NL1027583C2 - Werkwijze en toestel voor het reduceren van RF-energieneerslag tijdens MR-gegevensverwerving. - Google Patents

Werkwijze en toestel voor het reduceren van RF-energieneerslag tijdens MR-gegevensverwerving. Download PDF

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Publication number
NL1027583C2
NL1027583C2 NL1027583A NL1027583A NL1027583C2 NL 1027583 C2 NL1027583 C2 NL 1027583C2 NL 1027583 A NL1027583 A NL 1027583A NL 1027583 A NL1027583 A NL 1027583A NL 1027583 C2 NL1027583 C2 NL 1027583C2
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Netherlands
Prior art keywords
computer
excitation
coil
storage medium
readable storage
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NL1027583A
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English (en)
Dutch (nl)
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NL1027583A1 (nl
Inventor
Yudong Zhu
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Gen Electric
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Publication of NL1027583A1 publication Critical patent/NL1027583A1/nl
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Publication of NL1027583C2 publication Critical patent/NL1027583C2/nl

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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
    • G01R33/561—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
    • G01R33/5611—Parallel magnetic resonance imaging, e.g. sensitivity encoding [SENSE], simultaneous acquisition of spatial harmonics [SMASH], unaliasing by Fourier encoding of the overlaps using the temporal dimension [UNFOLD], k-t-broad-use linear acquisition speed-up technique [k-t-BLAST], k-t-SENSE
    • 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
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G01R33/341—Constructional details, e.g. resonators, specially adapted to MR comprising surface coils
    • G01R33/3415—Constructional details, e.g. resonators, specially adapted to MR comprising surface coils comprising arrays of sub-coils, i.e. phased-array coils with flexible receiver channels
    • 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
    • G01R33/5611—Parallel magnetic resonance imaging, e.g. sensitivity encoding [SENSE], simultaneous acquisition of spatial harmonics [SMASH], unaliasing by Fourier encoding of the overlaps using the temporal dimension [UNFOLD], k-t-broad-use linear acquisition speed-up technique [k-t-BLAST], k-t-SENSE
    • G01R33/5612—Parallel RF transmission, i.e. RF pulse transmission using a plurality of independent transmission channels
    • 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
    • G01R33/288—Provisions within MR facilities for enhancing safety during MR, e.g. reduction of the specific absorption rate [SAR], detection of ferromagnetic objects in the scanner room

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  • Physics & Mathematics (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)
  • High Energy & Nuclear Physics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
NL1027583A 2003-11-26 2004-11-24 Werkwijze en toestel voor het reduceren van RF-energieneerslag tijdens MR-gegevensverwerving. NL1027583C2 (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/723,311 US6989673B2 (en) 2003-11-26 2003-11-26 Method and apparatus to reduce RF power deposition during MR data acquisition
US72331103 2003-11-26

Publications (2)

Publication Number Publication Date
NL1027583A1 NL1027583A1 (nl) 2005-05-27
NL1027583C2 true NL1027583C2 (nl) 2007-11-27

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NL1027583A NL1027583C2 (nl) 2003-11-26 2004-11-24 Werkwijze en toestel voor het reduceren van RF-energieneerslag tijdens MR-gegevensverwerving.

Country Status (4)

Country Link
US (2) US6989673B2 (enExample)
JP (1) JP4897212B2 (enExample)
DE (1) DE102004057310A1 (enExample)
NL (1) NL1027583C2 (enExample)

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Also Published As

Publication number Publication date
US20050134267A1 (en) 2005-06-23
JP4897212B2 (ja) 2012-03-14
JP2005152655A (ja) 2005-06-16
US6989673B2 (en) 2006-01-24
US20050110487A1 (en) 2005-05-26
US7075301B2 (en) 2006-07-11
DE102004057310A1 (de) 2005-07-21
NL1027583A1 (nl) 2005-05-27

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