Shenyang Neusoft Medical Systems Co., Ltd.

Coupang, Corporation

Shanghai Neusoft Medical Technology Co., Ltd.

Shenyang University of Technology

Neusoft Medical Systems Co., Ltd.

Hongyu Guo

Hongbing Hu

Haoda Ding

Gang Yu

Weiwei Shen

Xinqi Yu

Feng Huang

Qin Xu

Cao Chen

Ying Wang

Yongfa Yang

According to an image processing method and system for improving three-dimensional display effect of blood vessels provided by the present invention, the image processing method comprises the following steps: design an interpolation algorithm to preprocess the original data to obtain a preprocessed image based on the original image volume data before projection; determine the blood vessel trend according to the preprocessed image, eliminate isolated points, and perform image smoothing processing on the blood vessel trend to obtain a smooth image; and process the smooth image by a nonlinear change method to perform nonlinear enhanced display of blood vessels and suppress the background. And improve the display effect of blood vessel signals.

Image processing method and system for improving three-dimensional display effect of blood vessels

A system for regulating online merchandise link activity. The system may comprise a memory storing instructions and at least one processor configured to execute the instructions. The instructions may comprise: maintaining a set of items for online link processing, the items being associated with a website; selecting a first item from the set of items; receiving an electronic request from a first affiliate system related to the first item; registering the first affiliate system as associated with the first item; generating an online link associated with the first item and the registered affiliate system; detecting an actuation of the online link, the actuation being associated with digital activity; and, based on the detected actuation and digital activity, permitting or denying the first affiliate system from operating the online link.

Systems and methods for regulating online merchandise link activity

A magnetic resonance imaging (MRI) method is provided. The method includes: a first echo signal and a second echo signal generated from each of channels of a MRI device are acquired by performing a pre-scanning according to an imaging sequence; a correction displacement with which an imaging phase consistency is maximum is determined by shifting a signal curve of the second echo signal for each of the channels for a plurality of times; a one-order phase correction value and a zero-order phase correction value for the channels are determined under the imaging sequence according to the correction displacement; a formal scanning is performed according to the imaging sequence to obtain scanning data; and a phase correction is performed on the scanning data according to the one-order phase correction value and the zero-order phase correction value to obtain target scanning data for reconstructing an image.

Magnetic resonance imaging

Methods, devices and apparatus for reconstructing a magnetic resonance image are provided. In one aspect, a method includes: determining array coil images according to first data collected by array coils of an MRI device during a prescan, where each coil of the array coils corresponds to a respective one of channels; determining a quadrature body coil image according to at least one of second data collected by a quadrature body coil of the MRI device during the prescan and the first data collected by the array coils; obtaining a corrected quadrature body coil image by correcting an uniformity of the quadrature body coil image; determining coil sensitivity maps according to the array coil images and the corrected quadrature body coil image; and reconstructing a magnetic resonance image with third data collected by the array coils during a normal scan according to the coil sensitivity maps.

Magnetic resonance image reconstruction

In an example, a method and apparatus for obtaining an image mask is provided. After a magnitude image and a phase image of a to-be-processed image is obtained, magnitude coherent data of each pixel point in the magnitude image and phase coherent data of each pixel point in the phase image may be calculated. Then, a binarization threshold processing may be performed on the magnitude coherent data of each pixel point in the magnitude image to obtain a magnitude image mask. A binarization threshold processing may be performed on the phase coherent data of each pixel point in the phase image to obtain a phase image mask. In this way, an image mask of the to-be-processed image may be obtained by using the magnitude image mask and the phase image mask.

Obtaining image mask

Methods and apparatus, including computer programs encoded on a computer storage medium, for image reconstruction are provided. According to an example of the methods, an image reconstruction may be performed to generate a first set of reconstructed data with a first set of projection data comprising a plurality of first projection data each corresponding to a respective projection angle of a plurality of projection angles. A second set of projection data comprising second projection data for each projection angle may be generated with the first set of reconstructed data. The first set of projection data may be corrected based on a shifting distance between the first projection data and the second projection data for each projection angle. Then, a second set of reconstructed data may be generated with the corrected first set of projection data, and a reconstructed image may be generated according to the second set of reconstructed data.

Image reconstruction

Methods and apparatus, including computer programs encoded on a computer storage medium, for image reconstruction are provided. The methods include: accessing a first set of projection data including a plurality of first projection data each corresponding to a respective projection angle of a plurality of projection angles, generating a first set of reconstructed data by image reconstruction with the first set of projection data, generating a second set of projection data comprising a plurality of second projection data each corresponding to a respective projection angle by projection calculation with the first set of reconstructed data, generating a third set of projection data by optimizing the first set of projection data based on a correlation between respective first projection data and respective second projection data corresponding to each projection angle, and generating a second set of reconstructed data by image reconstruction with the third set of projection data.

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Shenyang, China

Hongyu Guo