JPH049413B2 - - Google Patents
Info
- Publication number
- JPH049413B2 JPH049413B2 JP60191527A JP19152785A JPH049413B2 JP H049413 B2 JPH049413 B2 JP H049413B2 JP 60191527 A JP60191527 A JP 60191527A JP 19152785 A JP19152785 A JP 19152785A JP H049413 B2 JPH049413 B2 JP H049413B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- signal
- detection sensor
- coil
- gradient
- 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 - Lifetime
Links
- 230000003068 static effect Effects 0.000 claims description 52
- 238000001514 detection method Methods 0.000 claims description 43
- 238000005481 NMR spectroscopy Methods 0.000 claims description 37
- 238000003384 imaging method Methods 0.000 claims description 23
- 230000010355 oscillation Effects 0.000 description 27
- 238000005259 measurement Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000005284 excitation Effects 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 5
- 150000001975 deuterium Chemical class 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 2
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N Heavy water Chemical compound [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229910052805 deuterium Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- G01R33/565—Correction of image distortions, e.g. due to magnetic field inhomogeneities
- G01R33/56563—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by a distortion of the main magnetic field B0, e.g. temporal variation of the magnitude or spatial inhomogeneity of B0
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 (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60191527A JPS6263848A (ja) | 1985-08-30 | 1985-08-30 | Ｎｍｒイメ−ジング装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60191527A JPS6263848A (ja) | 1985-08-30 | 1985-08-30 | Ｎｍｒイメ−ジング装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6263848A JPS6263848A (ja) | 1987-03-20 |
| JPH049413B2 true JPH049413B2 (zh) | 1992-02-20 |
Family
ID=16276146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60191527A Granted JPS6263848A (ja) | 1985-08-30 | 1985-08-30 | Ｎｍｒイメ−ジング装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6263848A (zh) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6242915B1 (en) * | 1999-08-27 | 2001-06-05 | General Electric Company | Field-frequency lock system for magnetic resonance system |
| WO2015072301A1 (ja) * | 2013-11-12 | 2015-05-21 | 株式会社 日立メディコ | 磁気共鳴イメージング装置 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6050441A (ja) * | 1983-08-30 | 1985-03-20 | Yokogawa Medical Syst Ltd | 核磁気共鳴イメ−ジング装置における磁界較正装置 |
-
1985
- 1985-08-30 JP JP60191527A patent/JPS6263848A/ja active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6050441A (ja) * | 1983-08-30 | 1985-03-20 | Yokogawa Medical Syst Ltd | 核磁気共鳴イメ−ジング装置における磁界較正装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6263848A (ja) | 1987-03-20 |
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