JP7208796B2 - ディクソン法による水／脂肪分離を用いたｍｒ撮像 - Google Patents

ディクソン法による水／脂肪分離を用いたｍｒ撮像 Download PDF

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JP7208796B2
JP7208796B2 JP2018562622A JP2018562622A JP7208796B2 JP 7208796 B2 JP7208796 B2 JP 7208796B2 JP 2018562622 A JP2018562622 A JP 2018562622A JP 2018562622 A JP2018562622 A JP 2018562622A JP 7208796 B2 JP7208796 B2 JP 7208796B2
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echo signals
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pulses
refocusing
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JP2019522513A (ja
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ホルガー エガース
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Koninklijke Philips NV
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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)
JP2018562622A 2016-06-02 2017-06-01 ディクソン法による水／脂肪分離を用いたｍｒ撮像 Active JP7208796B2 (ja)

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

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JP2022169618A (ja) * 2016-06-02 2022-11-09 コーニンクレッカ フィリップス エヌ ヴェ ディクソン法による水／脂肪分離を用いたｍｒ撮像

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JP2020522562A (ja) * 2017-06-06 2020-07-30 ストキューブ アンド シーオー．， インコーポレイテッド Ｂｔｎ１ａ１又はｂｔｎ１ａ１リガンドに結合する抗体及び分子を用いて癌を治療する方法
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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JP2022169618A (ja) * 2016-06-02 2022-11-09 コーニンクレッカ フィリップス エヌ ヴェ ディクソン法による水／脂肪分離を用いたｍｒ撮像

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US11041926B2 (en) 2021-06-22
JP2019522513A (ja) 2019-08-15
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
RU2739479C2 (ru) 2020-12-24
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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