公开(公告)号：US10859659B2

公开(公告)日：2020-12-08

申请号：US16174366

申请日：2018-10-30

Applicant: GE Precision Healthcare LLC

Inventor： Weinan Tang ,  Longqing Wang ,  Qingyu Dai ,  Dan Wu ,  Haoyang Xing

IPC: G01R33/565 ,  G01R33/56 ,  G01R33/567

Abstract: Embodiments of the present invention provide a motion monitoring method during MR imaging, comprising: acquiring a noise of a receiving coil before or after each imaging repetition time of an imaging scanning sequence; determining main coil channels associated with a motion of a scanned object in the receiving coil; determining a sum of squares of amplitudes of noises of the respective main coil channels; and filtering the sum of squares of amplitudes of noises of the main coil channels to obtain a motion track of the scanned object.

公开(公告)号：US20210123993A1

公开(公告)日：2021-04-29

申请号：US17065058

申请日：2020-10-07

Applicant: GE Precision Healthcare LLC

Inventor： Longqing Wang ,  Weinan Tang ,  Kun Wang ,  Hongbin Wang ,  Yongchuan Lai ,  Jiabin Yao

IPC: G01R33/24 ,  G01R33/54 ,  G01R33/483

Abstract: Embodiments of the present invention provide a magnetic resonance imaging method and system and a computer-readable storage medium. The method comprises: performing pre-scanning, wherein a first sequence and a second sequence are separately performed on a plurality of slices; in the first sequence, two echoes are continuously obtained to respectively obtain first image data and second image data having a first phase offset; in the second sequence, two echoes are continuously obtained to respectively obtain third image data and fourth image data having a second phase offset, the first phase offset and the second phase offset having opposite directions but the same angle; obtaining a plurality of radio-frequency field maps respectively corresponding to the plurality of slices based on the first image data and the second image data, and obtaining a plurality of static magnetic field maps respectively corresponding to the plurality of slices based on at least one of the following two groups: a first image and a third image, and a second image and a fourth image; and calculating formal scanning parameters suitable for a corresponding slice based on at least one of the following two components: each radio-frequency field map, and a corresponding static magnetic field map.

公开(公告)号：US11287493B2

公开(公告)日：2022-03-29

申请号：US17065058

申请日：2020-10-07

Applicant: GE Precision Healthcare LLC

Inventor： Longqing Wang ,  Weinan Tang ,  Kun Wang ,  Hongbin Wang ,  Yongchuan Lai ,  Jiabin Yao

IPC: G01V3/00 ,  G01R33/24 ,  G01R33/483 ,  G01R33/54

Abstract: Embodiments of the present invention provide a magnetic resonance imaging method and system and a computer-readable storage medium. The method comprises: performing pre-scanning, wherein a first sequence and a second sequence are separately performed on a plurality of slices; in the first sequence, two echoes are continuously obtained to respectively obtain first image data and second image data having a first phase offset; in the second sequence, two echoes are continuously obtained to respectively obtain third image data and fourth image data having a second phase offset, the first phase offset and the second phase offset having opposite directions but the same angle; obtaining a plurality of radio-frequency field maps respectively corresponding to the plurality of slices based on the first image data and the second image data, and obtaining a plurality of static magnetic field maps respectively corresponding to the plurality of slices based on at least one of the following two groups: a first image and a third image, and a second image and a fourth image; and calculating formal scanning parameters suitable for a corresponding slice based on at least one of the following two components: each radio-frequency field map, and a corresponding static magnetic field map.

公开(公告)号：US11107211B2

公开(公告)日：2021-08-31

申请号：US15930884

申请日：2020-05-13

Applicant: GE Precision Healthcare LLC

Inventor： Dan Wu ,  Kun Wang ,  Weinan Tang ,  Longqing Wang

IPC: G06T7/00 ,  G06T7/80

Abstract: The present application provides a medical imaging method and system and a non-transitory computer-readable storage medium. The medical imaging method comprises identifying an image quality type of a medical image based on a trained learning network, and generating, based on the identified image quality type, a corresponding control signal for controlling a medical imaging system.

公开(公告)号：US10782372B2

公开(公告)日：2020-09-22

申请号：US15720724

申请日：2017-09-29

Applicant: GE Precision Healthcare LLC

Inventor： Qingyu Dai ,  Haoyang Xing ,  Yu Liu ,  Chun Lai Xiao ,  Sheng Tong ,  Weinan Tang

IPC: G01R33/422 ,  G01R33/36 ,  G01R33/3415 ,  A61B5/055 ,  G01R33/385 ,  G01R33/56 ,  G01R33/34

Abstract: A magnetic resonance imaging (MRI) system radio frequency (RF) subsystem and a coil decoupling apparatus and method used therein. The MRI system RF subsystem comprises a body coil and a surface coil for receiving MR signals, and also comprises a preamplifier for amplifying the MR signals received by the body coil; the coil decoupling apparatus comprises a phase shifter, which is connected between the preamplifier and the body coil, and used for receiving an external voltage regulation signal to regulate an operation voltage thereof, wherein the voltage regulation signal is determined according to a current patient's weight.