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Woo et al., 2020 - Google Patents

Comparison of 16-channel asymmetric sleeve antenna and dipole antenna transceiver arrays at 10.5 Tesla MRI

Woo et al., 2020

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Document ID
12184302265493595430
Author
Woo M
Delabarre L
Waks M
Lee J
Lagore R
Jungst S
Grant A
Eryaman Y
Ugurbil K
Adriany G
Publication year
Publication venue
IEEE transactions on medical imaging

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Snippet

Multi-element transmit arrays with low peak 10 g specific absorption rate (SAR) and high SAR efficiency (defined as (\B 1+/√\peak SAR\10g) are essential for ultra-high field (UHF) magnetic resonance imaging (MRI) applications. Recently, the adaptation of dipole …
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    • G01R33/20Arrangements or instruments for measuring magnetic variables involving magnetic resonance
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    • G01R33/561Image 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
    • G01R33/5611Parallel 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
    • G01R33/5612Parallel RF transmission, i.e. RF pulse transmission using a plurality of independent transmission channels
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    • G01R33/3642Mutual coupling or decoupling of multiple coils, e.g. decoupling of a receive coil from a transmission coil, or intentional coupling of RF coils, e.g. for RF magnetic field amplification
    • G01R33/365Decoupling of multiple RF coils wherein the multiple RF coils have the same function in MR, e.g. decoupling of a receive coil from another receive coil in a receive coil array, decoupling of a transmission coil from another transmission coil in a transmission coil array
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    • G01R33/341Constructional details, e.g. resonators, specially adapted to MR comprising surface coils
    • G01R33/3415Constructional details, e.g. resonators, specially adapted to MR comprising surface coils comprising arrays of sub-coils, i.e. phased-array coils with fileiple receiver channels
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    • G01R33/38Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
    • G01R33/385Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils
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    • G01R33/288Provisions 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
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QAERIALS
    • H01Q1/00Details of, or arrangements associated with, aerials

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