NL1027583A1 - 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.

Info

Publication number
NL1027583A1
NL1027583A1 NL1027583A NL1027583A NL1027583A1 NL 1027583 A1 NL1027583 A1 NL 1027583A1 NL 1027583 A NL1027583 A NL 1027583A NL 1027583 A NL1027583 A NL 1027583A NL 1027583 A1 NL1027583 A1 NL 1027583A1
Authority
NL
Netherlands
Prior art keywords
reducing
data acquisition
precipitation during
energy precipitation
energy
Prior art date
Application number
NL1027583A
Other languages
English (en)
Other versions
NL1027583C2 (nl
Inventor
Yudong Zhu
Original Assignee
Gen Electric
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gen Electric filed Critical Gen Electric
Publication of NL1027583A1 publication Critical patent/NL1027583A1/nl
Application granted granted Critical
Publication of NL1027583C2 publication Critical patent/NL1027583C2/nl

Links

Classifications

    • 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

Landscapes

  • 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 true NL1027583A1 (nl) 2005-05-27
NL1027583C2 NL1027583C2 (nl) 2007-11-27

Family

ID=34592230

Family Applications (1)

Application Number Title Priority Date Filing Date
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 (nl)
JP (1) JP4897212B2 (nl)
DE (1) DE102004057310A1 (nl)
NL (1) NL1027583C2 (nl)

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Also Published As

Publication number Publication date
JP4897212B2 (ja) 2012-03-14
US6989673B2 (en) 2006-01-24
US20050134267A1 (en) 2005-06-23
JP2005152655A (ja) 2005-06-16
NL1027583C2 (nl) 2007-11-27
US20050110487A1 (en) 2005-05-26
US7075301B2 (en) 2006-07-11
DE102004057310A1 (de) 2005-07-21

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