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公开(公告)号：US20220283325A1
公开(公告)日：2022-09-08
申请号：US17824453
申请日：2022-05-25
Inventor： Zhanli HU , Yongfeng YANG , Chunhui ZHANG , Zhonghua KUANG , Xiaohui WANG , San WU , Dong LIANG , Xin LIU , Hairong ZHENG
Abstract: A method for processing positron emission tomography data is provided, this method includes: obtaining a first coordinate and a second coordinate respectively corresponding to two ends of a response line to be processed; determining corresponding dimensional coordinates of the response line to be processed in a sinogram based on the first coordinate and the second coordinate; and generating the sinogram corresponding to the response line to be processed based on the dimensional coordinates. According to this method, the amount of calculation of system matrix is reduced, the accuracy of position information of the generated response line is improved, and the accuracy of generated sinogram is improved accordingly.
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2.发明申请公开(公告)号：US20170363702A1
公开(公告)日：2017-12-21
申请号：US15618979
申请日：2017-06-09
Inventor： Xi PENG , Dong LIANG , Xin LIU , Hairong ZHENG
IPC: G01R33/563 , G01R33/56
CPC classification number: G01R33/56341 , A61B5/055 , A61B5/7203 , G01R33/5602 , G06T5/002 , G06T2207/10092
Abstract: The application provides a method, apparatus and computer program product for denoising a magnetic resonance diffusion tensor, wherein the method comprises: collecting data of K space; calculating a maximum likelihood estimator of a diffusion tensor according to the collected data of K space; calculating a maximum posterior probability estimator of the diffusion tensor by using sparsity of the diffusion tensor and sparsity of a diffusion parameter and taking the calculating maximum likelihood estimator as an initial value; and calculating the diffusion parameter according to the calculated maximum posterior probability estimator. The application solves the technical problem in the prior art of how to realize high precision denoising of diffusion tensor while not increasing scanning time and affecting spatial resolution, achieves the technical effects of effectively suppressing noises in the diffusion tensor and improving the estimation accuracy of the diffusion tensor.
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公开(公告)号：US20160370444A1
公开(公告)日：2016-12-22
申请号：US15103845
申请日：2014-12-05
Inventor： Xi PENG , Dong LIANG , Xin LIU , Hairong ZHENG
IPC: G01R33/50 , G01R33/561 , G01R33/56
CPC classification number: G01R33/561 , G01R33/50 , G01R33/5608 , G01R33/5611
Abstract: Disclosed is a magnetic resonance rapid parameter imaging method and system. The method comprises: obtaining a target undersampled magnetic resonance signal (S10); obtaining prior information of a parameter model (S20); performing sequence reconstruction of a target image according to the undersampled magnetic resonance signal and the prior information to obtain a target image sequence (S30); and substituting the target image sequence into the parameter estimation model to obtain object parameters and to generate parametric images (S40).
Abstract translation: 公开了一种磁共振快速参数成像方法和系统。 该方法包括：获得目标欠采样磁共振信号（S10）; 获取参数模型的先验信息（S20）; 根据欠采样的磁共振信号和先验信息执行目标图像的序列重构以获得目标图像序列（S30）; 并且将目标图像序列代入参数估计模型以获得对象参数并生成参数图像（S40）。
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公开(公告)号：US20240202873A1
公开(公告)日：2024-06-20
申请号：US18555723
申请日：2021-04-19
Inventor： Shanshan WANG , Haoyun LIANG , Hairong ZHENG , Xin LIU
CPC classification number: G06T5/20 , G06T5/50 , G06T5/60 , G06T2207/20084 , G06T2207/20221
Abstract: The present application relates to image processing technical field, and provides a method for image reconstruction, an apparatus, a terminal device, and a storage medium. The method first extracts an initial feature map of an original image, then calculates an average value of each column pixel in the initial feature map, and constructs a target row vector and duplicates the target row vector in the column direction after convolution processing, to obtain a feature map. In addition, an average value of the element of each row of pixels in the initial feature map is calculated respectively, and a target column vector is constructed. It is duplicated in a row direction to obtain another feature map, and then the two feature maps are fused. Finally, two-dimensional convolution processing is performed on a fused feature map, and a reconstructed image is generated, thereby the long-distance dependencies of the image can be captured.
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Patent Agency Ranking
5.发明申请公开(公告)号：US20210335479A1
公开(公告)日：2021-10-28
申请号：US16626661
申请日：2018-12-29
Applicant: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY CHINESE ACADEMY OF SCIENCES , SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
Inventor： Dong LIANG , Chao ZOU , Qiang HE , Guobin LI , Qiang ZHANG , Xin LIU , Hairong ZHENG
Abstract: Disclosed are information transmission method, apparatus, device and medium for medical imaging application. The method includes: an imaging device corresponding to an application authorization request is determined according to the received application authorization request, and an application permission profile of the imaging device is acquired; and a medical imaging application corresponding to the imaging device is determined according to the application permission profile of the imaging device, and medical imaging application information corresponding to the medical imaging application is transmitted to the imaging device.
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公开(公告)号：US20250148746A1
公开(公告)日：2025-05-08
申请号：US19019221
申请日：2025-01-13
Inventor： Hao PENG , Chao ZOU , Chuanli CHENG , Xin LIU , Hairong ZHENG
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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公开(公告)号：US20200241099A1
公开(公告)日：2020-07-30
申请号：US16645798
申请日：2015-12-30
Inventor： Hairong ZHENG , Xin LIU , Chuanli CHENG , Chao ZOU
IPC: G01R33/565
Abstract: A method, an apparatus, and a device for magnetic resonance chemical shift encoding imaging are provided. The method includes in a phasor-error spectrum established based on a simplified multi-point magnetic resonance signal model, determining a pixel point having a unique phase factor value and causing the phasor-error spectrum to reach a local minimum value as an initial seed point; estimating a phase factor value of a pixel point to be estimated according to the initial seed point to obtain a field map; mapping and merging the field maps at the highest resolution to obtain a reconstructed field map; determining a reconstructed seed point from the reconstructed field map, and estimating the reconstructed seed point to obtain a phase factor value of a reconstructed pixel point to be estimated.
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公开(公告)号：US20180267125A1
公开(公告)日：2018-09-20
申请号：US15986462
申请日：2018-05-22
Inventor： Lei ZHANG , Yiu-Cho CHUNG , Xin LIU , Xiaoqing HU , Hairong ZHENG
IPC: G01R33/565 , G01R33/56 , G01R33/50 , A61B5/02 , G06T11/00
Abstract: A magnetic resonance vessel wall imaging method and device. The method comprises: applying a set pulse sequence into an imaging region, wherein the set pulse sequence comprises, in chronological order, a Delay Alternating with Nutation for Tailored Excitation (DANTE) pulse train, a variable flip angle train of a three-dimensional fast spin echo (SPACE), and a flip-down pulse train (S110); acquiring a magnetic resonance signal generated in the imaging region, and reconstructing a magnetic resonance images of the vessel wall in the imaging region according to the magnetic resonance signal (S120). By adding the flip-down pulse train behind the variable flip angle train of the three-dimensional fast spin echo (SPACE), the cerebrospinal fluid signals of the whole brain can be further suppressed effectively and uniformly, and the DANTE pulse train promotes the vessel wall imaging of the head and neck jointing portion.
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9.发明公开公开(公告)号：US20240046440A1
公开(公告)日：2024-02-08
申请号：US18546425
申请日：2021-04-14
Inventor： Shanshan WANG , Hairong ZHENG , Kehan QI , Chuyu RONG , Xin LIU
CPC classification number: G06T7/0002 , G06T15/00 , G06V10/44 , G06T2207/20084 , G06T2207/30168
Abstract: An image data quality evaluation method and apparatus, a terminal device, and a readable storage medium. The image data quality evaluation method includes: inputting three-dimensional image data to be evaluated into a feature extraction network model for processing to obtain a feature matrix; processing the feature matrix on the basis of a plurality, of branch network models in a hypemetwork model to obtain a plurality of parameter matrixes, and respectively adjusting, on the basis of the plurality of parameter matrixes, parameters of a plurality of fully connected layers in a corresponding regression model; and processing the feature matrix on the basis of the adjusted regression model to obtain a quality evaluation score. The dynamic adjustment of parameters of a model is implemented on the basis of content of input data, so that the processing efficiency and the quality evaluation precision for three-dimensional image data are improved.
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