Abstract: The present disclosure relates to an ultrasound elastography system and method. The system may include a transmitting/receiving unit which transmits ultrasound pulses to a target and receives ultrasound echoes from the target to obtain the ultrasound echo signals; an imaging unit which processes the ultrasound echo signals and displays the obtained image; and an analysis unit which detects a region of interest and a shell region selected by an operator in the image, calculate elasticity parameters in a reference region and the shell region respectively, and analyzes the elasticity parameters to obtain an analysis result.

Abstract: The invention discloses a multi-port flexible AC interconnection device with active power flow control capability for an AC power grid, including a static synchronous compensator and a multi-port flexible interconnection module connected in series. The multi-port flexible interconnection module includes multiple voltage-source single-phase inverters sharing a DC bus, and each port is connected to a different AC power grid feeder line. By adjusting the amplitude and phase of the AC output voltage of the single-phase inverters connected in series on the feeder line, flexible interaction of active power between the feeder lines is realized, and decoupled control of active and reactive power on the feeder lines is achieved. By introducing the multi-port flexible interconnection module, the invention provides multiple controllable AC ports connected to multiple feeder lines, realizing flexible interconnection between the feeder lines, i.e.

Abstract: The invention relates to the technical field of medical image processing, and more particularly, to a distributed ultrasonic scanning system and a communication method. The method comprises at least one ultrasonic scanning device, comprising at least one scanning probe for performing an ultrasonic scanning operation on a patient to obtain echo data; a data acquisition unit, connected to the at least one ultrasonic scanning device, configured to receive the echo data and to compress the echo data to generate compressed data; and a processing host, connected to the data acquisition unit, configured to obtain the compressed data and to generate a first ultrasonic image according to the compressed data. The present invention has the beneficial effects that a data acquisition unit is provided to enable ultrasonic image data to effectively flow in the network, so that the problem of a poor flow of the image is avoided.

Abstract: The present disclosure relates to an ultrasound elastography system and method. The system may include a transmitting/receiving unit which transmits ultrasound pulses to a target and receives ultrasound echoes from the target to obtain the ultrasound echo signals; an imaging unit which processes the ultrasound echo signals and displays the obtained image; and an analysis unit which detects a region of interest and a shell region selected by an operator in the image, calculate elasticity parameters in a reference region and the shell region respectively, and analyzes the elasticity parameters to obtain an analysis result.

Abstract: The present disclosure relates to an ultrasound elastography system and method. The system may include a transmitting/receiving unit which transmits ultrasound pulses to a target and receives ultrasound echoes from the target to obtain the ultrasound echo signals; an imaging unit which processes the ultrasound echo signals and displays the obtained image; and an analysis unit which detects a region of interest and a shell region selected by an operator in the image, calculate elasticity parameters in a reference region and the shell region respectively, and analyzes the elasticity parameters to obtain an analysis result.

Abstract: The invention relates to the field of ultrasonic imaging detection, and more particularly, to an ultrasonic system of a contact type flexible conformal ultrasonic probe and a method for the same. The ultrasonic system comprises: a flexible probe, comprising a flexible detection surface, a plurality of probe units, and a soft film sensing surface; a switch module; a control module, comprising: a transmitting control unit for sequentially controlling the probe units in the probe array to transmit the ultrasonic signal; a receiving control unit for sequentially controlling the probe units in the probe array to receive the ultrasonic signal, and for processing the ultrasonic signal to obtain a ultrasonic image. The present invention has the following beneficial effects: the use of a flexible probe for acquiring an ultrasonic image allows to solve the problem that the operation process and imaging steps are complicated when using a rigid probe.

Abstract: Disclosed is a solid-state transformer having an uninterrupted operation ability under an AC/DC fault, in which bridge arms of a hybrid modular multilevel converter include half-bridge submodules and full-bridge submodules. The half-bridge submodules and the full-bridge submodules are connected with input ends of isolated dual-active-bridge converters via DC capacitors of the half-bridge submodules and full-bridge submodules; output ends of the isolated dual-active-bridge converters are connected in parallel to form a low-voltage DC bus; and a three-phase full-bridge inverter is connected to the low-voltage DC bus. The solid-state transformer may be provided with four ports including a medium-voltage AC port, a medium-voltage DC port, a low-voltage DC port and a low-voltage AC port which are beneficial to the interconnection of multi-voltage-level and multi-form AC/DC hybrid distribution grids. The solid-state transformer has the uninterrupted operation ability under the AC/DC fault.

Abstract: In a solid-state transformer having an uninterrupted operation ability under an AC/DC fault, bridge arms of a hybrid modular multilevel converter comprise half-bridge submodules and full-bridge submodules, the half-bridge submodules and the full-bridge submodules are interconnected with input ends of the isolated dual-active-bridge converters via DC capacitors of the submodules, output ends of the plurality of isolated dual-active-bridge converters are connected in parallel to form a low-voltage DC bus, and the three-phase full-bridge inverter is connected to the low-voltage DC bus. The solid-state transformer provided by the present invention may be provided with four ports including a medium-voltage AC port, a medium-voltage DC port, a low-voltage DC port and a low-voltage AC port which are beneficial to the interconnection of multi-voltage-grade and multi-form AC/DC hybrid distribution grids; and the solid-state transformer has the uninterrupted operation ability under the AC/DC fault.

Abstract: The invention relates to the field of ultrasonic imaging detection, and more particularly, to an ultrasonic system of a contact type flexible conformal ultrasonic probe and a method for the same. The ultrasonic system comprises: a flexible probe, comprising a flexible detection surface, a plurality of probe units, and a soft film sensing surface; a switch module; a control module, comprising: a transmitting control unit for sequentially controlling the probe units in the probe array to transmit the ultrasonic signal; a receiving control unit for sequentially controlling the probe units in the probe array to receive the ultrasonic signal, and for processing the ultrasonic signal to obtain a ultrasonic image. The present invention has the following beneficial effects: the use of a flexible probe for acquiring an ultrasonic image allows to solve the problem that the operation process and imaging steps are complicated when using a rigid probe.

Abstract: A modular multilevel converter with multi-port DC power flow control includes a modular multilevel converter topology and a DC power flow controller, wherein an input terminal of the DC power flow controller is connected in series to uppermost submodules of upper arms of the modular multilevel converter topology, and with power transfer and energy interaction between the modular multilevel converter topology and an AC power grid, a converter station or a solid state transformer based on the modular multilevel converter topology has a function of direct current power flow control. The output terminal of the DC power flow controller adopts DC/DC converters to regulate the output voltage, and a plurality of DC/DC converters share a common DC bus with the ports connected with different DC outlet lines, thereby providing a plurality of flexible and controllable DC ports.

Abstract: The invention provides an ultrasonic beam forming method based on a neural network model. The method comprises: receiving, by the processing device, the ultrasonic echo radio frequency signal, and performing a preliminary processing of the ultrasonic echo radio frequency signal, so that the ultrasonic echo radio frequency signal is applicable to the neural network model; inputting the ultrasonic echo radio frequency signal into the neural network model; performing a convolution processing on the ultrasonic echo radio frequency signal for multiple times, and performing pooling processing after each convolution processing; flattening the ultrasonic echo radio frequency signal after the last pooling process is completed, so as to convert the ultrasonic echo radio frequency signal from three-dimensional data into one-dimensional data; classifying the one-dimensional data for multiple times; and performing grayscale mapping on the classified ultrasonic echo radio frequency signal to form an ultrasonic beam.

Abstract: A modular multilevel converter with multi-port DC power flow control includes a modular multilevel converter topology and a DC power flow controller, wherein an input terminal of the DC power flow controller is connected in series to uppermost submodules of upper arms of the modular multilevel converter topology, and with power transfer and energy interaction between the modular multilevel converter topology and an AC power grid, a converter station or a solid state transformer based on the modular multilevel converter topology has a function of direct current power flow control. The output terminal of the DC power flow controller adopts DC/DC converters to regulate the output voltage, and a plurality of DC/DC converters share a common DC bus with the ports connected with different DC outlet lines, thereby providing a plurality of flexible and controllable DC ports.

Abstract: The present disclosure relates to an ultrasound elastography system and method. The system may include a transmitting/receiving unit which transmits ultrasound pulses to a target and receives ultrasound echoes from the target to obtain the ultrasound echo signals; an imaging unit which processes the ultrasound echo signals and displays the obtained image; and an analysis unit which detects a region of interest and a shell region selected by an operator in the image, calculate elasticity parameters in a reference region and the shell region respectively, and analyzes the elasticity parameters to obtain an analysis result.