-
公开(公告)号：US11333731B2
公开(公告)日：2022-05-17
申请号：US16381451
申请日：2019-04-11
发明人： Satoshi Imai , Sadanori Tomiha
摘要： An MRI apparatus according to an embodiment includes a whole body RF coil accommodated in a gantry. The whole body RF coil includes a first element unit used for transmission of a radio frequency magnetic field; and a second element unit used for reception of a magnetic resonance signal produced from a subject having been applied with the radio frequency magnetic field. The first element unit is a birdcage-type RF coil having two end rings and a plurality of rungs spaced apart from each other along the circumferential direction of the end rings. The second element unit is a microstrip antenna.
-
公开(公告)号：US11467236B2
公开(公告)日：2022-10-11
申请号：US16813865
申请日：2020-03-10
发明人： Takafumi Ohishi , Sadanori Tomiha
IPC分类号： G01R33/34 , A61B5/055 , G01R33/561 , G16H30/20 , G16H40/63
摘要： In one embodiment, a biological information monitoring apparatus includes: an antenna assembly including at least one antenna, the antenna assembly being configured to be disposed close to an abject; a signal generator configured to generate a high-frequency signal; a coupling-amount detection circuit configured to detect coupling amount of near-field coupling due to an electric field between the object and the at least one antenna by using the high-frequency signal; and a displacement detection circuit configured to detect a physical displacement of the object based on change in the coupling amount of near-field coupling.
-
公开(公告)号：US10928469B2
公开(公告)日：2021-02-23
申请号：US15967793
申请日：2018-05-01
发明人： Satoshi Imai , Sadanori Tomiha , Keiichiro Ishi , Takaya Mori
IPC分类号： G01R33/36 , G01R33/54 , G01R33/483 , G01R33/58
摘要： A magnetic resonance imaging apparatus according to an embodiment includes a transmission coil and processing circuitry. The transmission coil is configured to apply a high frequency magnetic field to an object. The processing circuitry is configured to: derive, based on at least one of an imaging region and the body shape data of the object, a specific area in a field of view (FOV); and determine, based on a signal within the specific area, an output power level of a high frequency pulse signal supplied to the transmission coil.
-
公开(公告)号：US20190317166A1
公开(公告)日：2019-10-17
申请号：US16381451
申请日：2019-04-11
发明人： Satoshi Imai , Sadanori Tomiha
摘要： An MRI apparatus according to an embodiment includes a whole body RF coil accommodated in a gantry. The whole body RF coil includes a first element unit used for transmission of a radio frequency magnetic field; and a second element unit used for reception of a magnetic resonance signal produced from a subject having been applied with the radio frequency magnetic field. The first element unit is a birdcage-type RF coil having two end rings and a plurality of rungs spaced apart from each other along the circumferential direction of the end rings. The second element unit is a microstrip antenna.
-
公开(公告)号：US20190302201A1
公开(公告)日：2019-10-03
申请号：US16360591
申请日：2019-03-21
发明人： Shinji Mitsui , Masahiro Fukushima , Satoshi Imai , Miyuki Ota , Sadanori Tomiha
IPC分类号： G01R33/36 , G01R33/34 , G01R33/58 , G01R33/54 , G01R33/385
摘要： According to one embodiment, a magnetic resonance imaging apparatus includes processing circuitry. The processing circuitry generates positional information related to a positional relationship between a transmitter coil and a receiver coil based on a magnetic resonance signal received from a subject. The processing circuitry adjusts an irradiation intensity of an RF pulse to be irradiated on the subject in accordance with the positional information.
-
公开(公告)号：US10984241B2
公开(公告)日：2021-04-20
申请号：US15960704
申请日：2018-04-24
发明人： Miyuki Ota , Mitsuo Takagi , Sadanori Tomiha , Satoshi Imai , Masahiro Fukushima , Manabu Ishii , Shinji Mitsui
IPC分类号： G06K9/00 , G06T7/70 , H04N9/31 , G01R33/56 , G01R33/54 , G16H30/20 , G16H50/20 , G16H30/40 , G16H40/63 , G01R33/28 , G06F3/147
摘要： A medical image diagnosis apparatus according to an embodiment includes a storage circuitry and processing circuitry. The storage circuitry is configured to store therein workflow information indicating a plurality of procedures related to a preparation for an imaging process. The processing circuitry is configured to analyze an image obtained by a camera. The processing circuitry is configured to identify which of the plurality of procedures has been performed on the basis of the workflow information and a result of the analysis performed on the image and to cause an informing device to provide information about one or more of the procedures corresponding to a result of the identifying.
-
公开(公告)号：US20200341083A1
公开(公告)日：2020-10-29
申请号：US16854060
申请日：2020-04-21
发明人： Takafumi Ohishi , Sadanori Tomiha
IPC分类号： G01R33/341 , G01R33/36 , A61B5/055
摘要： In one embodiment, an MRI apparatus includes: an RF coil configured to receive a magnetic resonance signal from an object and include a first wireless antenna with horizontal polarization; a main body provided with a bore and configured to apply an RF pulse to an object, the bore being a space in which the object is placed during imaging; and at least one second wireless antenna configured to perform wireless communication between the RF coil and the main body via the first wireless antenna, one of the at least one second wireless antenna being disposed at an uppermost portion in an outer periphery of an opening edge of the bore.
-
公开(公告)号：US20200294658A1
公开(公告)日：2020-09-17
申请号：US16813865
申请日：2020-03-10
发明人： Takafumi OHISHI , Sadanori Tomiha
摘要： In one embodiment, a biological information monitoring apparatus includes: an antenna assembly including at least one antenna, the antenna assembly being configured to be disposed close to an abject; a signal generator configured to generate a high-frequency signal; a coupling-amount detection circuit configured to detect coupling amount of near-field coupling due to an electric field between the object and the at least one antenna by using the high-frequency signal; and a displacement detection circuit configured to detect a physical displacement of the object based on change in the coupling amount of near-field coupling.
-
公开(公告)号：US11519985B2
公开(公告)日：2022-12-06
申请号：US16813850
申请日：2020-03-10
发明人： Takafumi Ohishi , Sadanori Tomiha
IPC分类号： G01R33/36 , G01R33/565 , A61B5/00 , A61B5/055
摘要： In one embodiment, a Magnetic Resonance Imaging (MRI) apparatus includes: an RF coil configured to perform A/D conversion on a magnetic resonance (MR) signal received from an object and wirelessly transmit the MR signal; a main body configured to wirelessly receive the MR signal and generate a system clock; first communication circuitry configured to transmit the system clock by surface electric field communication using electric field propagation along a body surface of the object; and second communication circuitry provided in the RF coil and configured to receive the system clock transmitted by the surface electric field communication, wherein the RF coil is configured to operate based on the received system clock.
-
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.
-
-
-
-
-
-
-
-
-
搜索结果
17 条记录 (耗时 0.016 秒)