JP6688638B2 - 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

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Publication number
JP6688638B2
JP6688638B2 JP2016047476A JP2016047476A JP6688638B2 JP 6688638 B2 JP6688638 B2 JP 6688638B2 JP 2016047476 A JP2016047476 A JP 2016047476A JP 2016047476 A JP2016047476 A JP 2016047476A JP 6688638 B2 JP6688638 B2 JP 6688638B2
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Japan
Prior art keywords
imaging
amplifier
threshold value
circuit
magnetic resonance
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JP2016047476A
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Japanese (ja)
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JP2017158883A (ja
JP2017158883A5 (enExample
Inventor
治貴 中村
治貴 中村
雄二 高野
雄二 高野
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Canon Medical Systems Corp
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Canon Medical Systems Corp
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Priority to JP2016047476A priority Critical patent/JP6688638B2/ja
Priority to US15/448,240 priority patent/US10393830B2/en
Publication of JP2017158883A publication Critical patent/JP2017158883A/ja
Publication of JP2017158883A5 publication Critical patent/JP2017158883A5/ja
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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
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/36—Electrical details, e.g. matching or coupling of the coil to the receiver
    • G01R33/3614—RF power amplifiers
    • 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
    • G01R33/543—Control of the operation of the MR system, e.g. setting of acquisition parameters prior to or during MR data acquisition, dynamic shimming, use of one or more scout images for scan plane prescription
    • 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
    • G01R33/583—Calibration of signal excitation or detection systems, e.g. for optimal RF excitation power or frequency

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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
JP2016047476A 2016-03-10 2016-03-10 磁気共鳴イメージング装置 Active JP6688638B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2016047476A JP6688638B2 (ja) 2016-03-10 2016-03-10 磁気共鳴イメージング装置
US15/448,240 US10393830B2 (en) 2016-03-10 2017-03-02 Magnetic resonance imaging apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2016047476A JP6688638B2 (ja) 2016-03-10 2016-03-10 磁気共鳴イメージング装置

Publications (3)

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JP2017158883A JP2017158883A (ja) 2017-09-14
JP2017158883A5 JP2017158883A5 (enExample) 2019-03-14
JP6688638B2 true JP6688638B2 (ja) 2020-04-28

Family

ID=59788398

Family Applications (1)

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JP2016047476A Active JP6688638B2 (ja) 2016-03-10 2016-03-10 磁気共鳴イメージング装置

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US (1) US10393830B2 (enExample)
JP (1) JP6688638B2 (enExample)

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* Cited by examiner, † Cited by third party
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JP6965016B2 (ja) * 2017-04-27 2021-11-10 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その調整方法
US10473737B2 (en) 2017-08-18 2019-11-12 Synaptive Medical (Barbados) Inc. Active switching for RF slice-selecting
EP3528001A1 (en) * 2018-02-15 2019-08-21 Koninklijke Philips N.V. Multi-channel rf transmit system
EP3528000A1 (en) 2018-02-15 2019-08-21 Koninklijke Philips N.V. Rf transmit system with switchable power supply device
JP7199852B2 (ja) 2018-07-02 2023-01-06 キヤノンメディカルシステムズ株式会社 高周波電源及び磁気共鳴イメージング装置
EP3644084A1 (en) 2018-10-23 2020-04-29 Koninklijke Philips N.V. Generation of rf pulses for mri applications
JP7286338B2 (ja) * 2019-02-15 2023-06-05 キヤノンメディカルシステムズ株式会社 高周波増幅装置および磁気共鳴イメージング装置
US11211643B2 (en) * 2019-11-25 2021-12-28 Panasonic Avionics Corporation Methods and systems for dynamically controlling discharge ratio of a plurality of batteries packs

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JPS6026020B2 (ja) 1979-06-20 1985-06-21 呉羽センイ株式会社 耐熱ラギングシ−ト
US4983921A (en) * 1989-08-18 1991-01-08 The Regents Of The University Of California Rapid calibration of nutation angles in MRI
GB9616499D0 (en) * 1996-08-06 1996-09-25 Oxford Instr Uk Ltd Magnetic field pulse generator
JPH11318854A (ja) * 1998-05-13 1999-11-24 Hitachi Medical Corp 磁気共鳴イメージング装置
US6879852B1 (en) * 2000-07-10 2005-04-12 Otward M. Mueller Low-cost magnetic resonance imaging (MRI) Cryo-system
DE10133655B4 (de) * 2001-07-11 2004-02-26 Siemens Ag Magnet-Resonanz-Tomographiegerät mit verbesserter örtlicher und zeitlicher Stabilisierung der Homogenität des magnetischen Grundfeldes
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JP5122864B2 (ja) * 2007-05-21 2013-01-16 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 Ｒｆコイル駆動回路およびｍｒｉ装置
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WO2010110881A1 (en) * 2009-03-27 2010-09-30 Hetherington Hoby P Improved transceiver apparatus, system, and methodology for superior in-vivo imaging of human anatomy
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WO2012127450A1 (en) * 2011-03-24 2012-09-27 Koninklijke Philips Electronics N.V. Reduction of peak electrical power consumption in magnetic resonance imaging systems
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WO2014038422A1 (ja) * 2012-09-10 2014-03-13 株式会社東芝 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電力制御方法
KR101480413B1 (ko) * 2012-12-04 2015-01-08 삼성전자주식회사 B1 정보 획득 방법 및 장치
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JP6532657B2 (ja) * 2014-07-31 2019-06-19 キヤノンメディカルシステムズ株式会社 Ｍｒｉ装置
DE102014221564A1 (de) * 2014-10-23 2016-04-28 Siemens Aktiengesellschaft Verbesserte Messsequenz zum Bestimmen eines Magnetresonanz-Bilds
EP3234623B1 (en) * 2014-12-18 2019-09-04 Koninklijke Philips N.V. A power device and method for driving a load
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Publication number Publication date
US20170261573A1 (en) 2017-09-14
JP2017158883A (ja) 2017-09-14
US10393830B2 (en) 2019-08-27

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