Hitachi Medical Corporation

Hitachi, Ltd.

Mitsubishi Heavy Industries Limited

The University of Tokyo

Other

Kabushiki Kaisha Toshiba

Minolta Camera Kabushiki Kaisha

The University of Electro-communications

Public University Corporation Yokohama City University

The Jikei University

Lily Medtech, Inc.

Takashi Azuma

Shin-ichiro Umemura

Shinichiro Umemura

Hideki Yoshikawa

Yuichi Miwa

Kunio Hashiba

Kenji Mashio

Kenichi Kawabata

Jun Shibuya

Hiroshi Fukuda

Toshiyuki Mine

Hiroki Tanaka

Tatsuya Nagata

Takashi Sugiyama

Takeo Yamada

Masanori Ogino

Shuntaro Machida

Tatsuya Hayashi

Nagaharu Hamada

Tetsuya Hayashi

Jun Kubota

Tomohiko Tanaka

Hirotaka Baba

Kazunari Ishida

Tetsuya Ishikawa

Akira Sasaki

Hirofumi Nakamura

Yo Taniguchi

Natsuki Yokoyama

Hiroyuki Fukuda

Katsuhiro Kuroda

Hiroshi Kanda

Ryuichi Shinomura

Miyuki Kono

Miyuki Ikeda

Yusuke Seki

Hiroshi Masuzawa

Tsukasa Fujimori

Katsunori Asafusa

Ichiro Sakuma

Takae Yamashita

Susumu Shiizuka

Masafumi Utsumi

Junichi Nishitani

Kazuaki Sasaki

Hiroshi Kuribara

Ken-ichi Kawabata

Marie Tabaru

Toshiro Kamiuchi

Nami Sugita

Chiharu Takayama

Mariko Yamamoto

Takashi Nakasugi

Ikuo Hikawa

Hironari Masui

Yuko Hanaoka

Teiichiro Ikeda

Hiroshi Tanimoto

Naoyuki Murayama

Naohiko Sugita

Mamoru Mitsuishi

Kyohei Tomita

Hiroyuki Tsukihara

Yoichiro Matsumoto

Norihiro Koizumi

Takashi Okai

Hiroshi Furuhata

Yu Nishiyama

Kazushi Numata

Kiyoshi Yoshinaka

Syuntaro Machida

Yukio Homma

Akiko Osada

Satoshi Ootomo

Jun Onoda

Tsutomu Ishiguro

Atsushi Kayasuga

Izumu Hosoi

Hideyo Miyazaki

Hideyo Kamada

Tianhan Tang

Shin-Ichiro Umemura

This abnormality diagnosis system for diagnosing abnormalities in a plant is provided with: an abnormality diagnosis control unit which, with respect to an instrument parameter measured in a plant determined to have an indication of abnormality, predicts the development of the instrument parameter by extrapolation, and which generates an abnormality manifestation pattern that is a pattern of behavior of the instrument parameter after prediction; and a data storage unit which stores a plurality of abnormality model patterns PA, PB that are patterns of behavior of the instrument parameters corresponding to causes CA, CA, CB, CBof plant abnormality. The abnormality diagnosis control unit makes a matching determination between the abnormality manifestation pattern that has been generated and the plurality of abnormality model patterns PA, PB stored in the data storage unit, and identifies, as the cause of the abnormality in the abnormality manifestation pattern.

Abnormality diagnosis system and abnormality diagnosis method

A plant maintenance assisting system is provided with: an abnormality indication monitoring system; an abnormality diagnosis system; a maintenance plan creation system; a risk evaluation system; and a component management system. On the basis of risk information and abnormality diagnosis information that is a result of diagnosis by the abnormality diagnosis system, the risk evaluation system determines the need for maintenance work with respect to an abnormality indicating facility. In a case where it is determined that maintenance work with respect to the abnormality indicating facility is necessary, the maintenance plan creation system sets, in a maintenance plan, maintenance implementation timing of maintenance work with respect to a facility including the abnormality indicating facility. On the basis of component management information, the component management system determines whether a component can be procured at the maintenance implementation timing set by the maintenance plan creation system.

Plant maintenance assisting system

Among a plurality of sensors that detect a state of a control subject, a relationship fluctuation level between a magnitude of a signal output by a subject sensor and a magnitude of a signal output by another related sensor is calculated for each subject sensor and related sensor combination. Moreover, the subject sensor and related sensor combinations for which a value of the relationship fluctuation level is a predetermined value or more are identified, and a respective number of appearances of the subject sensor and the related sensor included in the identified combinations thereof is calculated.

Anomaly monitoring device and method for producing anomaly signs according to combinations of sensors based on relationship of sensor fluctuations

An abnormality diagnosis system for diagnosing an abnormality event in an atomic power generation plant on the basis of an abnormality indication detection result from an abnormality indication monitoring system is provided with an abnormality diagnosis control unit which acquires a parameter transition in a monitoring period from a non-detection timing to an indication detection timing, and a parameter contribution in the monitoring period and a database. The abnormality diagnosis control unit executes a matching determination between the parameter transition and parameter contribution that have been acquired from the abnormality indication monitoring system, and a parameter transition for determination and a parameter contribution for determination that have been stored in the database, and identifies an abnormality event and an abnormality indication facility that are associated with the parameter transition and parameter contribution determined to be matching.

Abnormality diagnosis system

An ultrasonic diagnostic system includes elements disposed around a subject to transmit and/or receive ultrasonic waves. A controller controls the elements so that some of the elements disposed in a first region transmit ultrasonic waves at a first angle to a diagnosis target in the subject, some of the elements disposed in a second region receive reflected waves of the ultrasonic waves, which are reflected from the diagnosis target at a second angle, and some of the elements disposed in a third region receive reflected waves of the ultrasonic waves, which are reflected from the diagnosis target at a third angle distinct from the second angle. An operator calculates a velocity vector of the diagnosis target using the reflected waves received by the some of the elements disposed in the second region and the reflected waves received by the some of the elements disposed in the third region.

Ultrasonic diagnostic system and ultrasonic diagnostic method

Provided is an in vivo movement tracking apparatus configured to track a portion of interest that moves in vivo, in which accuracy and robustness of tracking are improved. The apparatus is configured to determine an estimated position of ah organ in a biological image based on the past movement of the organ and search for contour points corresponding to a plurality of control points, respectively, representing a contour shape of the organ in a region corresponding to the estimated position, to thereby determine an estimated contour of the organ based on the contour points. The in vivo movement tracking apparatus is configured to determine a position of a portion of interest, which moves in association with the organ, based on the estimated contour with reference to previously acquired sample data regarding a positional relationship between a contour of the organ and the portion of interest.

In vivo movement tracking apparatus

An atomic power plant operation system for assisting the operation of an atomic power generation plant is provided with: an operation monitoring system which monitors and controls the operation of the atomic power generation plant; an abnormality indication monitoring system which, on the basis of an operation history of the atomic power generation plant, monitors an indication of abnormality in the atomic power generation plant; an abnormality diagnosis system which, on the basis of a result of abnormality indication that has been detected, makes an abnormality diagnosis for the atomic power generation plant; and a maintenance system for performing maintenance and management of the atomic power generation plant, wherein the systems are communicably connected, and the abnormality diagnosis system provides the maintenance system with the result of the abnormality diagnosis of the atomic power generation plant.

Plant operation system and plant operation method

A plant abnormality predict detection system for detectably monitoring an indication of abnormality in an atomic power generation plant is provided with: a data storage unit which stores plant operation data including an instrument parameter measured in the atomic power generation plant; and a monitoring and control unit which, on the basis of the plant operation data, detects an indication of abnormality in the atomic power generation plant, wherein the atomic power generation plant performs a base-load operation so that the instrument parameter has a prescribed target value, and wherein the monitoring and control unit, on the basis of past plant operation data, sets a normal range W that is a range in which the instrument parameter at the current time transitions normally, and detects an indication of abnormality when the instrument parameter at the current time exceeds the normal range W that has been set.

Plant abnormality prediction detection system

A weight value used for a beamforming process performed on received signals in an ultrasound imaging apparatus is obtained with a small amount of computations and with a high degree of precision, even when a method of adaptive signal processing is employed. Multiple elementsreceive ultrasound signals from a test subject, and the similarity operatorobtains the similarity between the received signals x(n). By using the similarity C(n) between the received signals obtained by the similarity operator, the adaptive weight operatorcomputes the adaptive weight w(n) in association with the similarity. The beamforming operatoruses the adaptive weight w(n) and the received signal x(n) to generate a beamforming output. The imaging processoruses the beamforming output to generate image data. By way of example, the similarity operatorperforms computations of the similarity in the time direction.

Ultrasound imaging apparatus

A magnetic resonance measuring equipment capable of detecting a nuclear magnetic resonance signal with a higher sensitivity and a higher resolution in comparison with related magnetic resonance measuring equipment. The magnetic resonance measuring equipment modulates a nuclear magnetic resonance signal by applying a vibration (sonic wave) of a known frequency, which is higher than the frequency of the nuclear magnetic resonance signal, to an examination object, and detects the modulated signal by performing lock-in detection, which makes it possible that the magnetic resonance measuring equipment detects the nuclear magnetic resonance signal with a high sensitivity. In addition, after irradiating a local area of the object with an ultrasonic wave, and modulating the nuclear magnetic resonance signal derived from the irradiated local area, the magnetic resonance measuring equipment can detect the nuclear magnetic resonance signal with a high resolution.

Magnetic resonance measuring equipment

When multiple tissues having differing speeds of sound are intermixed in the viewing field of a measured subject such as a living body, the invention measures hardness, such as modulus of elasticity or viscosity, with high precision.

Ultrasound diagnosis apparatus

Provided is a technology which quantitatively measures blood flow in the vicinity of circulatory organs. An ultrasound image capture device according to the present invention removes an image portion corresponding to an organ shape by taking the difference of a multi-frame ultrasound image, and thereafter computes a measured value of a blood flow velocity vector on the basis of a plurality of images at different timings (as per FIG.).

Ultrasound image capture device, ultrasound image capture method, ultrasound image capture program

Provided is an image diagnostic device with which it is possible to correct location misalignment of an image capture subject, and to improve the reliability of the result of the correction, in time series image data. An image diagnostic device may include an input part () which receives image data input; a correction unit () which computes a correction vector which denotes location misalignment of an image capture subject, and selects image data used with an image correction unit; an image correction part () which carries out a correction process on the image data based on the correction vector and creates corrected image data; a control part () which controls the correction unit and the image correction part; a memory () which stores the corrected image data and measurement data as stored data; an output unit () which outputs the stored data externally; a display unit () which displays the stored data; and an external input device () where an operator makes an input operation.

Image diagnostic device and image correction method

An objective is to enable calculation of a distribution of a physical property such as a density inside a measurement object, even when the distribution of the physical property value is non-uniform, within a feasible period of time without causing image deterioration due to phenomena such as refraction and multiple-reflections caused by the non-uniformity. To this end, the physical property value that makes an evaluation quantity be an extremum is outputted, where the evaluation quantity is a liner sum or a product of exponential function of: an equation residual quantity that is a residual being a difference between an operator term and an external force term of an equation of motion; a non-uniformity detection equation residual quantity that is a residual of an equation of detecting the non-uniformity of the physical property value from a matching degree of solutions of the equation of motion under two types of boundary conditions; and a conditional equation residual quantity that is a residual of a constraint condition.

Image reconstruction method and device

An ultrasonic image processing method and device, and an ultrasonic image processing program which can correspond to analytical methods different depending on a region or the purpose of a diagnosis or treatment. The ultrasonic image processing method comprises an image data creation step which stores a detection result obtained by irradiating a subject with ultrasonic waves by an irradiating section and detecting an ultrasonic signal from the subject by a detecting section and creates at least two-frame image data different in detection timing on the basis of the stored detection result, a motion vector distribution image creation step which creates a motion vector distribution image on the basis of a predetermined motion vector analysis through the use of a plurality frames of the image data, and a conversion step which converts a vector distribution image to a scalar distribution image on the basis of a plurality of established regions of interest (ROI).

Ultrasonic image processing method and device, and ultrasonic image processing program

Growing community of inventors

Kawasaki, Japan

Takashi Azuma