Jian Xu

US Patent:

20220409084, Dec 29, 2022

Filed:

Dec 23, 2021

Appl. No.:

17/645753

Inventors:

- Shanghai, CN
Qi LIU - Houston TX, US
Yongquan YE - Houston TX, US
Jian XU - Houston TX, US
Zhongqi ZHANG - Houston TX, US

Assignee:

SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD. - Shanghai

International Classification:

A61B 5/055
G01R 33/48
G01R 33/561

Abstract:

A method may include obtaining a plurality of imaging signals collected by applying a wave encoding gradient to a region of interest (ROI) of a subject. The method may also include obtaining a plurality of auxiliary signals associated with the ROI. The method may also include obtaining a point spread function corresponding to the wave encoding gradient. The method may also include determining, based on the plurality of auxiliary signals, temporal information relating to at least one temporal dimension of the ROI. The method may also include determining, based on the plurality of auxiliary signals, the plurality of imaging signals, and the point spread function, spatial information relating to at least one spatial dimension of the ROI. The method may also include generating at least one target image of the ROI based on the temporal information and the spatial information.

US Patent:

20220392073, Dec 8, 2022

Filed:

Jun 19, 2022

Appl. No.:

17/807721

Inventors:

- Shanghai, CN
Yu DING - Houston TX, US
Qi LIU - Houston TX, US
Jian XU - Houston TX, US

Assignee:

SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD. - Shanghai

International Classification:

G06T 7/00
G06T 7/136
G06T 7/143
G06K 9/62
A61B 5/00
A61B 6/00
A61B 6/03
A61B 5/055
G06V 10/26

Abstract:

A method for medical imaging may include obtaining a plurality of successive images of a region of interest (ROI) including at least a portion of an object's heart. The plurality of successive images may be based on imaging data acquired from the ROI by a scanner without electrocardiography (ECG) gating. The plurality of successive images may be related to one or more cardiac cycles of the object's heart. The method may also include automatically determining, in the plurality of successive images, target images that correspond to at least one of the one or more cardiac cycles of the object's heart.

US Patent:

20220262001, Aug 18, 2022

Filed:

Apr 25, 2022

Appl. No.:

17/660633

Inventors:

- Shanghai, CN
Yu DING - Houston TX, US
Qi LIU - Houston TX, US
Jian XU - Houston TX, US

Assignee:

SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD. - Shanghai

International Classification:

G06T 7/00
G01R 33/56
G01R 33/48

Abstract:

A method may include acquiring MR signals by an MR scanner and generating image data in a k-space according to the MR signals. The method may also include classifying the image data into a plurality of phases. Each of the plurality of phases may have a first count of spokes. A spoke may be defined by a trajectory for filling the k-space. The method may also include classifying the plurality of phases of the image data into a plurality of groups and determining reference images based on the plurality of groups. Each of the reference images may correspond to the at least one of the phases of the image data. The method may further include reconstructing an image sequence based on the reference images and the plurality of phases of the image data.

US Patent:

20230062908, Mar 2, 2023

Filed:

Sep 2, 2022

Appl. No.:

17/929679

Inventors:

- Shanghai, CN
Qi LIU - Houston TX, US
Jian XU - Houston TX, US
Jingyuan LYU - Houston TX, US
Yuan ZHENG - Houston TX, US

Assignee:

SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD. - Shanghai

International Classification:

A61B 5/055
G01R 33/563
A61B 5/00

Abstract:

The present disclosure may provide imaging methods, systems and storage media. The imaging methods may include: obtaining first imaging data acquired by an imaging device, wherein the first imaging data includes data corresponding to a plurality of cardiac cycles; and performing image reconstruction on data corresponding to the plurality of cardiac cycles in the first imaging data to acquire one or more cardiac cines. Each cardiac cine of the one or more cardiac cines may include cardiac images of a plurality of phases in at least one cardiac cycle.

US Patent:

20230000452, Jan 5, 2023

Filed:

Jun 30, 2021

Appl. No.:

17/305056

Inventors:

- Shanghai, CN
Jian XU - Houston TX, US
Qi LIU - Houston TX, US

Assignee:

SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD. - Shanghai

International Classification:

A61B 6/00
G06N 20/00
G06K 9/62

Abstract:

A method for SMS imaging may include obtaining target k-space data related to a region of interest (ROI) of an object. The method may also include generate, based on the target k-space data using a trained reconstruction model, a plurality of target images each of which corresponds to one of a plurality of target slices of the ROI at one of a plurality of target acquisition periods.

US Patent:

20210259568, Aug 26, 2021

Filed:

Feb 21, 2020

Appl. No.:

16/798265

Inventors:

- Houston TX, US
Qi LIU - Houston TX, US
Zhongqi ZHANG - Shanghai, CN
Jian XU - Houston TX, US

Assignee:

UIH America, Inc. - Houston TX

International Classification:

A61B 5/055
G01R 33/563
G01R 33/46
G01R 33/561

Abstract:

An imaging method may include obtaining imaging data associated with a region of interest (ROI) of an object. The imaging data may correspond to a plurality of time-series images of the ROI. The imaging method may also include determining, based on the imaging data, a data set including a spatial basis and one or more temporal bases. The spatial basis may include spatial information of the imaging data. The one or more temporal bases may include temporal information of the imaging data. The imaging method may also include storing, in a storage medium, the spatial basis and the one or more temporal bases.

US Patent:

20210263119, Aug 26, 2021

Filed:

Feb 24, 2020

Appl. No.:

16/798487

Inventors:

- Houston TX, US
Yu DING - Houston TX, US
Xiaomao GONG - Shanghai, CN
Qi LIU - Houston TX, US
Jian XU - Houston TX, US
Weiguo ZHANG - Houston TX, US

International Classification:

G01R 33/48
G01R 33/54

Abstract:

Systems and methods for generating an image of a subject using a magnetic resonance imaging (MRI) device may be provided. The method may include obtaining a radial sampling scheme including a plurality of radial lines that each pass through a center of k-space. The method may include selecting the plurality of radial lines of the radial sampling scheme. Each of the plurality of radial lines may be selected in a random and unrepeatable manner. The method may include acquiring k-space data along the selected radial lines. The method may include reconstructing at least one image of the subject based on the acquired k-space data.

US Patent:

20210116527, Apr 22, 2021

Filed:

Oct 21, 2019

Appl. No.:

16/658297

Inventors:

- Houston TX, US
Lele ZHAO - Shanghai, CN
Jian XU - Houston TX, US
Weiguo ZHANG - Houston TX, US

Assignee:

UIH AMERICA, INC. - Houston TX

International Classification:

G01R 33/483
A61B 5/055
G01R 33/561

Abstract:

The present disclosure provides a system for SMS MRI. During each of a plurality of frames, the system may cause an MRI scanner to apply a plurality of PE steps to each of a plurality of slice locations of a subject to acquire echo signals. A phase modulation magnetic field gradient may be applied during each of at least some of the PE steps in the frame. For each frame, the system may reconstruct an aliasing image representative of the slice locations in the frame based on the corresponding echo signals. The system may also generate a plurality of reference slice images based on the aliasing images. The system may further reconstruct at least one slice image based on the aliasing images and the reference slice images. Each of the slice image may be representative of one of the slice locations in one of the frames.