公开(公告)号：US20230075638A1

公开(公告)日：2023-03-09

申请号：US17898251

申请日：2022-08-29

Applicant: GE Precision Healthcare LLC

Inventor： Yu Liu ,  Tingting Song ,  Kai Wang ,  Haoyang Xing ,  Jianye Ning ,  Xin Xie ,  Dongliang Yang ,  Chunlai Xiao

IPC: G01R33/54

Abstract: Provided in an embodiment of the present application are a magnetic resonance imaging system and a transmission apparatus and a transmission method. The method comprises: generating and outputting a pulse signal by a transmission controller; amplifying the pulse signal by a radio-frequency amplifier; transmitting, by a signal processor, the signal amplified by the radio-frequency amplifier to a transmit coil of the magnetic resonance imaging system; and generating frequency offset lookup information for bandwidth compensation of the entire transmission apparatus according to bandwidth data of the transmission controller, the radio-frequency amplifier, and the signal processor; wherein the frequency offset lookup information is used to control the transmission controller to generate output power. Thus, the method can use the frequency offset lookup information to perform digital pre-distortion processing of a power amplifier, and can also improve the bandwidth performance of the entire transmission apparatus and improve the quality of magnetic resonance images.

公开(公告)号：US20220365152A1

公开(公告)日：2022-11-17

申请号：US17731002

申请日：2022-04-27

Applicant: GE Precision Healthcare LLC

Inventor： Yu Liu ,  Xin Xie ,  Tingting Song ,  Kai Wang ,  Haoyang Xing ,  Dongliang Yang ,  Chunlai Xiao ,  Jianye Ning

IPC: G01R33/36

Abstract: Embodiments of the present application provide a magnetic resonance system and a transmission apparatus, a transmission method, and a pre-scanning method. The apparatus includes: a signal output unit used to generate and output a pulse signal; a radio-frequency amplifier used to amplify the pulse signal; a signal processing unit used to transmit, to a transmit coil of the magnetic resonance system, the signal amplified by the radio-frequency amplifier, receive and adjust a phase of the feedback signal, and output the phase-adjusted feedback signal to the signal output unit; and a determination unit used to acquire amplitude values of the feedback signal at different phases, and determine a forward power and/or a reverse power according to the amplitude values of the feedback signal at the different phases.

公开(公告)号：US11515844B2

公开(公告)日：2022-11-29

申请号：US17221225

申请日：2021-04-02

Applicant: GE Precision Healthcare LLC

Inventor： Yu Liu ,  Xin Xie ,  Hong Gu ,  Zhaoyi Zhou ,  Kai Wang ,  Haoyang Xing ,  Xianchao Wu ,  Dongliang Yang ,  Chunlai Xiao ,  Tingting Song ,  Jianye Ning

IPC: H03F1/30 ,  G01R33/36 ,  H03F3/19

Abstract: Provided in the present invention are a linear compensation method for a radio frequency amplifier and a magnetic resonance imaging system. The linear compensation method for a radio frequency amplifier includes determining a working voltage of the radio frequency amplifier, determining a corresponding linear compensation value based on the working voltage, and performing linear compensation on the radio frequency amplifier based on the linear compensation value.

公开(公告)号：US20210396822A1

公开(公告)日：2021-12-23

申请号：US17304346

申请日：2021-06-18

Applicant: GE Precision Healthcare LLC

Inventor： Haoyang Xing ,  Haotian Jiang ,  Xuelian Lu ,  Sheng Tong ,  Yu Liu ,  Hai Huang

IPC: G01R33/36

Abstract: Provided in the present invention are a power control apparatus for a radio-frequency power amplifier and a radio-frequency transmission system for a magnetic resonance imaging system. The power control apparatus comprises: a power control module used to receive a control voltage so as to control an output power of the radio-frequency power amplifier; a voltage detection module used to detect an operating voltage provided to the radio-frequency power amplifier and to output a detected voltage; and a voltage adjustment module used to adjust, on the basis of the detected voltage, the control voltage received by the power control module so as to adjust the output power of the radio-frequency power amplifier.

公开(公告)号：US11662404B2

公开(公告)日：2023-05-30

申请号：US17731002

申请日：2022-04-27

Applicant: GE Precision Healthcare LLC

Inventor： Yu Liu ,  Xin Xie ,  Tingting Song ,  Kai Wang ,  Haoyang Xing ,  Dongliang Yang ,  Chunlai Xiao ,  Jianye Ning

IPC: G01R33/36

CPC classification number: G01R33/3607 ,  G01R33/3614

Abstract: Embodiments of the present application provide a magnetic resonance system and a transmission apparatus, a transmission method, and a pre-scanning method. The apparatus includes: a signal output unit used to generate and output a pulse signal; a radio-frequency amplifier used to amplify the pulse signal; a signal processing unit used to transmit, to a transmit coil of the magnetic resonance system, the signal amplified by the radio-frequency amplifier, receive and adjust a phase of the feedback signal, and output the phase-adjusted feedback signal to the signal output unit; and a determination unit used to acquire amplitude values of the feedback signal at different phases, and determine a forward power and/or a reverse power according to the amplitude values of the feedback signal at the different phases.

公开(公告)号：US11513177B2

公开(公告)日：2022-11-29

申请号：US17304356

申请日：2021-06-18

Applicant: GE Precision Healthcare LLC

Inventor： Sheng Tong ,  Yue Shang ,  Haoyang Xing ,  Zhuoyu Chen ,  Liya Ma

IPC: G01R33/42 ,  G01R33/36 ,  G01R33/422

Abstract: An embodiment of the present utility model relates to a balun assembly, including: an outer conductive tube body disposed around an electrical cable, the outer conductive tube body including a first portion and a second portion detachably connected to each other; a conductive connection member electrically connecting the outer conductive tube body to the electrical cable; and an insulative material disposed between the outer conductive tube body and the electrical cable. An embodiment of the present utility model further relates to a magnetic resonance device including the balun assembly.

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：US12044761B2

公开(公告)日：2024-07-23

申请号：US17898251

申请日：2022-08-29

Applicant: GE Precision Healthcare LLC

Inventor： Yu Liu ,  Tingting Song ,  Kai Wang ,  Haoyang Xing ,  Jianye Ning ,  Xin Xie ,  Dongliang Yang ,  Chunlai Xiao

IPC: G01V3/00 ,  G01R33/54

CPC classification number: G01R33/543

Abstract: Provided in an embodiment of the present application are a magnetic resonance imaging system and a transmission apparatus and a transmission method. The method comprises: generating and outputting a pulse signal by a transmission controller; amplifying the pulse signal by a radio-frequency amplifier; transmitting, by a signal processor, the signal amplified by the radio-frequency amplifier to a transmit coil of the magnetic resonance imaging system; and generating frequency offset lookup information for bandwidth compensation of the entire transmission apparatus according to bandwidth data of the transmission controller, the radio-frequency amplifier, and the signal processor; wherein the frequency offset lookup information is used to control the transmission controller to generate output power. Thus, the method can use the frequency offset lookup information to perform digital pre-distortion processing of a power amplifier, and can also improve the bandwidth performance of the entire transmission apparatus and improve the quality of magnetic resonance images.

公开(公告)号：US11500047B2

公开(公告)日：2022-11-15

申请号：US17304346

申请日：2021-06-18

Applicant: GE Precision Healthcare LLC

Inventor： Haoyang Xing ,  Haotian Jiang ,  Xuelian Lu ,  Sheng Tong ,  Yu Liu ,  Hai Huang

IPC: G01R33/36

Abstract: Provided in the present invention are a power control apparatus for a radio-frequency power amplifier and a radio-frequency transmission system for a magnetic resonance imaging system. The power control apparatus comprises: a power control module used to receive a control voltage so as to control an output power of the radio-frequency power amplifier; a voltage detection module used to detect an operating voltage provided to the radio-frequency power amplifier and to output a detected voltage; and a voltage adjustment module used to adjust, on the basis of the detected voltage, the control voltage received by the power control module so as to adjust the output power of the radio-frequency power amplifier.

公开(公告)号：US11249155B2

公开(公告)日：2022-02-15

申请号：US16928139

申请日：2020-07-14

Applicant: GE Precision Healthcare LLC

Inventor： Yu Liu ,  Tingting Song ,  Haoyang Xing ,  Xin Xie ,  Dongliang Yang ,  Chunlai Xiao ,  Xianchao Wu

IPC: G01R33/36

Abstract: The present invention relates to an RF transmit system and method, MRI system and a pre-scan method and medium thereof. The RF transmit system comprises: an RF output unit, for generating and outputting an RF pulse signal; an RF amplifier, for amplifying the RF pulse signal; and a signal processing unit, for communicating the amplified RF pulse signal to an RF transmit coil of the MRI system and outputting a feedback signal to the RF output unit, wherein the RF output unit generates a linearity compensation control signal based on the feedback signal and a predetermined feedback signal-linearity compensation value-relationship, so as to carry out linearity compensation for the RF pulse signal outputted by the RF output unit. The RF transmit method corresponds to the above noted system and the MRI system comprises the above noted RF transmit system. The pre-scan method comprises the RF transmit method. Instructions recorded by the medium may execute the above noted RF transmit method and pre-scan method.