公开(公告)号：US20200027199A1

公开(公告)日：2020-01-23

申请号：US16335835

申请日：2017-11-10

Applicant: Hitachi, Ltd.

Inventor： Nobuhiko FUJII

IPC: G06T5/00 ,  A61B8/08

Abstract: A basic image generation unit generates a base frame by synthesizing a reception frame sequence obtained by transmission/reception of ultrasonic waves, and an edge-enhanced image generation unit generates a compensation frame where an edge component of an object is emphasized based on the reception frame sequence. A synthesis unit generates an output frame by synthesizing the base frame and the compensation frame.

公开(公告)号：US20180203104A1

公开(公告)日：2018-07-19

申请号：US15525386

申请日：2015-10-13

Applicant: Hitachi, Ltd.

Inventor： Nobuhiko FUJII

IPC: G01S7/52 ,  G01S15/89 ,  A61B8/08 ,  A61B8/06 ,  A61B8/13

CPC classification number: G01S7/52095 ,  A61B8/06 ,  A61B8/13 ,  A61B8/488 ,  G01S15/8977 ,  G01S15/8979 ,  G01S15/8993

Abstract: The purpose of the present invention is to improve the accuracy of Doppler measurements. An ultrasonic diagnosis device comprises: a transmission unit 12 for transmitting, through a probe 14, an ultrasonic wave for each of a plurality of transmit beams formed at different positions or in different directions; a reception unit 20 for receiving, through the probe 14, an ultrasonic wave for each receive beam included in a receive beam set formed to correspond to each transmit beam; a Doppler processing unit 24 for determining a Doppler measurement for each of the receive beams; and a combining/selecting unit 26 for combining a first Doppler measurement determined for a first receive beam belonging to a receive beam set formed to correspond to a first transmit beam and a second Doppler measurement determined for a second receive beam belonging to a receive beam set formed to correspond to a second transmit beam when the first receive beam and the second receive beam are in a predetermined positional relationship.

公开(公告)号：US20200226721A1

公开(公告)日：2020-07-16

申请号：US16695558

申请日：2019-11-26

Applicant: Hitachi, Ltd.

Inventor： Aya KISHIMOTO ,  Nobuhiko FUJII

IPC: G06T5/00 ,  G06T5/20 ,  G06T7/30 ,  G01S15/89

Abstract: Provided is a technique capable of simultaneously satisfying two requests of removing a speckle and clarifying a tissue structure. A noise in an ultrasonic image is removed, and a morphology processing is performed on a noise-removed image. The morphology processing includes a first calculation of performing dilation and erosion and a second calculation of performing opening and closing, and determines a value of a structural element used in the second calculation of the morphology by using a result of the first calculation performed on the noise-removed image.

公开(公告)号：US20210312594A1

公开(公告)日：2021-10-07

申请号：US17217028

申请日：2021-03-30

Applicant: Hitachi, Ltd.

Inventor： Kazuhiro YAMANAKA ,  Teiichiro IKEDA ,  Nobuhiko FUJII ,  Misaki HIROSHIMA

IPC: G06T5/00 ,  G06T5/20 ,  A61B8/14 ,  A61B8/00 ,  A61B8/08 ,  G16H50/20 ,  G16H30/40

Abstract: An ultrasonic imaging apparatus is capable of removing noise for each tissue from a received signal of a living tissue in which a plurality of tissues are intricately intertwined, and suppressing artifacts even at a tissue boundary. An evaluator receives one or more time-series ultrasonic signals obtained by receiving an ultrasonic wave from a subject by an ultrasonic probe after transmitting an ultrasonic wave, and generates a filter control signal for setting a characteristic value of a filter for removing noise contained in the ultrasonic signal, for a time-series direction of the ultrasonic signal. A filter processor removes the noise by processing the ultrasonic signal of the corresponding signal characteristic value by the filter having the characteristic value set based on the filter control signal. A smoothing processor that smooths distribution of the filter control signal is disposed between the evaluator and the filter processor.