CN115542214A - 磁共振成像装置 - Google Patents
磁共振成像装置 Download PDFInfo
- Publication number
- CN115542214A CN115542214A CN202210632135.4A CN202210632135A CN115542214A CN 115542214 A CN115542214 A CN 115542214A CN 202210632135 A CN202210632135 A CN 202210632135A CN 115542214 A CN115542214 A CN 115542214A
- Authority
- CN
- China
- Prior art keywords
- magnetic
- laminated body
- magnetic field
- coil
- laminate
- 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.)
- Pending
Links
- 238000002595 magnetic resonance imaging Methods 0.000 title claims abstract description 34
- 238000003384 imaging method Methods 0.000 claims abstract description 40
- 230000003068 static effect Effects 0.000 claims abstract description 29
- 230000004907 flux Effects 0.000 claims abstract description 26
- 238000010030 laminating Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 229910000976 Electrical steel Inorganic materials 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000010409 thin film Substances 0.000 description 6
- 239000012212 insulator Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910001035 Soft ferrite Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002344 surface layer 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
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/42—Screening
-
- 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
- G01R33/42—Screening
- G01R33/421—Screening of main or gradient magnetic field
- G01R33/4215—Screening of main or gradient magnetic field of the gradient magnetic field, e.g. using passive or active shielding of the gradient magnetic field
-
- 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
-
- 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
- G01R33/3802—Manufacture or installation of magnet assemblies; Additional hardware for transportation or installation of the magnet assembly or for providing mechanical support to components of the magnet assembly
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
-
- 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
- G01R33/3806—Open magnet assemblies for improved access to the sample, e.g. C-type or U-type magnets
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Life Sciences & Earth Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- High Energy & Nuclear Physics (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021107450A JP7646477B2 (ja) | 2021-06-29 | 2021-06-29 | 磁気共鳴イメージング装置 |
| JP2021-107450 | 2021-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115542214A true CN115542214A (zh) | 2022-12-30 |
Family
ID=84543031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210632135.4A Pending CN115542214A (zh) | 2021-06-29 | 2022-06-06 | 磁共振成像装置 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US12025685B2 (enExample) |
| JP (2) | JP7646477B2 (enExample) |
| CN (1) | CN115542214A (enExample) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2561591B2 (ja) | 1991-12-27 | 1996-12-11 | 住友特殊金属株式会社 | Ｍｒｉ用磁界発生装置 |
| EP0645641B1 (en) * | 1993-09-29 | 1999-06-16 | Oxford Magnet Technology Limited | Improvements in or relating to MRI magnets |
| JPH0831635A (ja) * | 1994-07-08 | 1996-02-02 | Sumitomo Special Metals Co Ltd | Ｍｒｉ用磁界発生装置 |
| US6794973B1 (en) * | 1998-04-14 | 2004-09-21 | Sumitomo Special Metals Co., Ltd. | Magnetic field generating device for MRI |
| JP2002102205A (ja) | 2000-10-02 | 2002-04-09 | Hitachi Medical Corp | 磁気共鳴イメージング装置 |
| JP2003126060A (ja) | 2001-10-23 | 2003-05-07 | Hitachi Ltd | 核磁気共鳴断層写真装置のマグネット |
| JP4214736B2 (ja) | 2002-08-08 | 2009-01-28 | 日立金属株式会社 | Ｍｒｉ用磁界発生装置 |
| US20100219833A1 (en) * | 2007-07-26 | 2010-09-02 | Emscan Limited | Magnet assembly |
| CN101388271A (zh) * | 2007-09-14 | 2009-03-18 | Ge医疗系统环球技术有限公司 | 磁体系统和mri设备 |
| WO2013038960A1 (ja) * | 2011-09-14 | 2013-03-21 | 株式会社 日立メディコ | 磁気共鳴イメージング装置、その運転方法およびクエンチ防止装置 |
| JP5891063B2 (ja) | 2012-02-17 | 2016-03-22 | 株式会社日立メディコ | 磁気共鳴イメージング装置 |
| JP6368625B2 (ja) | 2014-11-18 | 2018-08-01 | 株式会社日立製作所 | 磁気共鳴イメージング装置 |
-
2021
- 2021-06-29 JP JP2021107450A patent/JP7646477B2/ja active Active
-
2022
- 2022-06-06 CN CN202210632135.4A patent/CN115542214A/zh active Pending
- 2022-06-14 US US17/840,252 patent/US12025685B2/en active Active
-
2024
- 2024-12-27 JP JP2024232421A patent/JP2025036694A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US12025685B2 (en) | 2024-07-02 |
| JP2023005490A (ja) | 2023-01-18 |
| US20220413071A1 (en) | 2022-12-29 |
| JP7646477B2 (ja) | 2025-03-17 |
| JP2025036694A (ja) | 2025-03-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240827 Address after: Tokyo Capital of Japan Applicant after: FUJIFILM Corp. Country or region after: Japan Address before: Chiba County, Japan Applicant before: Fujifilm medical health Co.,Ltd. Country or region before: Japan |
|
| TA01 | Transfer of patent application right |