JP3731135B2 - 磁気共鳴イメージング装置 - Google Patents
磁気共鳴イメージング装置 Download PDFInfo
- Publication number
- JP3731135B2 JP3731135B2 JP02882399A JP2882399A JP3731135B2 JP 3731135 B2 JP3731135 B2 JP 3731135B2 JP 02882399 A JP02882399 A JP 02882399A JP 2882399 A JP2882399 A JP 2882399A JP 3731135 B2 JP3731135 B2 JP 3731135B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- gradient
- signal
- generating means
- magnetic resonance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000002595 magnetic resonance imaging Methods 0.000 title claims description 18
- 230000003068 static effect Effects 0.000 claims description 56
- 238000001228 spectrum Methods 0.000 claims description 37
- 239000000126 substance Substances 0.000 claims description 31
- 238000003384 imaging method Methods 0.000 claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 7
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 description 29
- 238000005259 measurement Methods 0.000 description 28
- 230000008569 process Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 238000000701 chemical imaging Methods 0.000 description 6
- 230000005284 excitation Effects 0.000 description 5
- 230000003993 interaction Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 239000000523 sample Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000264 spin echo pulse sequence Methods 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000002592 echocardiography Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000004611 spectroscopical analysis Methods 0.000 description 2
- 108010076504 Protein Sorting Signals Proteins 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Images
Classifications
-
- 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
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- High Energy & Nuclear Physics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02882399A JP3731135B2 (ja) | 1999-02-05 | 1999-02-05 | 磁気共鳴イメージング装置 |
| US09/497,682 US6489770B1 (en) | 1999-02-05 | 2000-02-04 | Nuclear magnetic resonance imaging apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02882399A JP3731135B2 (ja) | 1999-02-05 | 1999-02-05 | 磁気共鳴イメージング装置 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2000225105A JP2000225105A (ja) | 2000-08-15 |
| JP2000225105A5 JP2000225105A5 (enExample) | 2005-04-21 |
| JP3731135B2 true JP3731135B2 (ja) | 2006-01-05 |
Family
ID=12259129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02882399A Expired - Fee Related JP3731135B2 (ja) | 1999-02-05 | 1999-02-05 | 磁気共鳴イメージング装置 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US6489770B1 (enExample) |
| JP (1) | JP3731135B2 (enExample) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3866537B2 (ja) * | 2001-06-28 | 2007-01-10 | ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー | 磁気共鳴撮影装置 |
| JP2004159984A (ja) * | 2002-11-14 | 2004-06-10 | Ge Medical Systems Global Technology Co Llc | 静磁場形成装置および磁気共鳴撮像装置 |
| JP4961116B2 (ja) * | 2005-06-15 | 2012-06-27 | 株式会社日立メディコ | 磁気共鳴撮影装置 |
| ATE439802T1 (de) * | 2005-09-07 | 2009-09-15 | Koninkl Philips Electronics Nv | System und verfahren zum induktiven messen der bioimpedanz eines leitfähigen gewebes |
| JP5072250B2 (ja) * | 2006-04-04 | 2012-11-14 | 株式会社東芝 | 磁気共鳴イメージング装置 |
| US7777486B2 (en) * | 2007-09-13 | 2010-08-17 | The Board Of Trustees Of The Leland Stanford Junior University | Magnetic resonance imaging with bipolar multi-echo sequences |
| US20100303320A1 (en) * | 2007-11-07 | 2010-12-02 | Roemer Peter B | Systems, methods and machine readable programs for enhanced fat/water separation in magnetic resonance imaging |
| JP5275007B2 (ja) * | 2008-12-16 | 2013-08-28 | ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー | 磁気共鳴イメージング装置 |
| NZ599837A (en) * | 2009-12-02 | 2014-01-31 | Nanalysis Corp | Method and apparatus for producing homogeneous magnetic fields |
| CN103630859A (zh) * | 2012-08-24 | 2014-03-12 | 深圳市贝斯达医疗器械有限公司 | 一种寻找磁共振最优匀场值的方法 |
| CN104297709B (zh) * | 2014-10-31 | 2017-01-11 | 中国科学院武汉物理与数学研究所 | 一种基于正则化磁场分布图像重建的梯度匀场方法 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4899109A (en) * | 1988-08-17 | 1990-02-06 | Diasonics Inc. | Method and apparatus for automated magnetic field shimming in magnetic resonance spectroscopic imaging |
| US5343151A (en) * | 1993-03-11 | 1994-08-30 | Bruker Instruments, Inc. | Method for automatically shimming a high resolution NMR magnet |
| US6064208A (en) * | 1998-04-02 | 2000-05-16 | Picker International, Inc. | Two-peak alignment method of field shimming |
-
1999
- 1999-02-05 JP JP02882399A patent/JP3731135B2/ja not_active Expired - Fee Related
-
2000
- 2000-02-04 US US09/497,682 patent/US6489770B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US6489770B1 (en) | 2002-12-03 |
| JP2000225105A (ja) | 2000-08-15 |
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