DELAYED EXCITATION ULTRASONIC IMAGING METHOD AND APPARATUS AND DELAYED EXCITATION SYSTEM

    公开(公告)号:US20190053786A1

    公开(公告)日:2019-02-21

    申请号:US16167060

    申请日:2018-10-22

    Abstract: A delayed excitation ultrasonic imaging method includes: generating a regulating clock, and performing, according to the regulating clock, delayed excitation on an ultrasonic transducer once or multiple times; performing data collection on an ultrasonic echo signal of the ultrasonic transducer and signals after each time of performing delayed excitation; synthesizing and superimposing data collected to obtain high sampling rate data; and performing ultrasonic imaging according to the high sampling rate data. A delayed excitation ultrasonic imaging apparatus and system are also provided. By performing delayed excitation on the ultrasonic transducer, the high-frequency ultrasonic imaging is realized by low-frequency sampling and delayed excitation, which can greatly reduce the cost of the ultrasonic imaging system.

    MAGNETIC-RESONANCE IMAGING METHOD, APPARATUS AND SYSTEM, AND STORAGE MEDIUM

    公开(公告)号:US20210333344A1

    公开(公告)日:2021-10-28

    申请号:US16624478

    申请日:2019-09-17

    Abstract: Disclosed are a magnetic-resonance imaging method, apparatus and system, and a storage medium. The method includes acquiring an initial model of magnetic-resonance imaging and establishing an initial imaging model according to an iterative algorithm used for solving the initial model, where the iterative algorithm includes at least one of an undetermined parameter, an undetermined solving operator or an undetermined structural relationship; training the initial imaging model on the basis of sample data to generate a magnetic-resonance imaging model, where training of the initial imaging model is used for learning the at least one of the undetermined parameter, the undetermined solving operator or the undetermined structural relationship in the iterative algorithm; and acquiring under-sampled K-space data to be processed, inputting the under-sampled K-space data into the magnetic-resonance imaging model, and generating a magnetic-resonance image.

    METHOD AND DEVICE OF PROCESSING PLAQUES IN MAGNETIC RESONANCE IMAGING OF VESSEL WALL, AND COMPUTER DEVICE

    公开(公告)号:US20200320704A1

    公开(公告)日:2020-10-08

    申请号:US16910074

    申请日:2020-06-24

    Abstract: A method of processing plaques in magnetic resonance imaging of vessel wall include: step S101, training a generative adversarial network and a capsule neural network to obtain a trained generator network and a trained capsule neural network; and step S102, cascade-connecting the trained generator network with the capsule neural network into a system to recognize and classify plaques in magnetic resonance imaging of vessel wall. In one aspect, the capsule neural network has more abundant vascular plaques characteristic information represented by vector; in another aspect, when the trained generator network and the capsule neural network are cascaded into the system to recognize and classify the plaques in magnetic resonance imaging of vessel wall, an accuracy of recognition and classification may be greatly improved. A device for processing the method as well as a computer for implementing are also disclosed.

    CHEMICAL SHIFT CODED IMAGING METHOD BASED ON TRANSITION REGION AND REGIONAL ITERATIVE PHASOR EXTRACTION

    公开(公告)号:US20250148746A1

    公开(公告)日:2025-05-08

    申请号:US19019221

    申请日:2025-01-13

    Abstract: The present disclosure discloses a chemical shift coded imaging method based on a transition region and regional iterative phasor extraction. Acquiring an initial image, and determining an initial phasor solution of the transition region based on the initial image; performing regional iterative phasor extraction in at least two set directions by taking the initial phasor solution as initial information, and obtaining a target phasor solution based on a regional iterative phasor extraction result corresponding to each set direction; and determining a first chemical composition signal and a second chemical composition signal based on the target phasor solution, and performing chemical shift coded imaging based on the first chemical composition signal and/or the second chemical composition signal. By means of regional iterative phasor extraction in a plurality of dimensions, wrong phasor information is transferred independently along different dimensions, wrong information transferred in different directions is excluded.

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