Hitachi, Ltd.

Fujifilm Healthcare Corporation

Fujifilm Corporation

Hitachi Automotive Systems, Ltd.

Takahide Terada

Kenichi Kawabata

Yushi Tsubota

Kazuhiro Yamanaka

Wenjing Wu

Hiroshi Shinoda

Kazunori Hara

Atsurou Suzuki

Keisuke Yamamoto

Mutsumi Kikuchi

Ai Masuda

Tsuyoshi Matsumoto

Akihiko Kudo

Takashi Yamamoto

Yutaka Igarashi

Tomoki Inoue

Hideo Kashima

Tatsuo Nakagawa

Akira Kojima

Takanori Yamazoe

Junichi Sakano

Yusaku Katsube

Yohei Nakamura

Shinya Kajiyama

Masakazu Sugaya

Hideki Yoshikawa

Takuma Nishimoto

Yasuyuki Okuma

Hiroshi Iwasawa

Rei Asami

Atsuro Suzuki

Kohei Onda

Jiwon Hong

Takehiro Shimono

A passband characteristic of a band pass filter is adapted to an examinee while a texture of an ultrasound image is maintained or is not significantly changed. A passband characteristic of a BPF is dynamically changed in accordance with a depth of an observation point (reception focus). The passband characteristic includes convex forms, and the convex forms have peaks as highest points in a gain axis direction and have widths in a frequency axis direction. A peak position is relatively changed with respect to the width while an upper limit and a lower limit of the width are substantially maintained. Accordingly, the convex forms are biased to a low-frequency side or a high-frequency side.

Ultrasound diagnostic apparatus

There are provided an ultrasound diagnostic apparatus and a control method of the ultrasound diagnostic apparatus which allow a user to intuitively and easily correct a specifying result of a blood vessel region. An ultrasound diagnostic apparatus includes a blood vessel region specifying unit that specifies a blood vessel region on the basis of a score threshold value from ultrasound images of a plurality of frames acquired in a time-series manner; a monitor that displays the ultrasound image and the specified blood vessel region; an input device that accepts designation of a position and designation regarding addition or deletion of the blood vessel region by a user; a correction region setting unit that sets a correction region on the ultrasound image on the basis of the position designated by the user; and a threshold value correction unit that corrects the score threshold value according to a designation content by the user, in which the blood vessel region specifying unit performs processing of specifying the blood vessel region on the basis of the corrected score threshold value, from the ultrasound image in the correction region.

Ultrasound diagnostic apparatus and control method of ultrasound diagnostic apparatus

An object of the invention is to provide an ultrasonic CT device in which a reflected signal or the like from an object disposed close to transducers is received, and a reception signal thereof can be received by a receiver while transceivers whose number is smaller than the number of the transducers are used. The ultrasonic CT device includes: a transducer array in which a plurality of transducers are arranged; transceivers whose number is smaller than the number of the transducers; and a transmission transducer selector and a reception transducer selector disposed for each of the transceivers. While a transmitter included in the transceiver is selectively connected to any of the transducers in the transducer array by the transmission transducer selector, a receiver included in the transceiver is selectively connected to any of the transducers in the transducer array by the reception transducer selector.

Ultrasonic CT device, control method of ultrasonic CT device, and ultrasonic transmission and reception device

Information relevant to a state of a tissue in a subject (state information) is provided with technology reducing the amount of memory and computation necessary at the time of extracting the information. An ultrasonic wave is transmitted towards a subject, a transmission wave transmitted through the subject or a reflection wave reflected on the subject is received. A reception signal is generated on the basis of the transmission wave or the reflection wave. A tissue region candidate, of a region indicating a tissue of the subject, is set on the basis of the reception signal. State information, which is information relevant to a state of the tissue in the tissue region candidate, is calculated on the basis of the reception signal and the tissue region candidate. An ultrasonic image reflecting the state information is generated on the basis of the state information and displayed.

Ultrasonic CT apparatus and ultrasonic imaging method

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.

Ultrasonic CT device, image processing device, and image processing program that corrects a signal or pixel

Provided is a device that transmits and receives an ultrasonic wave to and from an entire periphery of a specimen while preventing a movement of the specimen. An ultrasonic wave transmission and reception device includes: an oscillator array that is arrayed with an oscillator, the oscillator transmitting and receiving an ultrasonic wave; a fixing tool that is disposed between the oscillator array and the specimen and retains the specimen; and a drive mechanism that presses at least a part of the fixing tool against the specimen as to retain the specimen. An ultrasonic wave transmitted by the oscillator array passes through the fixing tool and irradiates on the specimen, and as for the oscillator array, the oscillator array and the fixing tool are disposed in a positional relationship such that the ultrasonic wave reflected by and/or passing through by the specimen and passing through the fixing tool is received.

Ultrasonic wave transmission and reception device

According to the present invention, a clear transmitted wave image of a boundary of tissues is generated in a short time. An ultrasonic imaging device of the present invention includes a transducer array in which a plurality of transducers transmitting and receiving an ultrasound wave are arrayed; a transmission unit which delivers an electric signal to at least one of the plurality of transducers, such that the delivered electric signal is converted into an ultrasound wave, and transmits the ultrasound wave to a target; a reception unit which receives a received signal that is an electric signal output by each of the plurality of transducers having received a reflected wave and a transmitted wave of the ultrasound wave of the target; and an image generation unit which individually generates a reflected wave image of a cross section of the target using a received signal of the reflected wave and a transmitted wave image of the cross section of the target using a received signal of the transmitted wave. The image generation unit includes a reflected wave image boundary detection unit detecting a boundary of the target in the reflected wave image and generating the transmitted wave image such that a boundary in the transmitted wave image corresponding to the boundary detected by the reflected wave image boundary detection unit is emphasized.

Ultrasonic imaging device and ultrasonic imaging method using ultrasonic imaging device

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.

Ultrasonic imaging device, and ultrasonic transmission/reception method

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.

Phantom for ultrasound measurement, and ultrasound CT device

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.

Ultrasonic CT device

An ultrasound diagnosis device includes: an ultrasound probe which transmits an ultrasound wave toward a examinee and receives a reflected wave from the examinee; and a main device which controls the transmitting and receiving of the ultrasound waves from the ultrasound probe and is operated to receive a receiving signal obtained by receiving the reflected wave from the examinee by the ultrasound probe, to generate an ultrasound image of the examinee, and to display the ultrasound image on a display screen, wherein the ultrasound probe includes a plurality of subarrays having a plurality of element circuits transmitting and receiving ultrasound signals and a plurality of reference voltage sources, and the plurality of subarrays and the plurality of reference voltage sources have a one-to-one correspondence.

Ultrasound probe and ultrasound diagnosis device using the same

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.

Ultrasound imaging device and ultrasound image generation program

Medical breast examination device

To provide a system for controlling power supplies in a device including batteries, andby wireless signals with high reliability. The system includes the batteries, a power supply control devicesupplied with power from the batteries, and, and a controllerfor making wireless communication with the power supply control device. The power supply control deviceincludes a startup unitfor receiving a wireless startup signal transmitted from the controllerand controlling power supplying from the batteries to the power supply control device, and a communication unitfor making wireless communication with the controller. While the startup unitis receiving the wireless startup signal, wireless communication is made by the communication unit

Power supply control system, power supply control device and method

A power supply startup system activates a power supply of a device provided with a battery or the like at high speed by a wireless signal while suppressing current consumption on standby. The power supply startup system includes a battery, a device supplied with a power from the battery, and a controller which performs wireless communication with the device. The device includes a power supply section which generates a power supply from the battery, a startup section which receives a wireless startup signal transmitted by the controller and outputs a startup signal to the power supply section, a control section which controls the power supply section and the startup section, and a wireless communication section which performs wireless communication with the controller. The wireless startup signal includes at least two signal regions of a first stage and a second stage.

Growing community of inventors

Tokyo, Japan

Takahide Terada