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公开(公告)号：US20240210501A1
公开(公告)日：2024-06-27
申请号：US18393959
申请日：2023-12-22
Applicant: CANON MEDICAL SYSTEMS CORPORATION
Inventor： Satoshi IMAI , Takaya MORI , Yuto ONO , Ryota TAKEI
CPC classification number: G01R33/34084 , G01R33/546
Abstract: In one embodiment, An MRI apparatus comprising: an RF coil that includes a plurality of coil elements and can be installed in an arbitrary orientation with either a front surface or back surface brought into contact with the object; a table on which the object is placed; and processing circuitry configured to acquire an MR “Magnetic Resonance” signal in a first scan along any one axis from each of a plurality of representative coils selected from the plurality of coil elements, detect respective positions of the plurality of representative coils along the one axis based on MR signals, and determine disposition of the RF coil relative to the table based on the respective positions of the plurality of representative coils.
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公开(公告)号：US20240045008A1
公开(公告)日：2024-02-08
申请号：US18364718
申请日：2023-08-03
Applicant: CANON MEDICAL SYSTEMS CORPORATION
Inventor： Satoshi IMAI
IPC: G01R33/36
CPC classification number: G01R33/3614 , G01R33/3664
Abstract: A magnetic resonance imaging apparatus of an embodiment includes an RF coil including a plurality of coil elements, a plurality of preamplifiers, a combiner, and a transmission line. The coil elements transmit an RF pulse to a subject placed in an imaging space, and receive a signal generated from the subject by the RF pulse. The preamplifiers are each connected to each of the coil elements via an input channel with the number of channels corresponding to the coil element, and amplify the signal received by the coil element. The combiner is connected to each pair of preamplifiers that are paired among the preamplifiers, and generates a combined signal obtained by combining the signals amplified by the preamplifiers. The transmission line transmits the combined signal combined by the combiner.
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Patent Agency Ranking
公开(公告)号：US20230131526A1
公开(公告)日：2023-04-27
申请号：US18047800
申请日：2022-10-19
Applicant: CANON MEDICAL SYSTEMS CORPORATION
Inventor： Satoshi IMAI
Abstract: In one embodiment, an MRI apparatus includes: a transmission circuit configured to apply a transmission pulse to an object; at least one radio frequency (RF) coil configured to include an active trap circuit provided with a PIN diode, and to receive a magnetic resonance signal from the object; a power supply circuit configured to apply a reverse bias voltage and a forward bias voltage to the PIN diode, and to apply multiple values of a forward current when the forward bias voltage is applied to the PIN diode; and a control circuit configured to control the power supply circuit in such a manner that the power supply circuit sets the forward current to the multiple values, depending on imaging conditions.
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公开(公告)号：US20210302515A1
公开(公告)日：2021-09-30
申请号：US17210625
申请日：2021-03-24
Applicant: CANON MEDICAL SYSTEMS CORPORATION
Inventor： Satoshi IMAI , Sadanori TOMIHA , Masahiro FUKUSHIMA , Misaki KOBAYASHI
IPC: G01R33/34
Abstract: A radio frequency coil according to an embodiment is configured to receive a magnetic resonance signal from an examined subject. The radio frequency coil includes an expandable and contractible first element and an expandable and contractible second element. The radio frequency coil has an overlap region where a first loop formed by the first element overlaps with a second loop formed by the second element. The ratio of the area of the overlap region to the area of the region enclosed by the first loop changes in accordance with expansion/contraction of the first element forming the first loop. The first element and the second element include liquid metal in at least a part thereof.
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公开(公告)号：US20180314891A1
公开(公告)日：2018-11-01
申请号：US15960704
申请日：2018-04-24
Applicant: Canon Medical Systems Corporation
Inventor： Miyuki OTA , Mitsuo TAKAGI , Sadanori TOMIHA , Satoshi IMAI , Masahiro FUKUSHIMA , Manabu ISHII , Shinji MITSUI
Abstract: 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.
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公开(公告)号：US20210132165A1
公开(公告)日：2021-05-06
申请号：US17070078
申请日：2020-10-14
Applicant: Canon Medical Systems Corporation
Inventor： Sadanori TOMIHA , Takafumi OHISHI , Sho KAWAJIRI , Satoshi IMAI
IPC: G01R33/34
Abstract: According to one embodiment, a coil element includes an extendable and contractible coil and a capacitor. The capacitor is connected to the coil and has an electrostatic capacity which changes due to a physical change in response to extension or contraction of the coil.
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公开(公告)号：US20180329004A1
公开(公告)日：2018-11-15
申请号：US15967793
申请日：2018-05-01
Applicant: CANON MEDICAL SYSTEMS CORPORATION
Inventor： Satoshi IMAI , Sadanori TOMIHA , Keiichiro ISHI , Takaya MORI
IPC: G01R33/36 , G01R33/483 , G01R33/54
CPC classification number: G01R33/3607 , G01R33/4833 , G01R33/543
Abstract: 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.
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