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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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2.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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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：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
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.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20230337933A1
公开(公告)日：2023-10-26
申请号：US18194862
申请日：2023-04-03
Applicant: GE Precision Healthcare LLC
Inventor： Jianye Ning , Xin Xie , Yu Liu , Chunlai Xiao , Sheng Tong , Dongliang Yang , Kai Wang
Abstract: An impedance tuner in a magnetic resonance system include at least one of an amplitude tuning circuit and a phase tuning circuit. The amplitude tuning circuit includes M serially-connected amplitude tuners. Each amplitude tuner includes at least one microwave transmission line and a first switch circuit connected in parallel, wherein the first switch circuit controls the at least one microwave transmission line to be in an on state or an off state, respectively, and the value of M is a positive integer greater than or equal to 1. The phase tuning circuit includes a phase tuner, and the phase tuner includes P second microwave transmission lines and a second switch circuit, wherein the second switch circuit controls the P second microwave transmission lines to be in an on state or an off state, respectively, and the value of P is a positive integer greater than or equal to 2.
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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.
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8.发明申请公开(公告)号：US20250085368A1
公开(公告)日：2025-03-13
申请号：US18882443
申请日：2024-09-11
Applicant: GE Precision Healthcare LLC
Inventor： Hong Gu , Haiyuan Sun , Yue Ma , Yalu Wu , Chunlai Xiao
IPC: G01R33/36 , G01R33/385 , H01F27/28 , H02M1/00 , H02M7/48
Abstract: An isolated resonant power supply circuit, a magnetic resonance imaging system, and an air-cored transformer is provided. The isolated resonant power supply circuit is disposed within a scan room of a magnetic resonance imaging system. The isolated resonant power supply circuit includes: an inverter circuit, a resonant transformer circuit, and a rectifier circuit. The inverter circuit is connected to the resonant transformer circuit and is used for converting inputted direct current power into alternating current power and outputting the same to the resonant transformer circuit. The resonant transformer circuit is used for performing resonant conversion and transformation on the alternating current power, and then output the same to the rectifier circuit. The rectifier circuit is used for rectifying an alternating current output voltage outputted by the resonant transformer circuit into a direct current voltage for output, so as to supply power. The resonant transformer circuit comprises a variable capacitance circuit and an inductor, and by changing an input voltage of the variable capacitance circuit, an equivalent capacitance value of the variable capacitance circuit is caused to change.
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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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