公开(公告)号：US20220401075A1

公开(公告)日：2022-12-22

申请号：US17807796

申请日：2022-06-20

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Takeshi SATO

IPC: A61B8/08 ,  G01S7/52 ,  A61B8/00

Abstract: An ultrasound diagnostic apparatus according to an embodiment includes an ultrasound probe, and processing circuitry. The ultrasound probe performs transmission of ultrasonic pulses of different polarities to different transmission positions of a subject for multiple times. The processing circuitry performs, for each of the different polarities, reception beam-forming processing with respect to plural reception signals acquired by transmission of plural ultrasonic pulses of an identical polarity. The processing circuitry extracts a non-linear signal by adding up reception signals of the different polarities at an identical reception position, the signals subjected to reception beam forming.

公开(公告)号：US20220361843A1

公开(公告)日：2022-11-17

申请号：US17740853

申请日：2022-05-10

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Takeshi SATO

IPC: A61B8/14 ,  G10K11/34 ,  G01S15/89 ,  G01S7/52

Abstract: An ultrasound diagnosis apparatus according to an embodiment includes an ultrasound probe and processing circuitry. The ultrasound probe includes a plurality of transducer elements arranged two-dimensionally and includes a plurality of transducer element groups of a Row-Column Addressing type in which, when ultrasound transmission is to be performed, a plurality of first transducer elements arranged in the direction of one of two axes intersecting each other are connected in common to one another and in which, when ultrasound reception is to be performed, a plurality of second transducer elements arranged in the direction of the other of the two axes are connected in common to one another. A plurality of sets that are each made up of the two axes and correspond to the plurality of transducer element groups of the Row-Column Addressing type are mutually different.

公开(公告)号：US20230248336A1

公开(公告)日：2023-08-10

申请号：US18164920

申请日：2023-02-06

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Takeshi SATO

IPC: A61B8/08 ,  A61B8/00

CPC classification number: A61B8/5207 ,  A61B8/4477

Abstract: An ultrasound diagnosis apparatus according to an embodiment includes an ultrasound probe including a plurality of transducer elements arranged two-dimensionally. The plurality of transducer elements are a plurality of Row-Column Addressing transducer elements configured so that: when a first ultrasound wave is to be transmitted, the first ultrasound wave is caused to be transmitted from a first transducer element group including a plurality of transducer elements that are arranged in a direction along one axe and are connected in common to one another; when a reflected wave of the first ultrasound wave is to be received, the reflected wave of the first ultrasound wave is caused to be received by a second transducer element group including a plurality of transducer elements that are arranged in a direction along the other axe and are connected in common to one another; when a second ultrasound wave is to be transmitted, the second ultrasound wave is caused to be transmitted from the second transducer element group; and when a reflected wave of the second ultrasound wave is to be received, the reflected wave of the second ultrasound wave is caused to be received by the first transducer element group.

公开(公告)号：US20220031289A1

公开(公告)日：2022-02-03

申请号：US17443848

申请日：2021-07-28

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Kentaro KIKUCHI ,  Takatoshi OKUMURA ,  Ryota OSUMI ,  Takeshi SATO

IPC: A61B8/00

Abstract: The ultrasonic probe according to any of embodiments includes a transmitting/receiving circuit, a power supply circuit, and a probe control circuit. The transmitting/receiving circuit is configured to control transmission and reception of ultrasonic waves. The power supply circuit is configured to function as a power source for the transmitting/receiving circuit. The probe control circuit is configured to determine a scan mode, and to control a frequency of switching noise of the power supply circuit according to the scan mode.

公开(公告)号：US20200069294A1

公开(公告)日：2020-03-05

申请号：US16560656

申请日：2019-09-04

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Takeshi SATO

IPC: A61B8/08 ,  A61B8/14 ,  G01S7/52

Abstract: An ultrasound diagnosis apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to sequentially obtain eigenvalues of a correlation matrix of a scan range, the correlation matrix being obtained from a data sequence of reflected-wave data in mutually the same position acquired by performing an ultrasound scan on the scan range formed with a plurality of scanning lines. The processing circuitry is configured to determine a filter coefficient to be applied to a Moving Target Indicator (MTI) filter, on a basis of the plurality of eigenvalues obtained at mutually-different points in time.

公开(公告)号：US20240173008A1

公开(公告)日：2024-05-30

申请号：US18517039

申请日：2023-11-22

Applicant: Canon Medical Systems Corporation

Inventor： Takeshi SATO

IPC: A61B8/06 ,  A61B8/00 ,  A61B8/08 ,  G01S15/89

CPC classification number: A61B8/06 ,  A61B8/4488 ,  A61B8/488 ,  G01S15/8995 ,  A61B8/461

Abstract: An ultrasound diagnostic apparatus repeats ultrasonic wave transmissions with different transmission angles in units of packets. The apparatus receives reception signals. The apparatus performs beamforming on the reception signals. The apparatus performs MTI filtering on initial images for each group of the same transmission angle. The apparatus performs principal component analysis on the MTI images for each of the packets having the same set of transmission angles. The apparatus performs coherent addition on the principal component images for each of the packets to generate coherent addition images.

公开(公告)号：US20230240658A1

公开(公告)日：2023-08-03

申请号：US18161114

申请日：2023-01-30

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Takeshi SATO

IPC: A61B8/08 ,  G06T7/20 ,  A61B8/06

CPC classification number: A61B8/488 ,  G06T7/20 ,  A61B8/06 ,  G06T2207/30104 ,  G06T2207/10132

Abstract: An ultrasonic diagnostic apparatus of an embodiment includes an ultrasonic probe and processing circuitry. The ultrasonic probe repeatedly performs scanning in which a plane wave or a diffused wave is continuously transmitted a plurality of times in the same direction in a plurality of directions. The processing circuitry performs processing of applying a moving target indicator (MTI) filter to an unequal interval data sequence in the same direction obtained by the scanning and extracting a blood flow signal in each of the plurality of directions, performs processing of generating an autocorrelation signal by performing an autocorrelation operation on a plurality of blood flow signals in the same direction for each of the directions, and estimates a velocity value of blood flow on the basis of a complex signal generated by performing complex addition of a plurality of autocorrelation signals generated for the plurality of directions.

公开(公告)号：US20220054104A1

公开(公告)日：2022-02-24

申请号：US17390262

申请日：2021-07-30

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Takeshi SATO

IPC: A61B8/06 ,  G06T7/262 ,  A61B8/14

Abstract: An ultrasonic diagnostic device according to an embodiment includes a collecting unit and processing circuitry. The collecting unit performs ultrasonic scanning with respect to a subject and collects reflected-wave data. The processing circuitry performs short-time Fourier transform in the depth direction with respect to the reflected-wave data; applies a nonlinear adaptive MTI filter on a frequency-by-frequency basis with respect to the result of the short-time Fourier transform; and performs inverse short-time Fourier transform in the depth direction with respect to the output of the nonlinear adaptive MTI filter. Then, the processing circuitry estimates blood flow information from the result of the inverse short-time Fourier transform.

公开(公告)号：US20200234461A1

公开(公告)日：2020-07-23

申请号：US16732386

申请日：2020-01-02

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Ryota OSUMI ,  Takeshi SATO ,  Takatoshi OKUMURA

IPC: G06T7/62 ,  G06T7/00 ,  G06T3/00

Abstract: An ultrasound diagnostic apparatus according to an embodiment includes a processing circuitry. The processing circuitry acquires first image data that is image data obtained during the ultrasound scan executed on the object and that is image data before the coordinate conversion corresponding to the format of the ultrasound scan. The processing circuitry uses the trained model generated through the learning using the first image data obtained during the previously executed ultrasound scan and the area including the object in the first image data to estimate the area in the acquired first image data.

公开(公告)号：US20190159750A1

公开(公告)日：2019-05-30

申请号：US16203082

申请日：2018-11-28

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Takeshi SATO

IPC: A61B8/06 ,  A61B8/00 ,  A61B8/08

Abstract: An ultrasound diagnosis apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured: to generate a piece of reflected-wave data by performing a phased addition process while using reflected-wave signals generated by transmitting an ultrasound wave with respect to mutually the same scanning line; to speculate a degree of saturation of the reflected-wave signals observed before the phased addition process on the basis of a relationship between signals and noise in a data sequence represented by a set made up of pieces of the reflected-wave data; and to output a result of the speculation. The processing circuitry is configured to cause a display to display data based on the result of the speculation.