CN1742674A - 一种磁共振成像系统中减小梯度线圈涡流的方法 - Google Patents
一种磁共振成像系统中减小梯度线圈涡流的方法 Download PDFInfo
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- CN1742674A CN1742674A CN 200510029810 CN200510029810A CN1742674A CN 1742674 A CN1742674 A CN 1742674A CN 200510029810 CN200510029810 CN 200510029810 CN 200510029810 A CN200510029810 A CN 200510029810A CN 1742674 A CN1742674 A CN 1742674A
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- gradient coil
- coil
- gradient
- eddy current
- eddy
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Abstract
Description
Ri | 单位:m |
R1 | 0.1092 |
R2 | 0.2958 |
R3 | 0.3008 |
R4 | 0.3057 |
R5 | 0.3107 |
R6 | 0.3156 |
R7 | 0.3206 |
R8 | 0.3255 |
R9 | 0.3305 |
R10 | 0.3354 |
R11 | 0.3404 |
R12 | 0.3453 |
原Z梯度线圈引起的涡流 | 半径缩减以后的Z梯度线圈引起的涡流 | |||
Delay(sec) | Offset(Hz)Z(+4cm) | Offset(Hz)Z(-4cm) | Offset(Hz)Z(+4cm) | Offset(Hz)Z(-4cm) |
0.0005 | 212 | -280 | 48 | -79 |
0.001 | 202 | -266 | 48 | -78 |
0.003 | 177 | -236 | 47 | -75 |
0.005 | 163 | -211 | 45 | -67 |
0.008 | 145 | -188 | 43 | -60 |
0.010 | 133 | -176 | 39 | -58 |
0.015 | 113 | -148 | 36 | -53 |
0.020 | 97 | -129 | 33 | -49 |
0.050 | 46 | -64 | 12 | -34 |
0.080 | 31 | -41 | -1 | -12 |
0.1 | 20 | -29 | -1 | -8 |
0.15 | 12 | -16 | 0 | -6 |
0.20 | 5 | -11 | 0 | -6 |
0.25 | 1 | -5 | 0 | -4 |
0.30 | 1 | -2 | 0 | -1 |
Claims (1)
Priority Applications (1)
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CNB2005100298100A CN100339050C (zh) | 2005-09-20 | 2005-09-20 | 一种磁共振成像系统中减小梯度线圈涡流的方法 |
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CNB2005100298100A CN100339050C (zh) | 2005-09-20 | 2005-09-20 | 一种磁共振成像系统中减小梯度线圈涡流的方法 |
Publications (2)
Publication Number | Publication Date |
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CN1742674A true CN1742674A (zh) | 2006-03-08 |
CN100339050C CN100339050C (zh) | 2007-09-26 |
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CNB2005100298100A Expired - Fee Related CN100339050C (zh) | 2005-09-20 | 2005-09-20 | 一种磁共振成像系统中减小梯度线圈涡流的方法 |
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CN (1) | CN100339050C (zh) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103852740A (zh) * | 2012-11-30 | 2014-06-11 | 通用电气公司 | 降低涡电流磁场的系统和方法 |
CN104614694A (zh) * | 2015-01-27 | 2015-05-13 | 华东师范大学 | 一种磁共振梯度涡流补偿方法 |
CN106291422A (zh) * | 2016-09-29 | 2017-01-04 | 中国科学院苏州生物医学工程技术研究所 | 一种磁共振成像系统及其参数确定方法 |
CN104198968B (zh) * | 2014-08-11 | 2017-03-22 | 河海大学 | 一种横向梯度线圈及其制作方法 |
CN112881959A (zh) * | 2020-06-10 | 2021-06-01 | 苏州纽迈分析仪器股份有限公司 | 一种用于磁共振成像的梯度涡流补偿方法及系统 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI105293B (fi) * | 1993-06-08 | 2000-07-14 | Picker Nordstar Oy | Magneettikuvaukseen käytettävän magneetin napakenkä |
JP3505294B2 (ja) * | 1995-03-28 | 2004-03-08 | ジーイー横河メディカルシステム株式会社 | Mri装置 |
JP3967505B2 (ja) * | 1999-12-07 | 2007-08-29 | 日本電子株式会社 | 磁場補正コイルの設計方法 |
CN1427267A (zh) * | 2001-12-21 | 2003-07-02 | 中国科学院电工研究所 | 磁共振成像的方法和装置 |
-
2005
- 2005-09-20 CN CNB2005100298100A patent/CN100339050C/zh not_active Expired - Fee Related
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103852740A (zh) * | 2012-11-30 | 2014-06-11 | 通用电气公司 | 降低涡电流磁场的系统和方法 |
CN103852740B (zh) * | 2012-11-30 | 2016-12-07 | 通用电气公司 | 降低涡电流磁场的系统和方法 |
CN104198968B (zh) * | 2014-08-11 | 2017-03-22 | 河海大学 | 一种横向梯度线圈及其制作方法 |
CN104614694A (zh) * | 2015-01-27 | 2015-05-13 | 华东师范大学 | 一种磁共振梯度涡流补偿方法 |
CN106291422A (zh) * | 2016-09-29 | 2017-01-04 | 中国科学院苏州生物医学工程技术研究所 | 一种磁共振成像系统及其参数确定方法 |
CN112881959A (zh) * | 2020-06-10 | 2021-06-01 | 苏州纽迈分析仪器股份有限公司 | 一种用于磁共振成像的梯度涡流补偿方法及系统 |
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Publication number | Publication date |
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CN100339050C (zh) | 2007-09-26 |
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Assignee: Jiangsu Lettall Electronic Co., Ltd. Assignor: East China Normal University Contract fulfillment period: 2008.12.15 to 2013.12.14 contract change Contract record no.: 2009320001289 Denomination of invention: Method for reducing gradient coil vortex in magnetic resonance imaging system Granted publication date: 20070926 License type: Exclusive license Record date: 2009.7.29 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.12.15 TO 2013.12.14; CHANGE OF CONTRACT Name of requester: JIANGSU LETTALL ELECTRONICS CO., LTD. Effective date: 20090729 |
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