ATE551784T1 - Verfahren und schaltungsanordnung für den betrieb von mehrkanal-sende-/empfangsantennen- vorrichtungen - Google Patents

Verfahren und schaltungsanordnung für den betrieb von mehrkanal-sende-/empfangsantennen- vorrichtungen

Info

Publication number
ATE551784T1
ATE551784T1 AT06765658T AT06765658T ATE551784T1 AT E551784 T1 ATE551784 T1 AT E551784T1 AT 06765658 T AT06765658 T AT 06765658T AT 06765658 T AT06765658 T AT 06765658T AT E551784 T1 ATE551784 T1 AT E551784T1
Authority
AT
Austria
Prior art keywords
receive antenna
channel transmit
circuit arrangement
power levels
antenna devices
Prior art date
Application number
AT06765658T
Other languages
English (en)
Inventor
Ingmar Graesslin
Peter Vernickel
Christoph Leussler
Original Assignee
Koninkl Philips Electronics Nv
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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Application granted granted Critical
Publication of ATE551784T1 publication Critical patent/ATE551784T1/de

Links

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
    • G01R33/44—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
    • G01R33/561—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
    • G01R33/5611—Parallel magnetic resonance imaging, e.g. sensitivity encoding [SENSE], simultaneous acquisition of spatial harmonics [SMASH], unaliasing by Fourier encoding of the overlaps using the temporal dimension [UNFOLD], k-t-broad-use linear acquisition speed-up technique [k-t-BLAST], k-t-SENSE
    • G01R33/5612—Parallel RF transmission, i.e. RF pulse transmission using a plurality of independent transmission channels
    • 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
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G01R33/341—Constructional details, e.g. resonators, specially adapted to MR comprising surface coils
    • G01R33/3415—Constructional details, e.g. resonators, specially adapted to MR comprising surface coils comprising arrays of sub-coils, i.e. phased-array coils with flexible receiver channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/23—Indication means, e.g. displays, alarms, audible means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • 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
    • G01R33/288—Provisions within MR facilities for enhancing safety during MR, e.g. reduction of the specific absorption rate [SAR], detection of ferromagnetic objects in the scanner room
    • 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
    • G01R33/3607—RF waveform generators, e.g. frequency generators, amplitude-, frequency- or phase modulators or shifters, pulse programmers, digital to analog converters for the RF signal, means for filtering or attenuating of the RF signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
AT06765658T 2005-04-29 2006-04-27 Verfahren und schaltungsanordnung für den betrieb von mehrkanal-sende-/empfangsantennen- vorrichtungen ATE551784T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05103577 2005-04-29
PCT/IB2006/051311 WO2006120589A2 (en) 2005-04-29 2006-04-27 Method and circuit arrangement for power monitoring in multi-channel transmit/receive antenna devices

Publications (1)

Publication Number Publication Date
ATE551784T1 true ATE551784T1 (de) 2012-04-15

Family

ID=37396943

Family Applications (1)

Application Number Title Priority Date Filing Date
AT06765658T ATE551784T1 (de) 2005-04-29 2006-04-27 Verfahren und schaltungsanordnung für den betrieb von mehrkanal-sende-/empfangsantennen- vorrichtungen

Country Status (6)

Country Link
US (1) US8099059B2 (de)
EP (1) EP1878132B1 (de)
JP (1) JP5329947B2 (de)
CN (1) CN101171761B (de)
AT (1) ATE551784T1 (de)
WO (1) WO2006120589A2 (de)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006061740A1 (de) 2006-12-28 2008-07-10 Siemens Ag Verfahren und Kontrolleinrichtung zur Kontrolle der Hochfrequenzbelastung bei einer Magnetresonanzmessung
CN101903788B (zh) * 2007-12-21 2015-01-28 皇家飞利浦电子股份有限公司 磁共振安全性监测系统和方法
WO2009128013A1 (en) * 2008-04-16 2009-10-22 Koninklijke Philips Electronics N.V. Real-time local and global sar estimation for patient safety and improved scanning performance
CN102123661B (zh) * 2008-08-15 2014-03-12 皇家飞利浦电子股份有限公司 用于执行rf-安全mit扫描的方法和监控设备
EP2160063A1 (de) * 2008-08-29 2010-03-03 Gemplus Kontrolle der Zuverlässigkeit und/oder der Reichweite einer Funkverbindung
US8026721B2 (en) * 2009-02-25 2011-09-27 Siemens Aktiengesellschaft Remote body arrays for high-performance magnetic resonance imaging and spectroscopy
US8049499B2 (en) * 2009-03-20 2011-11-01 Case Western Reserve University Controlling multi-channel transmitter effects on specific absorption rate
CN103492898B (zh) * 2011-04-21 2016-09-07 皇家飞利浦有限公司 用于mri的多通道rf体积共振器
DE102011080141B4 (de) * 2011-07-29 2015-08-27 Siemens Aktiengesellschaft Verfahren zur adaptiven Energieübertragung zu einem Lokalspulensystem
DE102011087915B4 (de) 2011-12-07 2015-04-09 Siemens Aktiengesellschaft Verfahren zur Überwachung der Patientenbelastung in einer Magnetresonanzeinrichtung
US20130178178A1 (en) * 2012-01-10 2013-07-11 Novatel Wireless, Inc. System and method for controlling power levels based on host identification
JP6147026B2 (ja) * 2013-02-27 2017-06-14 株式会社日立製作所 磁気共鳴イメージング装置、及び方法
RU2015143468A (ru) * 2013-03-13 2017-04-19 Конинклейке Филипс Н.В. Многоэлементная радиочастотная передающая катушка для магнитно-резонансной визуализации
US9945916B2 (en) * 2013-08-02 2018-04-17 Siemens Aktiengesellschaft Temperature monitoring of local coils
US20160313419A1 (en) * 2013-12-20 2016-10-27 Koninklijke Philips N.V. Radio frequency safety switch with adjustable switching level for mri systems
CN104224181B (zh) * 2014-09-26 2016-04-20 中国科学院生物物理研究所 一种多通道磁共振成像设备的sar实时监测系统及方法
JP6566465B2 (ja) * 2015-03-26 2019-08-28 国立大学法人広島大学 異常組織検出装置及び信号送受信方法
US10852374B2 (en) * 2015-12-03 2020-12-01 Koninklijke Philips N.V. Magnetic resonance (MR) system with increased wireless channel throughput and method of operation thereof
JP6611597B2 (ja) 2015-12-24 2019-11-27 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ｒｆコイル装置
CN108627783B (zh) 2017-03-23 2022-01-14 通用电气公司 射频线圈阵列及磁共振成像发射阵列
US10224974B2 (en) * 2017-03-31 2019-03-05 Microsoft Technology Licensing, Llc Proximity-independent SAR mitigation
EP3287805B1 (de) 2017-05-11 2019-06-26 Siemens Healthcare GmbH Sar sicherheits-vorrichtung und -verfahren zum erkennen von ent-verstimmung von mr antennenspulen.
DE102017208813A1 (de) * 2017-05-24 2018-11-29 Siemens Healthcare Gmbh Anpassung eines Parameters eines Parametersatzes für eine Magnetresonanz-Messung
CN107495967B (zh) * 2017-08-24 2020-06-19 上海联影医疗科技有限公司 射频能量沉积预测及控制方法、装置、系统及存储介质
CN108983134B (zh) * 2018-05-31 2020-07-03 上海东软医疗科技有限公司 信号接收通道校准方法和磁共振校准系统
KR102436951B1 (ko) * 2019-03-25 2022-08-26 프로맥소 인크. 단면 mri 시스템에서 체적 취득을 위한 시스템들 및 방법들
WO2021009253A1 (en) * 2019-07-15 2021-01-21 Emblation Limited Portable test apparatus and method of testing rf/microwave treatment system
CN114114111B (zh) * 2020-08-26 2024-02-20 西门子(深圳)磁共振有限公司 一种局部线圈、磁共振成像系统的功率控制系统和方法
US11716695B2 (en) * 2020-09-11 2023-08-01 Qualcomm Incorporated Exception-robust time-averaged radio frequency exposure compliance continuity
DE102021203029A1 (de) * 2021-03-26 2022-09-29 Siemens Healthcare Gmbh Überwachungsarchitektur für Magnetresonanz-Sendesysteme und Verfahren zum Betrieb

Family Cites Families (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4829554A (en) * 1985-01-31 1989-05-09 Harris Corporation Cellular mobile telephone system and method
GB8516537D0 (en) * 1985-06-29 1985-07-31 Standard Telephones Cables Ltd Pulsed plasma apparatus
JPS6411537A (en) * 1987-07-03 1989-01-17 Hitachi Ltd Mri apparatus
JPH01185253A (ja) * 1988-01-20 1989-07-24 Toshiba Corp 保護回路付き核磁気共鳴映像装置
JPH05237078A (ja) * 1992-02-29 1993-09-17 Shimadzu Corp Ｍｒ装置の励起パワー監視装置
JPH05317287A (ja) * 1992-05-14 1993-12-03 Toshiba Corp 磁気共鳴イメージング装置
FI92766C (fi) * 1993-04-14 1994-12-27 Nokia Telecommunications Oy Menetelmä ja laite antennin kunnon valvomiseksi
JP3506387B2 (ja) * 1993-06-22 2004-03-15 株式会社東芝 Ｍｒｉ装置
US5524275A (en) * 1993-12-17 1996-06-04 Ericsson Ge Mobile Communications Inc. Averaged RF exposure control
JPH07246194A (ja) * 1994-03-10 1995-09-26 Ge Yokogawa Medical Syst Ltd Ｍｒ装置
JPH09135199A (ja) * 1995-11-10 1997-05-20 Nec Corp アンテナアラーム検出方式
AUPN912096A0 (en) * 1996-04-04 1996-05-02 Garrick, Corinne Marie Jeanette Fire detector silenceable low battery pre-alarm
DE10157039A1 (de) 2001-11-21 2003-06-05 Philips Intellectual Property HF-Spulenanordnung für Magnetresonanz-Bildgerät
WO1998001946A1 (en) * 1996-07-05 1998-01-15 Clifford Harris Controller-based radio frequency amplifier module and method
FI963389A (fi) * 1996-08-30 1998-03-01 Nokia Mobile Phones Ltd Käsipuhelimen opastusjärjestelmä
DE69941557D1 (de) * 1998-01-15 2009-12-03 Regenesis Biomedical Inc Verbesserte vorrichtung zur behandlung mittels pulsierter elektromagnetischer energie
FR2780163B1 (fr) * 1998-06-18 2000-08-11 Agence Spatiale Europeenne Systeme de telescopie laser doppler incoherente
US6662018B1 (en) * 2000-06-28 2003-12-09 Northrop Grumman Corporation Analog power control system for a multi-carrier transmitter
JP3836309B2 (ja) * 2000-09-19 2006-10-25 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 コイル駆動方法、コイル駆動装置およびｍｒｉ装置
DE60026776T2 (de) * 2000-11-21 2007-03-29 Telefonaktiebolaget Lm Ericsson (Publ) Datenkompensierende Leistungsmessung
JP2002186595A (ja) * 2000-12-22 2002-07-02 Toshiba Corp 磁気共鳴診断装置および記憶媒体
US20050043726A1 (en) * 2001-03-07 2005-02-24 Mchale Anthony Patrick Device II
US6810239B2 (en) * 2001-04-05 2004-10-26 Motorola, Inc. Automated transmitter combiner monitoring system and method of using same
DE10153320B4 (de) * 2001-10-29 2006-08-31 Siemens Ag Verfahren und Vorrichtung zur Magnetresonanz-Bildgebung unter Einbeziehung der Leistungs-Historie
EP1345321A1 (de) * 2002-03-13 2003-09-17 Lucent Technologies Inc. Schaltung mit in parallel geschalteten Verstärkern, und Verfahren zur Reduzierung der Amplitudenabweichung zwischen Ausgangssignalen dieser Verstärker
TWI241108B (en) 2002-12-24 2005-10-01 Benq Corp Mobile phone capable of informing radiation power to user
CN1419355A (zh) * 2002-12-25 2003-05-21 北京邮电大学 密集波分复用光纤通信的波长、功率和信噪比的监测方法
WO2005001502A1 (en) 2003-06-30 2005-01-06 Koninklijke Philips Electronics N.V. Control of specific absorption rate (asr) in mri
AU2004277703A1 (en) * 2003-10-03 2005-04-14 Regents Of The University Of Minnesota Parallel transceiver for nuclear magnetic resonance system
US7053618B2 (en) * 2003-11-26 2006-05-30 General Electric Company Method and apparatus to generate an RF excitation consistent with a desired excitation profile using a transmit coil array
DE102004006550B4 (de) * 2004-02-10 2013-08-29 Siemens Aktiengesellschaft Verfahren zur Kontrolle eines Hochfrequenz-Leistungsverstärkers, Hochfrequenzeinrichtung, Hochfrequenz-Kontrolleinrichtung und Magnetresonanztomographiesystem
US7332960B2 (en) * 2004-07-08 2008-02-19 Amalfi Semiconductor, Inc. Method and apparatus for an improved power amplifier

Also Published As

Publication number Publication date
CN101171761B (zh) 2012-06-20
JP2009501553A (ja) 2009-01-22
CN101171761A (zh) 2008-04-30
US20080182524A1 (en) 2008-07-31
WO2006120589A2 (en) 2006-11-16
JP5329947B2 (ja) 2013-10-30
WO2006120589A3 (en) 2007-03-01
US8099059B2 (en) 2012-01-17
EP1878132A2 (de) 2008-01-16
EP1878132B1 (de) 2012-03-28

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