JP3906418B2 - Mri用磁界発生装置 - Google Patents
Mri用磁界発生装置 Download PDFInfo
- Publication number
- JP3906418B2 JP3906418B2 JP24406896A JP24406896A JP3906418B2 JP 3906418 B2 JP3906418 B2 JP 3906418B2 JP 24406896 A JP24406896 A JP 24406896A JP 24406896 A JP24406896 A JP 24406896A JP 3906418 B2 JP3906418 B2 JP 3906418B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- magnetic
- holder
- mri
- gap
- 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
- 239000011800 void material Substances 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 11
- 239000000696 magnetic material Substances 0.000 description 8
- 238000003384 imaging method Methods 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000003325 tomography Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- 229910001035 Soft ferrite Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000003068 static effect Effects 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
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
- G01R33/387—Compensation of inhomogeneities
- G01R33/3873—Compensation of inhomogeneities using ferromagnetic bodies ; Passive shimming
Landscapes
- Physics & Mathematics (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 |
|---|---|---|---|
| JP24406896A JP3906418B2 (ja) | 1996-08-26 | 1996-08-26 | Mri用磁界発生装置 |
| PCT/JP1997/004867 WO1999033397A1 (fr) | 1996-08-26 | 1997-12-26 | Generateur de champ magnetique pour irm |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24406896A JP3906418B2 (ja) | 1996-08-26 | 1996-08-26 | Mri用磁界発生装置 |
| PCT/JP1997/004867 WO1999033397A1 (fr) | 1996-08-26 | 1997-12-26 | Generateur de champ magnetique pour irm |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPH1070027A JPH1070027A (ja) | 1998-03-10 |
| JPH1070027A5 JPH1070027A5 (enExample) | 2004-09-09 |
| JP3906418B2 true JP3906418B2 (ja) | 2007-04-18 |
Family
ID=26438254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24406896A Expired - Lifetime JP3906418B2 (ja) | 1996-08-26 | 1996-08-26 | Mri用磁界発生装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3906418B2 (enExample) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5923235A (en) * | 1998-10-23 | 1999-07-13 | General Electric Company | Shim assembly for a pole face of a magnet |
| JP2002165773A (ja) * | 2000-11-29 | 2002-06-11 | Ge Medical Systems Global Technology Co Llc | 静磁界均一化方法およびmri装置 |
| JP2005261806A (ja) * | 2004-03-22 | 2005-09-29 | Hitachi Medical Corp | 磁気共鳴イメージング装置 |
-
1996
- 1996-08-26 JP JP24406896A patent/JP3906418B2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1070027A (ja) | 1998-03-10 |
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