RU2739479C2 - Магнитно-резонансная томография с разделением воды и жира по методу диксона - Google Patents

Магнитно-резонансная томография с разделением воды и жира по методу диксона Download PDF

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RU2739479C2
RU2739479C2 RU2018146906A RU2018146906A RU2739479C2 RU 2739479 C2 RU2739479 C2 RU 2739479C2 RU 2018146906 A RU2018146906 A RU 2018146906A RU 2018146906 A RU2018146906 A RU 2018146906A RU 2739479 C2 RU2739479 C2 RU 2739479C2
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echo signals
echo
pulses
magnetic field
signals
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RU2018146906A
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RU2018146906A3 (enExample
RU2018146906A (ru
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Хольгер ЭГГЕРС
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Конинклейке Филипс Н.В.
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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
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • 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
    • G01R33/561—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]
    • G01R33/5618—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 both RF and gradient refocusing, e.g. GRASE
    • 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
    • G01R33/56554—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by acquiring plural, differently encoded echo signals after one RF excitation, e.g. correction for readout gradients of alternating polarity in EPI
    • 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
    • G01R33/56563—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by a distortion of the main magnetic field B0, e.g. temporal variation of the magnitude or spatial inhomogeneity of B0

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  • Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
RU2018146906A 2016-06-02 2017-06-01 Магнитно-резонансная томография с разделением воды и жира по методу диксона RU2739479C2 (ru)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP16172658.3 2016-06-02
EP16172658 2016-06-02
PCT/EP2017/063326 WO2017207700A1 (en) 2016-06-02 2017-06-01 Dixon-type water/fat separation mr imaging

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RU2018146906A3 RU2018146906A3 (enExample) 2020-07-09
RU2018146906A RU2018146906A (ru) 2020-07-09
RU2739479C2 true RU2739479C2 (ru) 2020-12-24

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US (1) US11041926B2 (enExample)
EP (2) EP3465246B1 (enExample)
JP (2) JP7208796B2 (enExample)
CN (1) CN109219757B (enExample)
RU (1) RU2739479C2 (enExample)
WO (1) WO2017207700A1 (enExample)

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DE102018200900B4 (de) 2018-01-22 2023-02-02 Siemens Healthcare Gmbh Verfahren und Magnetresonanzanlage zur Artefaktvermeidung bei schnellen 3D Spinechosequenzen
EP3531154A1 (en) * 2018-02-22 2019-08-28 Koninklijke Philips N.V. Dixon mr imaging using a multi-gradient-echo sequence
EP3715896B1 (en) * 2019-03-27 2023-02-15 Siemens Healthcare GmbH Minimization of signal losses in multi-echo imaging
EP3792647A1 (en) * 2019-09-16 2021-03-17 Koninklijke Philips N.V. Dixon-type water/fat separation mr imaging
EP4012434A1 (en) * 2020-12-08 2022-06-15 Koninklijke Philips N.V. Dixon-type water/fat separation mr imaging
CN114820403B (zh) 2021-01-27 2025-04-29 西门子(深圳)磁共振有限公司 磁共振水脂图像分离方法、装置、成像系统及存储介质
EP4043902A1 (en) * 2021-02-11 2022-08-17 Koninklijke Philips N.V. Dixon-type water/fat separation mr imaging
CN115144801B (zh) * 2021-03-30 2025-08-19 西门子(深圳)磁共振有限公司 飞跃时间成像方法、装置及磁共振成像系统
EP4653904A1 (en) * 2024-05-21 2025-11-26 Koninklijke Philips N.V. Removal of free induction decay artifacts in turbo spin echo mri images

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US11041926B2 (en) 2021-06-22
JP2019522513A (ja) 2019-08-15
JP7208796B2 (ja) 2023-01-19
CN109219757B (zh) 2021-10-12
US20200319280A1 (en) 2020-10-08
EP4446765A3 (en) 2025-01-15
EP3465246A1 (en) 2019-04-10
RU2018146906A3 (enExample) 2020-07-09
EP3465246B1 (en) 2024-09-11
CN109219757A (zh) 2019-01-15
RU2018146906A (ru) 2020-07-09
JP2022169618A (ja) 2022-11-09
WO2017207700A1 (en) 2017-12-07
EP4446765A2 (en) 2024-10-16

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