examination time of the one examination becomes close to the target value of the examination time.Type: ApplicationFiled: May 31, 2013Publication date: June 11, 2015Inventors: Hitoshi Ikeda, Yoshihiro Tomoda, Marie Uno
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Patent number: 8564290Abstract: A magnetic resonance imaging apparatus for acquiring k-space data from a deformable imaging region of a subject and generating image data of the imaging region at the time of being deformed to a predetermined state, based on the acquired k-space data, includes a gradient coil for applying a gradient magnetic field in a phase encoding direction, and an image data calculation device for calculating a numeric value for defining a relationship between the imaging region at the time of being deformed to the predetermined state and the imaging region at an nth phase encoding and calculating image data of the imaging region at the time of being deformed to the predetermined state, based on the calculated numeric value and the k-space data acquired from the imaging region.Type: GrantFiled: September 29, 2010Date of Patent: October 22, 2013Assignee: GE Medical Systems Global Technology Company, LLCInventors: Yoshihiro Tomoda, Yuji Iwadate
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Publication number: 20110074411Abstract: A magnetic resonance imaging apparatus for acquiring k-space data from a deformable imaging region of a subject and generating image data of the imaging region at the time of being deformed to a predetermined state, based on the acquired k-space data, includes a gradient coil for applying a gradient magnetic field in a phase encoding direction, and an image data calculation device for calculating a numeric value for defining a relationship between the imaging region at the time of being deformed to the predetermined state and the imaging region at an nth phase encoding and calculating image data of the imaging region at the time of being deformed to the predetermined state, based on the calculated numeric value and the k-space data acquired from the imaging region.Type: ApplicationFiled: September 29, 2010Publication date: March 31, 2011Inventors: Yoshihiro Tomoda, Yuji Iwadate