JP5346951B2 - 冷却システムとヘリウムの圧力監視とを備えた磁気共鳴システム - Google Patents
冷却システムとヘリウムの圧力監視とを備えた磁気共鳴システム Download PDFInfo
- Publication number
- JP5346951B2 JP5346951B2 JP2010537566A JP2010537566A JP5346951B2 JP 5346951 B2 JP5346951 B2 JP 5346951B2 JP 2010537566 A JP2010537566 A JP 2010537566A JP 2010537566 A JP2010537566 A JP 2010537566A JP 5346951 B2 JP5346951 B2 JP 5346951B2
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- JP
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- Prior art keywords
- gradient
- magnetic resonance
- coil
- cooling system
- magnetic field
- 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.)
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- 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
- G01R33/381—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets
- G01R33/3815—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets with superconducting coils, e.g. power supply therefor
-
- 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
- G01R33/3804—Additional hardware for cooling or heating of the magnet assembly, for housing a cooled or heated part of the magnet assembly or for temperature control of the magnet assembly
-
- 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
- G01R33/385—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils
- G01R33/3854—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils means for active and/or passive vibration damping or acoustical noise suppression in gradient magnet coil systems
-
- 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
- G01R33/389—Field stabilisation, e.g. by field measurements and control means or indirectly by current stabilisation
-
- 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
- G01R33/58—Calibration of imaging systems, e.g. using test probes, Phantoms; Calibration objects or fiducial markers such as active or passive RF coils surrounding an MR active material
-
- 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
- G01R33/546—Interface between the MR system and the user, e.g. for controlling the operation of the MR system or for the design of pulse sequences
-
- 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
- G01R33/56509—Correction of image distortions, e.g. due to magnetic field inhomogeneities due to motion, displacement or flow, e.g. gradient moment nulling
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/04—Cooling
Description
− 主磁場を生成する超電導コイルを有する主磁石、
− 主磁場に重畳される傾斜磁場を印加する傾斜システム、
− 超電導コイルをその臨界超電導温度より低い温度まで冷却する冷却システム、
− 傾斜システムから冷却システムへのエネルギー伝導を評価する伝達モニタ、
を有し、
− 伝達モニタは、冷却システム内の圧力変化を測定するように構成されている、
磁気共鳴検査システムによって達成される。
Claims (3)
- − 主磁場を生成する超電導コイルを有する主磁石、
− 前記主磁場に重畳される傾斜磁場を印加する傾斜システム、
− 前記超電導コイルをその臨界超電導温度より低い温度まで冷却する冷却システム、
− 前記傾斜システムから前記冷却システムへのエネルギー伝導を評価する伝達モニタ、
を有し、
− 前記伝達モニタは、前記冷却システム内の圧力変化を測定するように構成されている、
磁気共鳴検査システム。 - 前記伝達モニタは、
− 徐々に増大する傾斜強度を有するテスト用傾斜磁場を生成するように前記傾斜システムを制御し、且つ
− 前記テスト用傾斜磁場の印加中の前記冷却システム内の圧力を、傾斜磁場が印加されないときの圧力と比較することによって、前記エネルギー伝導を評価する
ように構成されている、請求項1に記載の磁気共鳴検査システム。 - 前記伝達モニタは、
− 傾斜パルス列の選択を受けて、
− 前記傾斜パルス列に応じて予期される、前記エネルギー伝導によるヘリウム消費量を計算する
ように構成されている、請求項1に記載の磁気共鳴検査システム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07122834.0 | 2007-12-11 | ||
EP07122834 | 2007-12-11 | ||
PCT/IB2008/055136 WO2009074939A1 (en) | 2007-12-11 | 2008-12-08 | Magnetic resonance system with cooling system and monitoring of helium pressure |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2011505950A JP2011505950A (ja) | 2011-03-03 |
JP5346951B2 true JP5346951B2 (ja) | 2013-11-20 |
Family
ID=40445417
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010537566A Expired - Fee Related JP5346951B2 (ja) | 2007-12-11 | 2008-12-08 | 冷却システムとヘリウムの圧力監視とを備えた磁気共鳴システム |
Country Status (5)
Country | Link |
---|---|
US (1) | US8593145B2 (ja) |
EP (1) | EP2223137B1 (ja) |
JP (1) | JP5346951B2 (ja) |
CN (1) | CN101896833B (ja) |
WO (1) | WO2009074939A1 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8593145B2 (en) * | 2007-12-11 | 2013-11-26 | Koninklijke Philips N.V. | Magnetic resonance system with cooling system and monitoring of helium pressure |
CN102301508B (zh) | 2009-03-25 | 2015-02-25 | 株式会社东芝 | 非水电解质电池用负极活性物质、其制造方法、非水电解质电池以及电池包 |
US8063638B2 (en) * | 2009-03-31 | 2011-11-22 | General Electric Company | Liquid dielectric gradient coil system and method |
DE102012202416B3 (de) * | 2012-02-16 | 2013-06-13 | Siemens Aktiengesellschaft | Verfahren zum Betreiben einer Spule sowie Überwachungsmodul, Magnetresonanztomographiesystem und Computerprogramm |
CN106033016A (zh) * | 2015-03-20 | 2016-10-19 | 西门子(深圳)磁共振有限公司 | 压力监控装置、超导磁体和磁共振成像系统 |
JP6123041B1 (ja) * | 2017-01-04 | 2017-04-26 | 株式会社日立製作所 | 磁気共鳴イメージング装置、クライオシステムの制御装置、および、クライオシステムの制御方法 |
US11703393B2 (en) * | 2018-06-01 | 2023-07-18 | Southwest Medical Resources, Inc. | System and method for monitoring cooling system |
CN109872857B (zh) * | 2019-02-14 | 2021-07-27 | 中国电力科学研究院有限公司 | 低温背场磁体及高温超导单元交流损耗测量装置 |
CN112397271B (zh) * | 2020-09-24 | 2022-10-04 | 江苏美时医疗技术有限公司 | 高温超导磁共振成像仪 |
JP2022076263A (ja) | 2020-11-09 | 2022-05-19 | キヤノンメディカルシステムズ株式会社 | 磁気共鳴イメージング装置および撮像管理方法 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0465503U (ja) * | 1990-10-11 | 1992-06-08 | ||
JP3343391B2 (ja) * | 1993-04-12 | 2002-11-11 | ジーイー横河メディカルシステム株式会社 | Mri装置 |
ATE342154T1 (de) * | 1995-08-04 | 2006-11-15 | Ngimat Co | Chemischen gasphasenabscheidung und pulverbildung mittels einer thermischen spritzmethode aus beinahe superkitischen und superkritischen flussigkeitlösungen |
JPH09224919A (ja) * | 1996-02-26 | 1997-09-02 | Ge Yokogawa Medical Syst Ltd | 超電導磁石の環境監視装置およびmri装置 |
JPH1071132A (ja) * | 1996-08-30 | 1998-03-17 | Shimadzu Corp | 核磁気共鳴イメージング装置 |
US6516282B2 (en) * | 2001-04-19 | 2003-02-04 | Ge Medical Systems Global Technology Company | Predictive thermal control used with a vacuum enclosed coil assembly of a magnetic resonance imaging device |
JP3891807B2 (ja) * | 2001-09-14 | 2007-03-14 | ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー | 超電導マグネットの故障予測装置およびその方法、並びに磁気共鳴撮影システム |
EP1459333A1 (en) * | 2001-12-21 | 2004-09-22 | Koninklijke Philips Electronics N.V. | Cooling of a mri system |
JP2005512706A (ja) * | 2001-12-21 | 2005-05-12 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 勾配遅延補償のあるmri画像を生成する方法 |
DE10219766B4 (de) * | 2002-05-02 | 2005-12-29 | Siemens Ag | Verfahren zur automatischen Vermessung akustischer Resonanzen eines Magnetresonanz-Tomographiegerätes |
US7515973B2 (en) * | 2003-11-26 | 2009-04-07 | Ge Medical Systems, Inc. | Method and system for modeling of magnet cryogen cooler systems |
CN100444420C (zh) * | 2003-12-23 | 2008-12-17 | 东软飞利浦医疗设备系统有限责任公司 | 一种超导技术的断路器及其制备方法 |
US7412835B2 (en) * | 2005-06-27 | 2008-08-19 | Legall Edwin L | Apparatus and method for controlling a cryocooler by adjusting cooler gas flow oscillating frequency |
US8593145B2 (en) * | 2007-12-11 | 2013-11-26 | Koninklijke Philips N.V. | Magnetic resonance system with cooling system and monitoring of helium pressure |
-
2008
- 2008-12-08 US US12/746,780 patent/US8593145B2/en not_active Expired - Fee Related
- 2008-12-08 JP JP2010537566A patent/JP5346951B2/ja not_active Expired - Fee Related
- 2008-12-08 CN CN2008801201265A patent/CN101896833B/zh not_active Expired - Fee Related
- 2008-12-08 EP EP08859805.7A patent/EP2223137B1/en not_active Not-in-force
- 2008-12-08 WO PCT/IB2008/055136 patent/WO2009074939A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
US8593145B2 (en) | 2013-11-26 |
EP2223137B1 (en) | 2016-03-16 |
EP2223137A1 (en) | 2010-09-01 |
WO2009074939A1 (en) | 2009-06-18 |
JP2011505950A (ja) | 2011-03-03 |
CN101896833A (zh) | 2010-11-24 |
CN101896833B (zh) | 2013-05-29 |
US20100253334A1 (en) | 2010-10-07 |
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