Shenzhen Mindray Bio-medical Electronics Co., Ltd.

Shanghai Jiaotong University

Other

Ruijin Hospital, School of Medicine

Shanghai Soundwise Technology Co., Ltd.

Jianqiao Zhou

Shuangshuang Li

Gang Shi

Xu Cai

Jianwen Zhang

Weixin Fang

Ruixing Zhu

Lei Chen

Jing Zhao

Han Wang

Jiacheng Wang

Xuebing Chen

Zhenhua Liu

Weina Jiang

Yixin Zhang

Yunyan Zhang

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.

Neural network model and ultrasonic beam forming method based on neural network model

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.

Ultrasound elastography imaging system and method

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.

Ultrasonic system of contact type flexible conformal ultrasonic probe and method for the same

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.

Solid-state transformer having uninterrupted operation ability under AC/DC fault and control method thereof

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.

Modular multilevel converter with multi-port DC power flow control and control method thereof

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Shanghai, China

Jianqiao Zhou