JPH0577417B2 - - Google Patents
Info
- Publication number
- JPH0577417B2 JPH0577417B2 JP59281111A JP28111184A JPH0577417B2 JP H0577417 B2 JPH0577417 B2 JP H0577417B2 JP 59281111 A JP59281111 A JP 59281111A JP 28111184 A JP28111184 A JP 28111184A JP H0577417 B2 JPH0577417 B2 JP H0577417B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- gradient
- static magnetic
- signal
- gradient magnetic
- 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 37
- 238000002595 magnetic resonance imaging Methods 0.000 claims 4
- 238000003384 imaging method Methods 0.000 description 17
- 230000005284 excitation Effects 0.000 description 8
- 238000001514 detection method Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000002591 computed tomography Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001228 spectrum 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 (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59281111A JPS61153554A (ja) | 1984-12-26 | 1984-12-26 | 磁気共鳴イメ−ジング装置 |
DE19853545897 DE3545897A1 (de) | 1984-12-26 | 1985-12-23 | Vorrichtung zur magnetischen kernresonanzabbildung |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59281111A JPS61153554A (ja) | 1984-12-26 | 1984-12-26 | 磁気共鳴イメ−ジング装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61153554A JPS61153554A (ja) | 1986-07-12 |
JPH0577417B2 true JPH0577417B2 (enrdf_load_stackoverflow) | 1993-10-26 |
Family
ID=17634503
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP59281111A Granted JPS61153554A (ja) | 1984-12-26 | 1984-12-26 | 磁気共鳴イメ−ジング装置 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPS61153554A (enrdf_load_stackoverflow) |
DE (1) | DE3545897A1 (enrdf_load_stackoverflow) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0547440U (ja) * | 1991-10-11 | 1993-06-25 | 株式会社ユニシアジェックス | ポンプ |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4284950A (en) * | 1978-08-05 | 1981-08-18 | E M I Limited | Imaging systems |
US4471306A (en) * | 1982-02-03 | 1984-09-11 | General Electric Company | Method of NMR imaging which overcomes T2 * effects in an inhomogeneous static magnetic field |
DE3209810A1 (de) * | 1982-03-18 | 1983-10-13 | Bruker Medizintechnik Gmbh, 7512 Rheinstetten | Verfahren zum messen der magnetischen kernresonanz fuer die nmr-tomographie |
JPS59200947A (ja) * | 1983-04-30 | 1984-11-14 | Toshiba Corp | Mri装置における静磁場強度調整方法 |
-
1984
- 1984-12-26 JP JP59281111A patent/JPS61153554A/ja active Granted
-
1985
- 1985-12-23 DE DE19853545897 patent/DE3545897A1/de not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
JPS61153554A (ja) | 1986-07-12 |
DE3545897A1 (de) | 1986-07-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term |