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公开(公告)号：US20190195972A1
公开(公告)日：2019-06-27
申请号：US16261610
申请日：2019-01-30
Applicant: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY
Inventor： Ye Li , Qiaoyan Chen , Rou Li , Chao Luo , Jianhong Wen , Chao Zou , Xin Liu
CPC classification number: G01R33/3875 , A61B5/055 , A61B17/320068 , A61B2017/320069 , G01R33/443 , G01R33/4814 , G01R33/543
Abstract: A local shimming system for magnetic resonance imaging and the method thereof, wherein the shimming method comprises the following steps: collecting B0 field map information using two-dimensional gradient echo (301); calculating and evaluating the homogeneity of B0 (302); optimizing the current of each channel shim coil (303); determining whether the minimum standard deviation value of Δf is obtained (304); outputting an optimal current combination values and setting an optimum current value corresponding to each channel of the shim coil on the current control software (305); and testing and evaluating the homogeneity of B0 to achieve the shimming goal (306).
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公开(公告)号：US12092714B2
公开(公告)日：2024-09-17
申请号：US17992868
申请日：2022-11-22
Inventor： Hairong Zheng , Qiaoyan Chen , Ye Li , Chao Luo , Xin Liu
IPC: G01R33/3875 , A61B5/055
CPC classification number: G01R33/3875 , A61B5/055
Abstract: A shimming method and device, an electronic device, and a storage medium are disclosed. The shimming method includes: obtaining object static magnetic field distribution information corresponding to a target object, the object static magnetic field distribution information including the static magnetic field distribution information of the target object under the action of a main magnet of a magnetic resonance system; determining a target static magnetic field based on the object static magnetic field distribution information and a preset shim coil magnetic field distribution model; and adjusting at least one shim coil parameter in the shim coil magnetic field distribution model until a magnetic field uniformity of the target static magnetic field satisfies a preset condition, and accordingly obtaining at least one target shim coil parameter.
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公开(公告)号：US20230204697A1
公开(公告)日：2023-06-29
申请号：US17921465
申请日：2020-07-23
Applicant: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY
Inventor： Ye Li , Feng DU , Nan Li , Xing Yang , Qiaoyan Chen , Xin Liu , Hairong Zheng
IPC: G01R33/36 , G01R33/3415
CPC classification number: G01R33/3635 , G01R33/3415
Abstract: Provided is a quad-core radio-frequency coil circuit. The quad-core radio-frequency coil circuit includes a coil module (1) and a front-end module (2). The coil module (1) is configured to receive a nuclear magnetic test signal and, according to the nuclear magnetic test signal, generate an induction signal. The front-end module (2) is connected to the coil module (1) and configured to generate the nuclear magnetic test signal and collect the induction signal.
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Patent Agency Ranking
公开(公告)号：US11378636B2
公开(公告)日：2022-07-05
申请号：US17032588
申请日：2020-09-25
Applicant: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY
Inventor： Ye Li , Qiaoyan Chen , Jo Lee , Chao Luo , Jianhong Wen , Chao Zou , Xin Liu
Abstract: A shimming system for magnetic resonance imaging is provided, which includes: a multi-channel local shim coil unit configured to be installed on an inspection table of a magnetic resonance imaging system, where the multi-channel local shim coil unit includes a local multi-channel shim coil and a radio frequency receiving coil for receiving magnetic resonance signals, and the radio frequency receiving coil is placed inside the local multi-channel shim coil and separated by a distance from the local multi-channel shim coil; a computer control system configured to install and set software controlled by a DC power and calculate field maps and calculate optimization processes; a DC power system communicatively connected to the computer control system to control a value of current of each channel; and a housing having a semi-cylindrical configuration, where the local multi-channel shim coil is only distributed on a semi-cylindrical surface of the semi-cylindrical configuration of the housing.
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公开(公告)号：US10884080B2
公开(公告)日：2021-01-05
申请号：US16348917
申请日：2018-10-26
Applicant: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY
Inventor： Hairong Zheng , Ye Li , Qiaoyan Chen , Feng Du , Nan Li , Jo Lee , Chao Luo , Qiang He , Xin Liu
Abstract: A dual-nuclear radio frequency (RF) coil device includes a first RF coil and a second RF coil. The first RF coil includes at least one adjustment capacitor, the first RF coil is configured to generate a first magnetic field, and a direction of a primary magnetic field of the first magnetic field is a first direction. The second RF coil includes an electric dipole and a tuning and matching circuit connected between two conductors of the electric dipole. The second RF coil is configured to generate a second magnetic field and a direction of a primary magnetic field of the second magnetic field is a second direction; the electric dipole is disposed in a center line of the first RF coil and an insulating layer is disposed between the electric dipole and the first RF coil; and the first direction is perpendicular to the second direction.
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公开(公告)号：US12276713B2
公开(公告)日：2025-04-15
申请号：US17921465
申请日：2020-07-23
Applicant: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY
Inventor： Ye Li , Feng Du , Nan Li , Xing Yang , Qiaoyan Chen , Xin Liu , Hairong Zheng
IPC: G01R33/36 , G01R33/3415
Abstract: Provided is a quad-core radio-frequency coil circuit. The quad-core radio-frequency coil circuit includes a coil module (1) and a front-end module (2). The coil module (1) is configured to receive a nuclear magnetic test signal and, according to the nuclear magnetic test signal, generate an induction signal. The front-end module (2) is connected to the coil module (1) and configured to generate the nuclear magnetic test signal and collect the induction signal.
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公开(公告)号：US10969449B2
公开(公告)日：2021-04-06
申请号：US16261610
申请日：2019-01-30
Applicant: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY
Inventor： Ye Li , Qiaoyan Chen , Jo Lee , Chao Luo , Jianhong Wen , Chao Zou , Xin Liu
Abstract: A local shimming system for magnetic resonance imaging and the method thereof, wherein the shimming method comprises the following steps: collecting B0 field map information using two-dimensional gradient echo (301); calculating and evaluating the homogeneity of B0 (302); optimizing the current of each channel shim coil (303); determining whether the minimum standard deviation value of Δf is obtained (304); outputting an optimal current combination values and setting an optimum current value corresponding to each channel of the shim coil on the current control software (305); and testing and evaluating the homogeneity of B0 to achieve the shimming goal (306).
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公开(公告)号：US20200300946A1
公开(公告)日：2020-09-24
申请号：US16348917
申请日：2018-10-26
Applicant: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY
Inventor： Hairong Zheng , Li Ye , Qiaoyan Chen , Feng Du , Nan Li , Jo Lee , Chao Luo , Qiang He , Xin Liu
Abstract: A dual-nuclear radio frequency (RF) coil device includes a first RF coil and a second RF coil. The first RF coil includes at least one adjustment capacitor, the first RF coil is configured to generate a first magnetic field, and a direction of a primary magnetic field of the first magnetic field is a first direction. The second RF coil includes an electric dipole and a tuning and matching circuit connected between two conductors of the electric dipole. The second RF coil is configured to generate a second magnetic field and a direction of a primary magnetic field of the second magnetic field is a second direction; the electric dipole is disposed in a center line of the first RF coil and an insulating layer is disposed between the electric dipole and the first RF coil; and the first direction is perpendicular to the second direction.
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