JP3728167B2 - 磁気共鳴イメージング装置 - Google Patents

磁気共鳴イメージング装置 Download PDF

Info

Publication number
JP3728167B2
JP3728167B2 JP2000034027A JP2000034027A JP3728167B2 JP 3728167 B2 JP3728167 B2 JP 3728167B2 JP 2000034027 A JP2000034027 A JP 2000034027A JP 2000034027 A JP2000034027 A JP 2000034027A JP 3728167 B2 JP3728167 B2 JP 3728167B2
Authority
JP
Japan
Prior art keywords
magnetic field
correction
vibration
source
static
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 - Fee Related
Application number
JP2000034027A
Other languages
English (en)
Japanese (ja)
Other versions
JP2001218751A5 (enExample
JP2001218751A (ja
Inventor
宗孝 津田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Healthcare Manufacturing Ltd
Original Assignee
Hitachi Medical Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Medical Corp filed Critical Hitachi Medical Corp
Priority to JP2000034027A priority Critical patent/JP3728167B2/ja
Priority to US09/778,995 priority patent/US6504373B2/en
Publication of JP2001218751A publication Critical patent/JP2001218751A/ja
Publication of JP2001218751A5 publication Critical patent/JP2001218751A5/ja
Application granted granted Critical
Publication of JP3728167B2 publication Critical patent/JP3728167B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • G01R33/381—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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
JP2000034027A 2000-02-10 2000-02-10 磁気共鳴イメージング装置 Expired - Fee Related JP3728167B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2000034027A JP3728167B2 (ja) 2000-02-10 2000-02-10 磁気共鳴イメージング装置
US09/778,995 US6504373B2 (en) 2000-02-10 2001-02-07 Magnetic resonance imaging apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000034027A JP3728167B2 (ja) 2000-02-10 2000-02-10 磁気共鳴イメージング装置

Publications (3)

Publication Number Publication Date
JP2001218751A JP2001218751A (ja) 2001-08-14
JP2001218751A5 JP2001218751A5 (enExample) 2005-06-23
JP3728167B2 true JP3728167B2 (ja) 2005-12-21

Family

ID=18558424

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000034027A Expired - Fee Related JP3728167B2 (ja) 2000-02-10 2000-02-10 磁気共鳴イメージング装置

Country Status (2)

Country Link
US (1) US6504373B2 (enExample)
JP (1) JP3728167B2 (enExample)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030195410A1 (en) * 1995-08-10 2003-10-16 James Winter Method of treatment using magnetic resonance and apparatus therefor
DE10221640B4 (de) * 2002-05-15 2007-06-21 Siemens Ag Verfahren zur Vibrationskompensation bei Kernspintomographen
US7372265B2 (en) * 2003-02-05 2008-05-13 Koninklijke Philips Electronics N.V. Compensation of magnetic field disturbances due to vibrations in an MRI system
EP1452884A1 (en) * 2003-02-28 2004-09-01 Hitachi, Ltd. Superconductive magnet apparatus and magnetic resonance imaging apparatus
DE102004049497A1 (de) * 2004-10-11 2006-04-13 Siemens Ag Verfahren zur Kompensation einer Magnetfeldstörung eines Magnetresonanzgeräts und Magnetresonanzgerät
DE102006035949B4 (de) * 2006-07-31 2009-11-26 Bruker Biospin Ag Vorrichtung und Verfahren zur Kompensation von Magnetfeldstörungen in Magnetfeldern mit hoher Feldhomogenität
WO2009150576A1 (en) * 2008-06-10 2009-12-17 Koninklijke Philips Electronics N.V. Cryocooling system for mri providing reduced artifacts caused by vibrations
WO2010143603A1 (ja) * 2009-06-11 2010-12-16 株式会社 日立メディコ 磁気共鳴イメージング装置の調整方法および超電導磁石励磁用ドック
JP6042144B2 (ja) * 2012-09-12 2016-12-14 東芝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
JP2014212297A (ja) * 2013-04-05 2014-11-13 株式会社神戸製鋼所 超電導マグネット装置
GB2523762A (en) * 2014-03-04 2015-09-09 Siemens Plc Active compensation of magnetic field generated by a recondensing refrigerator
CA2967337C (en) 2014-11-11 2022-05-10 Hyperfine Research, Inc. Pulse sequences for low field magnetic resonance
WO2016093085A1 (ja) * 2014-12-09 2016-06-16 株式会社日立製作所 磁気共鳴イメージング装置及び冷凍機の運転制御方法
WO2016170153A1 (en) * 2015-04-23 2016-10-27 Universidad De Zaragoza Method for cooling cryogenic liquids and system associated to said method
JP6571434B2 (ja) 2015-07-27 2019-09-04 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及び磁気共鳴イメージング装置のアーティファクト抑制方法
WO2017153805A1 (en) * 2016-03-09 2017-09-14 Synaptive Medical (Barbados) Inc. Reducing magnetic field instabilities caused by oscillations of a mechanical cryocooler in magnetic resonance systems
CN120630073A (zh) * 2017-01-12 2025-09-12 皇家飞利浦有限公司 由冷头的周期运动导致的磁场分量的补偿
TW202012951A (zh) 2018-07-31 2020-04-01 美商超精細研究股份有限公司 低場漫射加權成像
CN110133559B (zh) * 2019-05-21 2021-05-11 辽宁开普医疗系统有限公司 一种磁共振b0场扰动补偿系统及方法
US11510588B2 (en) 2019-11-27 2022-11-29 Hyperfine Operations, Inc. Techniques for noise suppression in an environment of a magnetic resonance imaging system
CN114388217B (zh) * 2021-11-24 2024-11-01 鑫高益医疗设备股份有限公司 一种无液氦超导磁体动态主动稳场方法、系统及装置
DE102023205673A1 (de) * 2023-06-16 2024-12-19 Siemens Healthineers Ag Lokalspule mit Energiesparvorrichtung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5548653A (en) * 1992-02-14 1996-08-20 General Electric Company Active control of noise and vibrations in magnetic resonance imaging systems using vibrational inputs
US5363077A (en) 1994-01-31 1994-11-08 General Electric Company MRI magnet having a vibration-isolated cryocooler
US5952734A (en) 1995-02-15 1999-09-14 Fonar Corporation Apparatus and method for magnetic systems
JP3980105B2 (ja) 1996-12-26 2007-09-26 株式会社日立メディコ 静磁場発生装置及び磁気共鳴イメージング装置
JP3871789B2 (ja) 1997-12-01 2007-01-24 株式会社日立メディコ パッシブシールド型超電導磁石
JPH11197132A (ja) 1998-01-13 1999-07-27 Hitachi Medical Corp パッシブシールド型超電導磁石
US6169404B1 (en) * 1998-12-18 2001-01-02 General Electric Company Vibration cancellation for C-shaped superconducting magnet
US6188220B1 (en) * 1999-05-04 2001-02-13 General Electric Company Method and apparatus for measuring vibration of a magnetic resonance imaging system

Also Published As

Publication number Publication date
US6504373B2 (en) 2003-01-07
US20010013778A1 (en) 2001-08-16
JP2001218751A (ja) 2001-08-14

Similar Documents

Publication Publication Date Title
JP3728167B2 (ja) 磁気共鳴イメージング装置
US7034537B2 (en) MRI apparatus correcting vibratory static magnetic field fluctuations, by utilizing the static magnetic fluctuation itself
US8305078B2 (en) Method of performing MRI with an atomic magnetometer
JP4114989B2 (ja) 磁気共鳴システムの磁場を補償する方法
JP3402916B2 (ja) 核スピントモグラフ装置のマグネット装置のシム調整方法及び方法を実施する装置
JP4106053B2 (ja) 磁気共鳴イメージング装置及び渦電流補償導出方法
CN104224179A (zh) 一种磁共振成像系统的磁场稳定方法和装置
JP2000037367A (ja) 磁場のシミング
CN107624162B (zh) 具有场探头的磁共振检查系统
CN101896833B (zh) 具有冷凝系统并监测氦压的磁共振系统
JPH04288136A (ja) 磁石の高速補正法
JP2016168265A (ja) 磁気共鳴イメージング装置、および、その運転方法
JPH08240652A (ja) Ｍｒ方法およびｍｒ装置
JPH03500016A (ja) 渦電流効果の測定方法
WO2016093085A1 (ja) 磁気共鳴イメージング装置及び冷凍機の運転制御方法
JP3976479B2 (ja) 磁気共鳴イメージング装置における磁場変動を低減させる方法及び装置
US6294916B1 (en) NMR and ESR probes for closed loop control of gradient fields
CN109814057A (zh) 用于运行磁共振成像设备的方法和磁共振成像设备
JP4592975B2 (ja) 磁場安定化装置、磁気共鳴画像診断装置、および磁場安定化方法
JPH10262947A (ja) 磁気共鳴検査装置
JP3167038B2 (ja) 磁気共鳴イメージング装置
JPH04343833A (ja) 静磁場不均一の一次項補正の可能な磁気共鳴イメージン　　　　　　　　　　　グ装置
JPH01136645A (ja) 磁気共鳴イメージング装置
JPH0337046A (ja) 磁気共鳴撮像装置の磁場状態検出方法
GB2251491A (en) NMR motion artifact reduction

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040927

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20040927

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20050610

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20050621

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20050812

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20050920

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20050930

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091007

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101007

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20111007

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20111007

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121007

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121007

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131007

Year of fee payment: 8

LAPS Cancellation because of no payment of annual fees