CN116940856A - 狄克逊型水/脂肪分离mr成像 - Google Patents

狄克逊型水/脂肪分离mr成像 Download PDF

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Publication number
CN116940856A
CN116940856A CN202280014568.1A CN202280014568A CN116940856A CN 116940856 A CN116940856 A CN 116940856A CN 202280014568 A CN202280014568 A CN 202280014568A CN 116940856 A CN116940856 A CN 116940856A
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CN
China
Prior art keywords
magnetic field
acquisition
echo
field gradients
pulses
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.)
Pending
Application number
CN202280014568.1A
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English (en)
Chinese (zh)
Inventor
H·埃格斯
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.)
Koninklijke Philips NV
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Koninklijke Philips NV
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Filing date
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Application filed by Koninklijke Philips NV filed Critical Koninklijke Philips NV
Publication of CN116940856A publication Critical patent/CN116940856A/zh
Pending legal-status Critical Current

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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
    • G01R33/4828—Resolving the MR signals of different chemical species, e.g. water-fat 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
    • G01R33/385—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils
    • 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
    • G01R33/50—NMR imaging systems based on the determination of relaxation times, e.g. T1 measurement by IR sequences; T2 measurement by multiple-echo 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
    • G01R33/543—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
    • G01R33/54—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
    • G01R33/5608—Data processing and visualization specially adapted for MR, e.g. for feature analysis and pattern recognition on the basis of measured MR data, segmentation of measured MR data, edge contour detection on the basis of measured MR data, for enhancing measured MR data in terms of signal-to-noise ratio by means of noise filtering or apodization, for enhancing measured MR data in terms of resolution by means for deblurring, windowing, zero filling, or generation of gray-scaled images, colour-coded images or images displaying vectors instead of pixels
    • 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
    • G01R33/5615—Echo train techniques involving acquiring plural, differently encoded, echo signals after one RF excitation, e.g. using gradient refocusing in echo planar imaging [EPI], RF refocusing in rapid acquisition with relaxation enhancement [RARE] or using both RF and gradient refocusing in gradient and spin echo imaging [GRASE]
    • G01R33/5617—Echo train techniques involving acquiring plural, differently encoded, echo signals after one RF excitation, e.g. using gradient refocusing in echo planar imaging [EPI], RF refocusing in rapid acquisition with relaxation enhancement [RARE] or using both RF and gradient refocusing in gradient and spin echo imaging [GRASE] using RF refocusing, e.g. RARE
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Artificial Intelligence (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
CN202280014568.1A 2021-02-11 2022-02-08 狄克逊型水/脂肪分离mr成像 Pending CN116940856A (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP21156561.9 2021-02-11
EP21156561.9A EP4043902A1 (en) 2021-02-11 2021-02-11 Dixon-type water/fat separation mr imaging
PCT/EP2022/052981 WO2022171608A1 (en) 2021-02-11 2022-02-08 Dixon-type water/fat separation mr imaging

Publications (1)

Publication Number Publication Date
CN116940856A true CN116940856A (zh) 2023-10-24

Family

ID=74591856

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202280014568.1A Pending CN116940856A (zh) 2021-02-11 2022-02-08 狄克逊型水/脂肪分离mr成像

Country Status (5)

Country Link
US (1) US12360188B2 (https=)
EP (2) EP4043902A1 (https=)
JP (1) JP2024506575A (https=)
CN (1) CN116940856A (https=)
WO (1) WO2022171608A1 (https=)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12287385B2 (en) * 2022-04-22 2025-04-29 GE Precision Healthcare LLC Systems and methods of noise reduction in magnetic resonance images
CN116823706A (zh) * 2023-02-03 2023-09-29 上海科技大学 用于磁共振成像的水脂分离方法、系统及终端
CN116299107A (zh) * 2023-03-30 2023-06-23 厦门大学 基于重叠回波的磁共振快速水脂分离定量成像方法及系统

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7112965B2 (en) * 2004-04-30 2006-09-26 University Of Basel Low-impact noise acquisition magnetic resonance imaging
WO2009074918A1 (en) * 2007-12-11 2009-06-18 Koninklijke Philips Electronics N.V. Acoustic noise reduction in mri
US8030920B2 (en) * 2009-06-03 2011-10-04 General Electric Company Method and system for modifying pulse sequences
US8508225B2 (en) * 2010-11-10 2013-08-13 The Board Of Trustees Of The Leland Stanford Junior University T2-weighted and diffusion-weighted imaging using fast acquisition with double echo (FADE)
DE102013202559B3 (de) 2013-02-18 2014-08-21 Siemens Aktiengesellschaft Optimierung einer MR-Pulssequenz durch automatisches Optimieren von Gradientenpulsen in veränderbaren Intervallen
US10132889B2 (en) 2013-05-22 2018-11-20 General Electric Company System and method for reducing acoustic noise level in MR imaging
DE102013218475B4 (de) 2013-09-16 2015-10-22 Siemens Aktiengesellschaft Geräuschsoptimierung einer Magnetresonanz-Sequenz durch Anhebung einer Pulsbandweite
DE102014202649B4 (de) 2014-02-13 2015-12-10 Siemens Aktiengesellschaft Leise MR-Bildgebung durch eine variable Anzahl von Pulssequenzabschnitten zwischen zwei Vorpulsen
US9945919B2 (en) 2014-10-09 2018-04-17 Siemens Healthcare Gmbh Systems and methods for real time gradient timing modification
JP6590514B2 (ja) * 2015-05-07 2019-10-16 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
CN107923958B (zh) * 2015-06-26 2020-06-23 皇家飞利浦有限公司 相位校正的狄克逊磁共振成像
JP6431464B2 (ja) * 2015-10-07 2018-11-28 株式会社日立製作所 磁気共鳴イメージング装置の傾斜磁場波形調整方法、および、磁気共鳴イメージング装置
JP2017140182A (ja) * 2016-02-09 2017-08-17 株式会社日立製作所 磁気共鳴イメージング装置、方法及び検査プロトコル実装プログラム
EP4446765A3 (en) * 2016-06-02 2025-01-15 Koninklijke Philips N.V. Dixon-type water-fat separation mr imaging
US10175317B2 (en) * 2016-06-10 2019-01-08 Toshiba Medical Systems Corporation Quiet MRI using alternating gradient sequence
US10429463B2 (en) * 2016-06-13 2019-10-01 Toshiba Medical Systems Corporation Quiet MRI with spin echo (SE) or fast spin echo (FSE)
EP3511725A1 (en) 2018-01-11 2019-07-17 Koninklijke Philips N.V. Dual resolution dixon magnetic resonance imaging
US11353527B2 (en) * 2019-07-19 2022-06-07 Shanghai United Imaging Healthcare Co., Ltd. Systems and methods for waveform determination in magnetic resonance imaging
WO2021026143A1 (en) * 2019-08-06 2021-02-11 Hi Llc Systems and methods having an optical magnetometer array with beam splitters

Also Published As

Publication number Publication date
JP2024506575A (ja) 2024-02-14
US20240094320A1 (en) 2024-03-21
EP4291913B1 (en) 2026-04-08
WO2022171608A1 (en) 2022-08-18
EP4291913A1 (en) 2023-12-20
US12360188B2 (en) 2025-07-15
EP4043902A1 (en) 2022-08-17

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