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公开(公告)号：US20240319300A1
公开(公告)日：2024-09-26
申请号：US18613597
申请日：2024-03-22
Applicant: GE Precision Healthcare LLC
Inventor： Yanfang Cai , Xin Xie , Chunlai Xiao , Yu Liu , Kai Wang
IPC: G01R33/36
CPC classification number: G01R33/3607 , G01R33/3614
Abstract: A magnetic resonance system, a transmission apparatus, and a transmission method is provided. The transmission method includes: generating and outputting a pulse signal by a signal output unit, amplifying the pulse signal by a radio-frequency power amplifier, and transferring, by an impedance matching circuit, the signal amplified by the radio-frequency power amplifier to a transmit coil of the magnetic resonance system; and determining a first phase among a plurality of adjustable phases that enables a performance indicator of the radio-frequency power amplifier to meet a first condition, and adjusting an output impedance of the impedance matching circuit at least according to the first phase.
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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
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.
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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.
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公开(公告)号：US20240019511A1
公开(公告)日：2024-01-18
申请号：US18349806
申请日：2023-07-10
Applicant: GE Precision Healthcare LLC
Inventor： Yu Liu , Xin Xie , Kai Wang , Tingting Song , Chunlai Xiao , Dongliang Yang , Jianye Ning
CPC classification number: G01R33/3403 , H05K7/2089 , G01K1/026 , G01K3/06
Abstract: A radio-frequency power output device includes a cooling plate, a temperature detection module, and a control module. The cooling plate is provided with a first circuit board and a second circuit board respectively on two opposite sides thereof, and the first circuit board and the second circuit board are provided with a first radio-frequency power amplification circuit and a second radio-frequency power amplification circuit, respectively. The temperature detection module is used to obtain the temperature of the first circuit board and the temperature of the second circuit board. The control module controls, based on the temperature of the first circuit board, the first radio-frequency power amplification circuit to output a radio-frequency power signal at a target temperature, and controls, based on the temperature of the second circuit board, the second radio-frequency power amplification circuit to output a radio-frequency power signal at the target temperature.
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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.
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Patent Agency Ranking
6.发明申请公开(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.
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公开(公告)号：US12287384B2
公开(公告)日：2025-04-29
申请号：US18349806
申请日：2023-07-10
Applicant: GE Precision Healthcare LLC
Inventor： Yu Liu , Xin Xie , Kai Wang , Tingting Song , Chunlai Xiao , Dongliang Yang , Jianye Ning
Abstract: A radio-frequency power output device includes a cooling plate, a temperature detection module, and a control module. The cooling plate is provided with a first circuit board and a second circuit board respectively on two opposite sides thereof, and the first circuit board and the second circuit board are provided with a first radio-frequency power amplification circuit and a second radio-frequency power amplification circuit, respectively. The temperature detection module is used to obtain the temperature of the first circuit board and the temperature of the second circuit board. The control module controls, based on the temperature of the first circuit board, the first radio-frequency power amplification circuit to output a radio-frequency power signal at a target temperature, and controls, based on the temperature of the second circuit board, the second radio-frequency power amplification circuit to output a radio-frequency power signal at the target temperature.
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公开(公告)号：US20240125875A1
公开(公告)日：2024-04-18
申请号：US18485275
申请日：2023-10-11
Applicant: GE Precision Healthcare LLC
Inventor： Zhenen Cao , Yu Liu , Tao Ma
CPC classification number: G01R33/36 , G01R33/543 , H02M3/01 , H02M3/33569
Abstract: Embodiments of the present invention disclose a magnetic resonance system and a power supply device for the magnetic resonance system, the device including: a DC power source; a full-bridge circuit coupled to the DC power source and having a first bridge arm and a second bridge arm, the full-bridge circuit being used to output a periodic voltage signal through the first bridge arm and the second bridge arm; a resonant circuit, having a symmetrical circuit structure, two symmetric input terminals thereof being connected to the first bridge arm and the second bridge arm, respectively, so as to receive the periodic voltage signal; and a boost circuit, connected to two symmetric output terminals of the resonant circuit so as to receive the periodic voltage signal modulated by the resonant circuit, the boost circuit being used to provide a boosted voltage, and the boosted voltage having an amplitude greater than the amplitude of the periodic voltage signal.
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9.发明授权公开(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.
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10.发明公开公开(公告)号：US20240361406A1
公开(公告)日：2024-10-31
申请号：US18643885
申请日：2024-04-23
Applicant: GE Precision Healthcare LLC
Inventor： Xin Xie , Dongliang Yang , Yu Liu , Yanfang Cai , Ning Zhang , Chaoya Zhao , Alen Wang
CPC classification number: G01R33/3614 , G01R33/543
Abstract: A radio-frequency power amplification module for a magnetic resonance system and an imaging method are provided. The radio-frequency power amplification module includes: a power synthesizer, a main amplifier, and an auxiliary amplifier, output ends of the main amplifier and the auxiliary amplifier being both connected to a power synthesis unit; and a controller. The controller is configured to output a control signal according to a required radio-frequency transmission parameter or a scan parameter corresponding to the radio-frequency transmission parameter, so as to adjust a control parameter of the auxiliary amplifier. The radio-frequency power amplification module has high efficiency.
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