JP2021514710A - マルチグラジエントエコーシーケンスを使用したディクソンｍｒイメージング - Google Patents

マルチグラジエントエコーシーケンスを使用したディクソンｍｒイメージング Download PDF

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JP2021514710A
JP2021514710A JP2020544217A JP2020544217A JP2021514710A JP 2021514710 A JP2021514710 A JP 2021514710A JP 2020544217 A JP2020544217 A JP 2020544217A JP 2020544217 A JP2020544217 A JP 2020544217A JP 2021514710 A JP2021514710 A JP 2021514710A
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map
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signal
imaging
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JPWO2019162198A5 (https=
JP2021514710A5 (https=
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ガブリエル マリアンヌ べック
ガブリエル マリアンヌ べック
ホルガー エガース
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
    • G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
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    • 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
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    • G01R33/24—Arrangements or instruments for measuring magnetic variables involving magnetic resonance for measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/243—Spatial mapping of the polarizing magnetic field
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    • G01R33/56527—Correction of image distortions, e.g. due to magnetic field inhomogeneities due to chemical shift effects
    • G—PHYSICS
    • G01—MEASURING; TESTING
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    • G—PHYSICS
    • G01—MEASURING; TESTING
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    • 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
    • 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]
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    • G—PHYSICS
    • G01—MEASURING; TESTING
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    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
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    • 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]
    • G01R33/5616—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 gradient refocusing, e.g. EPI
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    • 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
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    • G01R33/5676—Gating or triggering based on an MR signal, e.g. involving one or more navigator echoes for motion monitoring and correction

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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Health & Medical Sciences (AREA)
  • Radiology & Medical Imaging (AREA)
  • Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
JP2020544217A 2018-02-22 2019-02-15 マルチグラジエントエコーシーケンスを使用したディクソンｍｒイメージング Pending JP2021514710A (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP18158035.8A EP3531154A1 (en) 2018-02-22 2018-02-22 Dixon mr imaging using a multi-gradient-echo sequence
EP18158035.8 2018-02-22
PCT/EP2019/053754 WO2019162198A1 (en) 2018-02-22 2019-02-15 Dixon mr imaging using a multi-gradient-echo sequence

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JP2021514710A true JP2021514710A (ja) 2021-06-17
JPWO2019162198A5 JPWO2019162198A5 (https=) 2022-02-18
JP2021514710A5 JP2021514710A5 (https=) 2022-02-18

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US (1) US20210096202A1 (https=)
EP (1) EP3531154A1 (https=)
JP (1) JP2021514710A (https=)
CN (1) CN111758041A (https=)
DE (1) DE112019000927T8 (https=)
WO (1) WO2019162198A1 (https=)

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US11550013B2 (en) * 2020-09-30 2023-01-10 GE Precision Healthcare LLC Systems and methods of silent multi-gradient echo dynamic magnetic resonance imaging
EP4030178A1 (en) * 2021-01-14 2022-07-20 Koninklijke Philips N.V. Mr mammography
WO2022188026A1 (zh) * 2021-03-09 2022-09-15 深圳高性能医疗器械国家研究院有限公司 一种磁共振多参数定量方法及其应用
CN113281690B (zh) * 2021-05-18 2022-08-12 上海联影医疗科技股份有限公司 一种磁共振成像方法和系统
CN114217255B (zh) * 2021-11-29 2022-09-20 浙江大学 一种快速的肝脏多参数定量成像方法
CN117084658A (zh) * 2022-05-12 2023-11-21 深圳先进技术研究院 磁共振化学交换饱和转移成像方法、系统以及设备
EP4336203A1 (en) 2022-09-09 2024-03-13 Koninklijke Philips N.V. De-blurring and water/fat separation in mr imaging with spiral acquisition

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