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公开(公告)号：US11073586B2
公开(公告)日：2021-07-27
申请号：US16699345
申请日：2019-11-29
发明人： Koichi Oshio , Shinya Yamada , Masao Yui , Seiko Sakuraba
IPC分类号： G01R33/561 , G01R33/54
摘要： A magnetic resonance imaging method according to an embodiment includes performing a balanced SSFP sequence, repeatedly applies an excitation RF pulse to a subject at intervals of a repetition time and applies gradient magnetic field pulses balanced such that a time integral becomes zero within each interval of the repetition time, while further applying a spin labeling gradient magnetic field for generating one or more continuous spin labels within each interval of the repetition time.
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公开(公告)号：US11372070B2
公开(公告)日：2022-06-28
申请号：US16798574
申请日：2020-02-24
发明人： Hidenori Takeshima , Masao Yui , Yuichi Yamashita
IPC分类号： G01R33/561 , G01R33/48 , G06N20/00 , G06N5/04 , G06N3/08
摘要： According to one embodiment, a data processing apparatus includes processing circuitry. The processing circuitry acquires input data relating to a processing target including a plurality of data segments corresponding respectively to a plurality of imaging contrasts determined by a first pulse sequence. The processing circuitry generates output data relating to the processing target by applying a trained model to input data relating to the processing target. The processing circuitry outputs output data relating to the processing target.
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公开(公告)号：US11416984B2
公开(公告)日：2022-08-16
申请号：US16543669
申请日：2019-08-19
发明人： Hidenori Takeshima , Masao Yui
摘要： According to one embodiment, a medical image processing apparatus includes an acquirer, a first processor and a second processor. The acquirer is configured to acquire nonequispaced sampled data from a test object. The first processor is configured to derive product-sums of the nonequispaced sampled data acquired by the acquirer and a plurality of coefficient sets and generate equispaced sampled data including a plurality of elements with which the product-sums derived for the coefficient sets are associated as element values. The second processor is configured to generate a medical image in which at least part of the test object has been imaged through reconstruction basis on the equispaced sampled data generated by the first processor.
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公开(公告)号：US20190004134A1
公开(公告)日：2019-01-03
申请号：US16022089
申请日：2018-06-28
发明人： Yuko HARA , Kanako Saito , Taichiro Shiodera , Tomoyuki Takeguchi , Takashi Shigeta , Masao Yui , Hiroshi Kusahara , Yuki Takai , Yoshimori Kasai
摘要： A magnetic resonance imaging apparatus according to an embodiment includes sequence controlling circuitry and processing circuitry. The sequence controlling circuitry acquires first k-space data in units of a plurality of segments while arranging the plurality of segments to overlap one another in a read-out direction, the first k-space being divided into the plurality of segments in the read-out direction. The processing circuitry calculates a weighting coefficient on a basis of information about a gradient magnetic field related to the acquisition and generates second k-space data on a basis of the plurality of segments in the first k-space data and the weighting coefficient.
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公开(公告)号：US20200271743A1
公开(公告)日：2020-08-27
申请号：US16798574
申请日：2020-02-24
发明人： Hidenori Takeshima , Masao Yui , Yuichi Yamashita
IPC分类号： G01R33/561 , G01R33/48 , G06N3/08 , G06N5/04 , G06N20/00
摘要： According to one embodiment, a data processing apparatus includes processing circuitry. The processing circuitry acquires input data relating to a processing target including a plurality of data segments corresponding respectively to a plurality of imaging contrasts determined by a first pulse sequence. The processing circuitry generates output data relating to the processing target by applying a trained model to input data relating to the processing target. The processing circuitry outputs output data relating to the processing target.
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公开(公告)号：US11619693B2
公开(公告)日：2023-04-04
申请号：US17643536
申请日：2021-12-09
发明人： Yoshimori Kassai , Masao Yui
摘要： A magnetic resonance imaging apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires an echo signal generated for each of intervals of repetition time by applying an excitation pulse to a subject at the intervals of repetition time, and acquires data of a plurality of trajectories set for a k-space using the echo signals. The processing circuitry acquires a plurality of echo signals by setting echo time to lengths different between a plurality of periods of repetition time and acquires data of the same trajectory using the echo signals, and the echo time serves as time from application of the excitation pulse to generation of the echo signal.
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公开(公告)号：US11360170B2
公开(公告)日：2022-06-14
申请号：US17089081
申请日：2020-11-04
发明人： Sadanori Tomiha , Masao Yui
摘要： A magnetic resonance imaging apparatus according to an embodiment includes a static magnetic field generator, a transmit/receive system, and an acquiring means. The static magnetic field generator is configured to apply a second static magnetic field in addition to a first static magnetic field serving as a reference. The transmit/receive system is configured to perform transmitting and receiving at a single frequency. The processing circuitry is configured to acquire a magnetic resonance signal by employing the transmit/receive system. The transmit/receive system is configured to perform transmitting and receiving at a resonance frequency of a hydrogen nucleus in a state in which the first static magnetic field is applied and is configured to perform transmitting and receiving at a resonance frequency of a nuclide different from the hydrogen nucleus in a state in which the second static magnetic field is applied in addition to the first static magnetic field.
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公开(公告)号：US10888226B2
公开(公告)日：2021-01-12
申请号：US16676818
申请日：2019-11-07
发明人： Hitoshi Yamagata , Masao Yui
摘要： A magnetic resonance imaging apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to specify a search start position of a matrix representing inter-regional connectivity between a plurality of regions in a brain based on a result of an analysis on an image of a subject and an attention degree set to each of the regions. The processing circuitry is configured to search the matrix using the search start position.
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