CN114545312A - 一种非线性梯度线圈及扫描方法 - Google Patents
一种非线性梯度线圈及扫描方法 Download PDFInfo
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- CN114545312A CN114545312A CN202210424169.4A CN202210424169A CN114545312A CN 114545312 A CN114545312 A CN 114545312A CN 202210424169 A CN202210424169 A CN 202210424169A CN 114545312 A CN114545312 A CN 114545312A
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- 238000000034 method Methods 0.000 title claims description 31
- 230000008859 change Effects 0.000 claims abstract description 7
- 238000005070 sampling Methods 0.000 claims description 9
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 238000004804 winding Methods 0.000 abstract description 4
- 238000003384 imaging method Methods 0.000 description 10
- 238000009826 distribution Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
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- 230000005672 electromagnetic field Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000002595 magnetic resonance imaging Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000007383 nerve stimulation Effects 0.000 description 2
- 210000000578 peripheral nerve Anatomy 0.000 description 2
- 238000012307 MRI technique Methods 0.000 description 1
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- 206010003119 arrhythmia Diseases 0.000 description 1
- 230000006793 arrhythmia Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002939 conjugate gradient method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
- G01R33/385—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/42—Screening
- G01R33/421—Screening of main or gradient magnetic field
- G01R33/4215—Screening of main or gradient magnetic field of the gradient magnetic field, e.g. using passive or active shielding of the gradient magnetic field
Abstract
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CN202210424169.4A CN114545312B (zh) | 2022-04-22 | 2022-04-22 | 一种非线性梯度线圈及扫描方法 |
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CN114545312A true CN114545312A (zh) | 2022-05-27 |
CN114545312B CN114545312B (zh) | 2022-09-09 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116794586A (zh) * | 2023-08-02 | 2023-09-22 | 宁波健信超导科技股份有限公司 | 一种梯度线圈线性度的测量方法及测量系统 |
EP4296702A1 (en) * | 2022-06-24 | 2023-12-27 | Bruker Switzerland AG | Split self-shielded gradient coil system, with power supply system for individually adjusting currents of sub-coil groups |
Citations (12)
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US6100692A (en) * | 1998-01-05 | 2000-08-08 | Picker International, Inc. | Gradient coil set with a finite shield current |
CN101191829A (zh) * | 2006-11-29 | 2008-06-04 | 北京万东医疗装备股份有限公司 | 平面有源屏蔽梯度线圈的制作方法 |
CN102028470A (zh) * | 2010-12-23 | 2011-04-27 | 上海辰光医疗科技有限公司 | 用于磁共振成像系统的眼球射频线圈装置 |
CN104011557A (zh) * | 2011-12-23 | 2014-08-27 | 皇家飞利浦有限公司 | 使用梯度线圈来校正mr成像中的高阶b0场不均匀性 |
CN104502872A (zh) * | 2015-01-15 | 2015-04-08 | 上海寰彤科教设备有限公司 | 磁共振成像用的自屏蔽梯度线圈系统 |
CN104992807A (zh) * | 2015-06-01 | 2015-10-21 | 中国科学院电工研究所 | 一种旋转梯度磁场的生成装置 |
CN105301536A (zh) * | 2015-11-05 | 2016-02-03 | 中国科学院电工研究所 | 一种磁共振成像系统的梯度磁场产生方法及其装置 |
CN107219480A (zh) * | 2017-05-05 | 2017-09-29 | 中国科学院电工研究所 | 磁共振成像系统的阵列梯度线圈 |
CN107407716A (zh) * | 2014-10-17 | 2017-11-28 | 皇家飞利浦有限公司 | 具有间隙和rf屏元件的z分段rf线圈 |
CN107847181A (zh) * | 2015-07-15 | 2018-03-27 | 圣纳普医疗(巴巴多斯)公司 | 用于偏移均匀磁场空间的有源线圈 |
CN109313244A (zh) * | 2016-06-16 | 2019-02-05 | 皇家飞利浦有限公司 | 具有集成的调制器和开关单元的磁场梯度线圈组件 |
CN113273990A (zh) * | 2020-02-19 | 2021-08-20 | 上海联影医疗科技股份有限公司 | 磁共振系统及其控制方法 |
-
2022
- 2022-04-22 CN CN202210424169.4A patent/CN114545312B/zh active Active
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6100692A (en) * | 1998-01-05 | 2000-08-08 | Picker International, Inc. | Gradient coil set with a finite shield current |
CN101191829A (zh) * | 2006-11-29 | 2008-06-04 | 北京万东医疗装备股份有限公司 | 平面有源屏蔽梯度线圈的制作方法 |
CN102028470A (zh) * | 2010-12-23 | 2011-04-27 | 上海辰光医疗科技有限公司 | 用于磁共振成像系统的眼球射频线圈装置 |
CN104011557A (zh) * | 2011-12-23 | 2014-08-27 | 皇家飞利浦有限公司 | 使用梯度线圈来校正mr成像中的高阶b0场不均匀性 |
CN107407716A (zh) * | 2014-10-17 | 2017-11-28 | 皇家飞利浦有限公司 | 具有间隙和rf屏元件的z分段rf线圈 |
CN104502872A (zh) * | 2015-01-15 | 2015-04-08 | 上海寰彤科教设备有限公司 | 磁共振成像用的自屏蔽梯度线圈系统 |
CN104992807A (zh) * | 2015-06-01 | 2015-10-21 | 中国科学院电工研究所 | 一种旋转梯度磁场的生成装置 |
CN107847181A (zh) * | 2015-07-15 | 2018-03-27 | 圣纳普医疗(巴巴多斯)公司 | 用于偏移均匀磁场空间的有源线圈 |
CN105301536A (zh) * | 2015-11-05 | 2016-02-03 | 中国科学院电工研究所 | 一种磁共振成像系统的梯度磁场产生方法及其装置 |
CN109313244A (zh) * | 2016-06-16 | 2019-02-05 | 皇家飞利浦有限公司 | 具有集成的调制器和开关单元的磁场梯度线圈组件 |
CN107219480A (zh) * | 2017-05-05 | 2017-09-29 | 中国科学院电工研究所 | 磁共振成像系统的阵列梯度线圈 |
CN113273990A (zh) * | 2020-02-19 | 2021-08-20 | 上海联影医疗科技股份有限公司 | 磁共振系统及其控制方法 |
Non-Patent Citations (5)
Title |
---|
GUOFA SHOU: "MRI Coil Design Using Boundary-Element Method With Regularization Technique: A Numerical Calculation Study", 《IEEE TRANSACTIONS ON MAGNETICS》 * |
HONG CHEN: "Error Analysis of Stochastic Gradient Descent Ranking", 《IEEE TRANSACTIONS ON CYBERNETICS》 * |
JIAEN LIU: "Gradient-based magnetic resonance electrical properties imaging of brain tissues", 《2014 36TH ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY》 * |
XIA LI: "Finite element analysis of gradient z-coil induced eddy currents in a permanent MRI magnet", 《JOURNAL OF MAGNETIC RESONANCE》 * |
徐斌: "非人灵长类动物超高场磁共振脑成像技术进展", 《中国生物医学工程学报》 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4296702A1 (en) * | 2022-06-24 | 2023-12-27 | Bruker Switzerland AG | Split self-shielded gradient coil system, with power supply system for individually adjusting currents of sub-coil groups |
CN116794586A (zh) * | 2023-08-02 | 2023-09-22 | 宁波健信超导科技股份有限公司 | 一种梯度线圈线性度的测量方法及测量系统 |
CN116794586B (zh) * | 2023-08-02 | 2023-11-21 | 宁波健信超导科技股份有限公司 | 一种梯度线圈线性度的测量方法及测量系统 |
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