CN102445676A - 对梯度线圈工作感应的磁场漂移进行建模的系统及方法 - Google Patents

对梯度线圈工作感应的磁场漂移进行建模的系统及方法 Download PDF

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Publication number
CN102445676A
CN102445676A CN2010106251378A CN201010625137A CN102445676A CN 102445676 A CN102445676 A CN 102445676A CN 2010106251378 A CN2010106251378 A CN 2010106251378A CN 201010625137 A CN201010625137 A CN 201010625137A CN 102445676 A CN102445676 A CN 102445676A
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China
Prior art keywords
drift
computer
programmed
pulse sequence
magnetic field
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Pending
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CN2010106251378A
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English (en)
Chinese (zh)
Inventor
T·K·基丹
T·J·哈文斯
江隆植
M·H·哈查图里安
张震宇
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General Electric Co
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General Electric Co
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Publication of CN102445676A publication Critical patent/CN102445676A/zh
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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
    • G01R33/44—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
    • G01R33/56518—Correction of image distortions, e.g. due to magnetic field inhomogeneities due to eddy currents, e.g. caused by switching of the gradient magnetic field
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
    • A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
    • 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
    • G01R33/387—Compensation of inhomogeneities
    • G01R33/3873—Compensation of inhomogeneities using ferromagnetic bodies ; Passive shimming

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  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Pathology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Biomedical Technology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Signal Processing (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
CN2010106251378A 2010-10-05 2010-12-27 对梯度线圈工作感应的磁场漂移进行建模的系统及方法 Pending CN102445676A (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/897831 2010-10-05
US12/897,831 US8362773B2 (en) 2010-10-05 2010-10-05 System and method for modeling gradient coil operation induced magnetic field drift

Publications (1)

Publication Number Publication Date
CN102445676A true CN102445676A (zh) 2012-05-09

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CN2010106251378A Pending CN102445676A (zh) 2010-10-05 2010-12-27 对梯度线圈工作感应的磁场漂移进行建模的系统及方法

Country Status (4)

Country Link
US (1) US8362773B2 (https=)
JP (1) JP5819141B2 (https=)
CN (1) CN102445676A (https=)
DE (1) DE102010061568A1 (https=)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107110937A (zh) * 2014-12-30 2017-08-29 通用电气公司 用于有功负载阻抗监控的方法和装置
CN107624162A (zh) * 2015-05-12 2018-01-23 皇家飞利浦有限公司 具有场探头的磁共振检查系统
CN110850344A (zh) * 2018-08-21 2020-02-28 西门子医疗有限公司 操作mri装置的方法
CN112824921A (zh) * 2019-11-20 2021-05-21 上海联影医疗科技股份有限公司 磁共振场飘补偿方法、调节方法、场飘补偿系统以及磁共振系统

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8362773B2 (en) * 2010-10-05 2013-01-29 General Electric Company System and method for modeling gradient coil operation induced magnetic field drift
CN103760981B (zh) * 2014-01-21 2017-01-04 北京师范大学 一种磁场可视化及交互方法
DE102015205150A1 (de) 2015-03-23 2016-09-29 Siemens Healthcare Gmbh Verfahren zur Korrektur von durch den Betrieb von Gradientenspulen auftretenden Feldstörungen höherer Ordnung und Magnetresonanzeinrichtung
DE102015222114A1 (de) * 2015-11-10 2017-05-11 Siemens Healthcare Gmbh Verfahren zum Ansteuern einer Shimeinheit, Steuereinheit und Magnetresonanzgerät
US11337610B2 (en) * 2018-10-01 2022-05-24 Siemens Healthcare Gmbh Temperature measurement in thermal therapy

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6456073B2 (en) * 2000-04-07 2002-09-24 Ge Medical Systems Global Technology Company, Llc Data acquisition method of compensation for magnetic field drift, method of compensation for magnetic field drift, and MRI apparatus
US6552539B2 (en) * 2001-04-04 2003-04-22 Ge Medical Systems Global Technology Company, Llc Method of correcting resonance frequency variation and MRI apparatus
US7141974B2 (en) * 2003-08-25 2006-11-28 William A Edelstein Active-passive electromagnetic shielding to reduce MRI acoustic noise
US7375526B2 (en) * 2006-10-20 2008-05-20 Edelstein William A Active-passive electromagnetic shielding to reduce MRI acoustic noise
US20100164495A1 (en) * 2007-06-14 2010-07-01 Masahiro Takizawa Magnetic resonance imaging apparatus and method for correcting error due to gradient magnetic field

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010054898A1 (en) * 1999-03-10 2001-12-27 Andrew Li Magnetic resonance imaging compensated for very rapid variations in static magnetic field
JP2002224083A (ja) * 2001-02-06 2002-08-13 Hitachi Medical Corp 磁気共鳴画像診断装置
US7251520B2 (en) * 2003-07-08 2007-07-31 General Electric Company Method and apparatus of slice selective magnetization preparation for moving table MRI
US8362773B2 (en) * 2010-10-05 2013-01-29 General Electric Company System and method for modeling gradient coil operation induced magnetic field drift

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6456073B2 (en) * 2000-04-07 2002-09-24 Ge Medical Systems Global Technology Company, Llc Data acquisition method of compensation for magnetic field drift, method of compensation for magnetic field drift, and MRI apparatus
US6552539B2 (en) * 2001-04-04 2003-04-22 Ge Medical Systems Global Technology Company, Llc Method of correcting resonance frequency variation and MRI apparatus
US7141974B2 (en) * 2003-08-25 2006-11-28 William A Edelstein Active-passive electromagnetic shielding to reduce MRI acoustic noise
US7375526B2 (en) * 2006-10-20 2008-05-20 Edelstein William A Active-passive electromagnetic shielding to reduce MRI acoustic noise
US20100164495A1 (en) * 2007-06-14 2010-07-01 Masahiro Takizawa Magnetic resonance imaging apparatus and method for correcting error due to gradient magnetic field

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107110937A (zh) * 2014-12-30 2017-08-29 通用电气公司 用于有功负载阻抗监控的方法和装置
CN107624162A (zh) * 2015-05-12 2018-01-23 皇家飞利浦有限公司 具有场探头的磁共振检查系统
CN107624162B (zh) * 2015-05-12 2020-07-07 皇家飞利浦有限公司 具有场探头的磁共振检查系统
CN110850344A (zh) * 2018-08-21 2020-02-28 西门子医疗有限公司 操作mri装置的方法
CN112824921A (zh) * 2019-11-20 2021-05-21 上海联影医疗科技股份有限公司 磁共振场飘补偿方法、调节方法、场飘补偿系统以及磁共振系统

Also Published As

Publication number Publication date
JP5819141B2 (ja) 2015-11-18
JP2012075865A (ja) 2012-04-19
US8362773B2 (en) 2013-01-29
DE102010061568A1 (de) 2012-04-05
US20120082357A1 (en) 2012-04-05

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Application publication date: 20120509