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1. 发明授权

EP3884290B1 A SELF-SUPPORTING FLEXIBLE THERMAL RADIATION SHIELD FOR A SUPERCONDUCTING MAGNET ASSEMBLY 有权
公开(公告)号：EP3884290B1
公开(公告)日：2024-08-14
申请号：EP19801713.9
申请日：2019-10-29
IPC分类号： G01R33/38 , G01R33/3815 , H01F6/04
CPC分类号： G01R33/3804 , G01R33/3815 , H01F6/04

2. 发明授权

EP3896472B1 DEVICE AND METHOD FOR NUCLEAR MAGNET RESONANCE SPECTROSCOPY 有权
公开(公告)号：EP3896472B1
公开(公告)日：2024-07-31
申请号：EP20169364.5
申请日：2020-04-14
IPC分类号： G01R33/38 , G01R33/44 , G01R33/34 , G01R33/48 , G01R33/383 , G01R33/381 , G01R33/3815 , G01R33/46
CPC分类号： G01R33/3808 , G01R33/383 , G01R33/4814 , G01R33/381 , G01R33/3802 , G01R33/34007 , G01R33/445 , G01R33/46 , G01R33/3815

3. 发明公开

EP4348283A1 SUPERCONDUCTING MAGNET SYSTEM FOR GENERATING HOMOGENEOUS MAGNETIC FIELD 审中-实审
公开(公告)号：EP4348283A1
公开(公告)日：2024-04-10
申请号：EP22731286.5
申请日：2022-06-01
申请人： Oxford Instruments Nanotechnology Tools Limited
发明人： VARNEY, Andrew
IPC分类号： G01R33/3875 , G01R33/3815

4. 发明授权

EP3425415B1 SYSTEMS AND METHODS FOR RAMPING DOWN MAGNETIC RESONANCE MAGNET 有权转让
公开(公告)号：EP3425415B1
公开(公告)日：2023-08-16
申请号：EP17204397.8
申请日：2017-11-29
发明人： Liu, Jianfeng
IPC分类号： G01R33/38 , G01R33/3815 , G01R33/28 , H01F6/02 , H02H7/00

5. 发明授权

EP3987302B1 THERMAL RADIATION SHIELD FOR A MAGNETIC RESONANCE IMAGING SYSTEM 有权
公开(公告)号：EP3987302B1
公开(公告)日：2023-06-21
申请号：EP20746902.4
申请日：2020-07-16
发明人： BEVILACQUA, Marco , DIETZ, Peter , KRUG, Andreas , MALLETT, Michael
IPC分类号： G01R33/38 , G01R33/3815 , G01R33/385 , H01F6/04

6. 发明授权

EP3772071B1 MAGNETSPULENSEKTION MIT INTEGRIERTEN JOINTS, INSBESONDERE HTS-LTS-JOINTS, UND ZUGEHÖRIGE MAGNETANORDNUNG 有权
公开(公告)号：EP3772071B1
公开(公告)日：2022-01-26
申请号：EP20186807.2
申请日：2020-07-20
发明人： Herzog, Robert , Vonlanthen, Patrik
IPC分类号： H01F6/06 , G01R33/3815

7. 发明公开

EP3867931A1 FAST QUENCH PROTECTION FOR LOW COPPER TO SUPERCONDUCTING WIRE COILS 有权
公开(公告)号：EP3867931A1
公开(公告)日：2021-08-25
申请号：EP19790516.9
申请日：2019-10-18
申请人： Koninklijke Philips N.V.
发明人： VAN LANEN, Ezra, Petrus, Antonius
IPC分类号： H01F6/02 , G01R33/3815 , H01F6/06

8. 发明公开

EP3822992A1 METHOD FOR CHARGING A SUPERCONDUCTOR MAGNET SYSTEM, WITH A MAIN SUPERCONDUCTOR BULK MAGNET AND A SHIELD SUPERCONDUCTOR BULK MAGNET 有权
公开(公告)号：EP3822992A1
公开(公告)日：2021-05-19
申请号：EP19209166.8
申请日：2019-11-14
申请人： Bruker Switzerland AG
发明人： March, Stephen Alfred , Hinderer, Jörg , Heiss, Stephan
IPC分类号： H01F6/00 , G01R33/3815 , H01F6/04 , H01F13/00
摘要： The invention relates to a method for charging a superconductor magnet system (3) comprising coaxially a main superconductor bulk magnet (10) and a shield superconductor bulk magnet (11), the method comprising the following steps:
step a) arranging the superconductor magnet system (3) at least partially within a charger bore (6) of a charger magnet (2),
step b) with T main > T main crit and T shield > T shield crit , applying an electrical current I charger to the charger magnet (2) and increasing I charger to a first current I 1 >0,
step c) lowering T main to or below an operation temperature T main op of the main superconductor bulk magnet (10), with T main op main crit , while keeping T shield > T shield crit ;
step d) lowering I charger to a second current I 2 main is induced in the main superconductor bulk magnet (10);
step e) lowering T shield to or below an operation temperature T shield op of the shield superconductor bulk magnet (11), with T shield op shield crit ;
step f) increasing I charger to zero, wherein a shield persistent current IP shield is induced in the shield superconductor bulk magnet (11);
step g) removing the superconductor magnet system (3) from the charger bore (6) of the charger magnet (2), and keeping T main at or below T main op with T main op main crit as well as T shield at or below T shield op with T shield op shield crit ; with T main : temperature of the main superconductor bulk magnet (10); T main crit : critical temperature of the main superconductor bulk magnet (10); T shield : temperature of the shield superconductor bulk magnet (11); and T Shield crit : critical temperature of the shield superconductor bulk magnet (11). The invention allows to reduce the stray field of the superconductor magnet system, wherein less weight and space is required for shielding purposes.

9. 发明授权

EP3657193B1 METHOD FOR MAGNETIZING A SUPERCONDUCTOR BULK MAGNET, WITH GENERATING AN AUXILIARY MAGNETIC FIELD IN THE SUPERCONDUCTOR BORE 有权
公开(公告)号：EP3657193B1
公开(公告)日：2021-02-17
申请号：EP18207267.8
申请日：2018-11-20
发明人： Hinderer, Jörg , March, Stephen Alfred , Borgnolutti, Franck
IPC分类号： G01R33/3815 , H01F6/00 , H01F6/04 , H01F13/00

10. 发明公开

EP3739353A1 METHOD AND DEVICE FOR CONTROLLING A MAGNETIC RESONANCE IMAGING SYSTEM 有权转让
公开(公告)号：EP3739353A1
公开(公告)日：2020-11-18
申请号：EP19174690.8
申请日：2019-05-15
申请人： Siemens Healthcare GmbH
发明人： Bampton, Adrian , Biber, Stephan , Johnstone, Adam Paul , Nistler, Jürgen , Potthast, Andreas , Vester, Markus , de Oliveira, Andre
IPC分类号： G01R33/389 , G01R33/58 , G01R33/3815
摘要： The invention describes a calibration method for calibrating a measuring element for determining the electric current I flowing through a basic-field magnet of a magnetic resonance imaging system, comprising the steps:
- performing a measurement with the measuring element,
- performing a frequency measurement in the magnetic field of the basic-field magnet with a frequency measuring unit,
wherein the measurement of the measuring element and the frequency measurement are corresponding to the same magnetic field of the basic-field magnet,
- calculating a calibration factor based on the deviation between the measurement of the measuring element and the frequency measurement,
- calibrating the measuring element or the electric current in the basic-field magnet based on the calibration factor.
The invention further describes a ramping method, a system for calibrating a measuring element, a magnet power supply unit, a control unit and a magnetic resonance imaging system.

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