JP4331451B2 - 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
- JP4331451B2 JP4331451B2 JP2002256574A JP2002256574A JP4331451B2 JP 4331451 B2 JP4331451 B2 JP 4331451B2 JP 2002256574 A JP2002256574 A JP 2002256574A JP 2002256574 A JP2002256574 A JP 2002256574A JP 4331451 B2 JP4331451 B2 JP 4331451B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- signal
- space
- subject
- pulse
- 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 16
- 238000003384 imaging method Methods 0.000 claims description 24
- 230000005415 magnetization Effects 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 13
- 230000003068 static effect Effects 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000005481 NMR spectroscopy Methods 0.000 description 27
- 230000001629 suppression Effects 0.000 description 15
- 230000001052 transient effect Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 10
- 230000005284 excitation Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 description 5
- 238000002075 inversion recovery Methods 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 230000017531 blood circulation Effects 0.000 description 3
- 210000004351 coronary vessel Anatomy 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000000747 cardiac effect Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000000126 substance Substances 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
- G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
- G01R33/561—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
- G01R33/5613—Generating steady state signals, e.g. low flip angle sequences [FLASH]
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (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 |
|---|---|---|---|
| JP2002256574A JP4331451B2 (ja) | 2002-09-02 | 2002-09-02 | 磁気共鳴イメージング装置 |
| PCT/JP2003/011061 WO2004021881A1 (ja) | 2002-09-02 | 2003-08-29 | 磁気共鳴イメージング装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002256574A JP4331451B2 (ja) | 2002-09-02 | 2002-09-02 | 磁気共鳴イメージング装置 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2004089515A JP2004089515A (ja) | 2004-03-25 |
| JP2004089515A5 JP2004089515A5 (enExample) | 2005-10-06 |
| JP4331451B2 true JP4331451B2 (ja) | 2009-09-16 |
Family
ID=31972955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002256574A Expired - Fee Related JP4331451B2 (ja) | 2002-09-02 | 2002-09-02 | 磁気共鳴イメージング装置 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4331451B2 (enExample) |
| WO (1) | WO2004021881A1 (enExample) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4597857B2 (ja) * | 2005-12-26 | 2010-12-15 | 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 | Rfパルス印加方法およびmri装置 |
| WO2009081785A1 (ja) * | 2007-12-25 | 2009-07-02 | Hitachi Medical Corporation | 磁気共鳴イメージング装置及び磁気共鳴イメージング方法 |
| JP6045793B2 (ja) | 2012-01-13 | 2016-12-14 | 東芝メディカルシステムズ株式会社 | 磁気共鳴撮像装置 |
| CN103389481B (zh) * | 2012-05-11 | 2015-09-02 | 上海联影医疗科技有限公司 | 磁共振频率相位双编码采样方法及其图像重建方法 |
| EP3685178A4 (en) * | 2017-09-19 | 2021-05-26 | University of Cincinnati | SYSTEMS AND METHODS FOR DETECTION OF SMALL PHYSIOLOGICAL OR PATHOLOGICAL CHANGES USING HIGH-RESOLUTION MAGNETIC RESONANCE IMAGING |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07171127A (ja) * | 1993-12-20 | 1995-07-11 | Hitachi Medical Corp | 磁気共鳴イメ−ジング装置 |
| DE4427497C2 (de) * | 1994-08-03 | 1996-06-20 | Siemens Ag | Pulssequenz für ein Kernspintomographiegerät |
| JP4225648B2 (ja) * | 1999-09-08 | 2009-02-18 | 株式会社東芝 | Mri装置 |
| JP2003319917A (ja) * | 2002-04-30 | 2003-11-11 | Toshiba Corp | 磁気共鳴イメージング装置 |
-
2002
- 2002-09-02 JP JP2002256574A patent/JP4331451B2/ja not_active Expired - Fee Related
-
2003
- 2003-08-29 WO PCT/JP2003/011061 patent/WO2004021881A1/ja not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2004021881A1 (ja) | 2004-03-18 |
| JP2004089515A (ja) | 2004-03-25 |
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