JPH0244221B2 - - Google Patents
Info
- Publication number
- JPH0244221B2 JPH0244221B2 JP60035746A JP3574685A JPH0244221B2 JP H0244221 B2 JPH0244221 B2 JP H0244221B2 JP 60035746 A JP60035746 A JP 60035746A JP 3574685 A JP3574685 A JP 3574685A JP H0244221 B2 JPH0244221 B2 JP H0244221B2
- Authority
- JP
- Japan
- Prior art keywords
- image
- magnetic field
- gradient
- signal
- fid
- 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
- 238000012545 processing Methods 0.000 claims description 18
- 238000012937 correction Methods 0.000 claims description 15
- 238000013421 nuclear magnetic resonance imaging Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 3
- 238000009828 non-uniform distribution Methods 0.000 claims description 3
- 230000001131 transforming effect Effects 0.000 claims description 2
- 238000002124 flame ionisation detection Methods 0.000 claims 1
- 238000002595 magnetic resonance imaging Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 10
- 238000005481 NMR spectroscopy Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003325 tomography Methods 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 |
|---|---|---|---|
| JP60035746A JPS61194339A (ja) | 1985-02-25 | 1985-02-25 | 核磁気共鳴撮像装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60035746A JPS61194339A (ja) | 1985-02-25 | 1985-02-25 | 核磁気共鳴撮像装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61194339A JPS61194339A (ja) | 1986-08-28 |
| JPH0244221B2 true JPH0244221B2 (de) | 1990-10-03 |
Family
ID=12450379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60035746A Granted JPS61194339A (ja) | 1985-02-25 | 1985-02-25 | 核磁気共鳴撮像装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61194339A (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2830002B2 (ja) * | 1989-01-30 | 1998-12-02 | 株式会社デンソー | 内燃機関用燃料噴射時期制御装置 |
-
1985
- 1985-02-25 JP JP60035746A patent/JPS61194339A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61194339A (ja) | 1986-08-28 |
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