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11.发明申请公开(公告)号：US20210022705A1
公开(公告)日：2021-01-28
申请号：US16816722
申请日：2020-03-12
Applicant: Hitachi, Ltd.
Inventor： Atsuro SUZUKI , Yushi TSUBOTA , Takahide TERADA , Kenichi KAWABATA , Kazuhiro YAMANAKA , Wenjing WU
Abstract: To provide an ultrasonic CT apparatus that can change an inclination of a side surface of a breast such that an ultrasonic wave is incident on a surface of an entire circumference of the breast at an angle close to perpendicular, and that has less psychological burden on a subject. A container provided with an opening to which the breast is inserted is disposed below a bed provided with a through hole to which the breast of the subject is inserted. In the container, a member that propagates or transmits the ultrasonic wave is disposed, and the member is relatively pressed against a side surface or a nipple portion of the breast such that an inclination of the side surface of the breast is close to perpendicular. A transducer array emits the ultrasonic wave around the breast with the inclination of the side surface being close to perpendicular.
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公开(公告)号：US20190290223A1
公开(公告)日：2019-09-26
申请号：US16272583
申请日：2019-02-11
Applicant: Hitachi, Ltd.
Inventor： Yushi TSUBOTA , Masakazu SUGAYA , Hideo KASHIMA , Takahide TERADA , Kenichi KAWABATA , Wenjing WU , Kazuhiro YAMANAKA , Ai MASUDA
Abstract: The ultrasonic CT device includes: a first water tank configured such that an object is inserted therein, the first water tank being filled with a medium through which an ultrasonic wave passes; a ring array that irradiates an ultrasonic wave to the object and detects an ultrasonic wave reflected by the object while moving on an outer surface of the first water tank; and a signal processing unit that generates a tomographic image of the object based on a signal obtained by the ring array. The ultrasonic CT device further includes: a second water tank that houses the first water tank and the ring array; and a lid having a hole or a notch which is provided on a side of the object in the second water tank and which drains the medium.
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公开(公告)号：US20180310923A1
公开(公告)日：2018-11-01
申请号：US15894115
申请日：2018-02-12
Applicant: HITACHI, LTD.
Inventor： Atsuro SUZUKI , Kenichi KAWABATA , Takahide TERADA , Yushi TSUBOTA , Wenjing WU , Kazuhiro YAMANAKA
Abstract: Provided herein is a phantom capable of mimicking both a dense breast and a fatty breast. A phantom for ultrasound measurement includes: a first member that mimics an object of interest for measurement; and a second member having provided therein the first member. The second member has the property to decrease its sound speed with a temperature increase brought by external temperature control. The sound speed of the second member at a predetermined temperature is equal to the sound speed of a third member surrounding the second member. The first member and the second member are immiscible with each other.
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Patent Agency Ranking
公开(公告)号：US20180310919A1
公开(公告)日：2018-11-01
申请号：US15916788
申请日：2018-03-09
Applicant: HITACHI, LTD.
Inventor： Yushi TSUBOTA , Kenichi KAWABATA , Atsurou SUZUKI , Takahide TERADA , Wenjing WU , Kazuhiro YAMANAKA
CPC classification number: A61B8/5207 , A61B8/0825 , A61B8/15 , A61B8/4494 , A61B8/5269
Abstract: A sinogram is corrected in a form that can use a straight-ray type reconstruction method while considering trajectory of refracted waves. Specifically, based on the sequentially estimated path information of the virtual waves, an arrival time difference sinogram is corrected by a difference or a ratio between “shortest arrival time of wave” and “arrival time of the wave through the shortest path” to each detection element.
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公开(公告)号：US20180271480A1
公开(公告)日：2018-09-27
申请号：US15762628
申请日：2016-04-28
Applicant: Hitachi, Ltd.
Inventor： Kenichi KAWABATA , Hideki YOSHIKAWA , Rei ASAMI , Takahide TERADA , Kazuhiro YAMANAKA , Yushi TSUBOTA , Wenjing WU
CPC classification number: A61B8/406 , A61B8/0825 , A61B8/14 , A61B8/15 , A61B8/4209 , A61B8/4281 , A61B8/4494 , A61B8/5207 , A61B8/5246 , A61B8/54 , A61B8/543
Abstract: An ultrasonic imaging device according to the present invention includes: a container provided with an opening for inserting a target region of a subject; and a transmission/reception unit that transmits ultrasound to the target region inserted into the container filled with a liquid and receives the ultrasound that penetrates the target region or is reflected from the target region. The container has a pressure reducing unit that holds the target region in the container by reducing a pressure in the container of which the opening is covered with the target region. According to the present invention, since it is possible to maintain a shape close to a predetermined shape when the target region of a breast or the like is inserted into a container filled with the liquid, it is possible to measure the target region with high accuracy by transmitting and receiving ultrasound.
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公开(公告)号：US20210378632A1
公开(公告)日：2021-12-09
申请号：US17416707
申请日：2020-01-07
Applicant: Hitachi, Ltd.
Inventor： Tomohiko TANAKA , Ryo IMAI , Misaki HIROSHIMA , Kenichi KAWABATA , Hiroshi KURIBARA
Abstract: In a transcatheter treatment support technique using a combination of a guide wire equipped with a photoacoustic technique and an ultrasonic imaging device, the ultrasonic imaging device estimates a front edge position of the guide wire using a difference between arrival times of photoacoustic waves arriving at an array of elements configuring an ultrasonic probe or a change of an image of the photoacoustic generation source, which depends on a distance of the photoacoustic generation source from an imaging region, and grasps a relationship between an imaging position and the front edge position of the guide wire using the estimation result. This enables visually grasping a relationship between a region (imaging region) from which an image is able to be obtained with reflective waves from a biological body with use of the ultrasonic probe and an insertion object present outside the region, particularly, the front edge of the guide wire.
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公开(公告)号：US20210000985A1
公开(公告)日：2021-01-07
申请号：US16898047
申请日：2020-06-10
Applicant: Hitachi, Ltd.
Inventor： Kenichi KAWABATA , Hideki YOSHIKAWA
IPC: A61K49/22 , A61B8/00 , C08F222/38 , C08K5/1545
Abstract: To provide an acoustic coupler capable of achieving both acoustic characteristics and mechanical characteristics required for ultrasonic imaging. The invention provides a hydrogel preparation method in which a plurality of kinds of polymerizations are performed under reduced pressure, and a gel for an acoustic coupler obtained by the preparation method. For example, a gel for an acoustic coupler includes polyacrylamide having a matrix structure and alginic acid, and the alginic acid is retained in a matrix of the matrix structure of the polyacrylamide.
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公开(公告)号：US20180140273A1
公开(公告)日：2018-05-24
申请号：US15819856
申请日：2017-11-21
Applicant: HITACHI, LTD.
Inventor： Takahide TERADA , Kenichi KAWABATA , Atsurou SUZUKI , Yushi TSUBOTA , Wenjing WU , Kazuhiro YAMANAKA
CPC classification number: A61B8/4281 , A61B8/0825 , A61B8/15 , A61B8/406 , A61B8/4483 , A61B8/5207 , A61B8/54 , G01S15/8922 , G01S15/894
Abstract: There is provided an ultrasonic signal processing apparatus in which the amount of an ultrasonic propagation material in a measurement unit that stores a transducer array is reduced while the transducer array and a target are separated from each other, and thus maintenance of the ultrasonic propagation material is easily managed.The ultrasonic signal processing apparatus includes a water tank having an opening portion, a measurement unit, and a moving unit. The measurement unit which is disposed on an outside of the water tank, includes a transducer array that transmits and receives an ultrasonic signal, and a space which is filled with a material for propagating the ultrasonic signal, and measures the ultrasonic signal. The moving unit is connected to the measurement unit, and moves the measurement unit between the opening portion and the bottom portion of the water tank, along a side wall thereof.
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