公开(公告)号：US20210030393A1

公开(公告)日：2021-02-04

申请号：US16816718

申请日：2020-03-12

Applicant: Hitachi, Ltd.

Inventor： Yushi TSUBOTA ,  Kenichi KAWABATA ,  Takahide TERADA ,  Atsurou SUZUKI ,  Wenjing WU ,  Kazuhiro YAMANAKA

IPC: A61B8/08 ,  G01S15/89 ,  A61B8/14 ,  A61B8/00

Abstract: In an ultrasonic CT device for breast examination, unevenness of an ultrasonic image due to a distribution of inclination angles of a breast is reduced. The distribution of the inclination angles of a surface of a subject in a contour of the subject is obtained from a tomographic image, and a signal level of a reception signal or a pixel value of the tomographic image is corrected using the distribution of the inclination angles.

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

IPC: A61B8/00 ,  A61B8/08 ,  A61B8/15

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.

公开(公告)号：US20200320750A1

公开(公告)日：2020-10-08

申请号：US16802606

申请日：2020-02-27

Applicant: Hitachi, Ltd.

Inventor： Kazuhiro YAMANAKA ,  Hiroki TANAKA ,  Junichi SHIOKAWA ,  Tomofumi NISHIURA

IPC: G06T11/00 ,  G06N3/08 ,  G06N3/04

Abstract: An object of the invention is to provide a user with information that serves as a material for determining whether an image generated by processing including a neural network is valid. A reception signal output by an ultrasonic probe that has received an ultrasonic wave from a subject is received, and an ultrasonic image is generated based on the reception signal. A trained neural network receives the reception signal or the ultrasonic image, and outputs an estimated reception signal or an estimated ultrasonic image. A validity information generation unit generates information indicating validity of the estimated reception signal or the estimated ultrasonic image by using one or more of the reception signal, the ultrasonic image, the estimated reception signal, the estimated ultrasonic image, and output of an intermediate layer of the neural network.

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

IPC: A61B6/03 ,  A61B6/00 ,  A61B8/13

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.

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

IPC: A61B8/00 ,  A61B6/03 ,  A61B8/08 ,  G09B23/30

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.

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

IPC: A61B8/08 ,  A61B8/15 ,  A61B8/00

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.

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

IPC: A61B8/00 ,  A61B8/14 ,  A61B8/08

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.