A geometrically adjustable 16-channel transmit/receive transmission line array for improved RF efficiency and parallel imaging performance at 7 Tesla

Gregor Adriany, Pierre Francois Van De Moortele, Johannes Ritter, Steen Moeller, Edward J. Auerbach, Can Akgün, Carl J. Snyder, Thomas Vaughan, Kâmil Uǧurbil

Research output: Contribution to journalArticle

139 Citations (Scopus)

Abstract

A novel geometrically adjustable transceiver array system is presented. A key feature of the geometrically adjustable array was the introduction of decoupling capacitors that allow for automatic change in capacitance dependent on neighboring resonant element distance. The 16-element head array version of such an adjustable coil based on transmission line technology was compared to fixed geometry transmission line arrays (TLAs) of various sizes at 7T. The focus of this comparison was on parallel imaging performance, RF transmit efficiency, and signal-to-noise ratio (SNR). Significant gains in parallel imaging performance and SNR were observed for the new coil and attributed to its adjustability and to the design of the individual elements with a three-sided ground plane.

Original languageEnglish (US)
Pages (from-to)590-597
Number of pages8
JournalMagnetic resonance in medicine
Volume59
Issue number3
DOIs
StatePublished - Mar 1 2008

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Signal-To-Noise Ratio
Head
Technology

Keywords

  • 7T
  • Flexible array coil
  • High-field MRI
  • Parallel imaging
  • RF coil design
  • Transmission line coil
  • Transmit array coil

Cite this

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abstract = "A novel geometrically adjustable transceiver array system is presented. A key feature of the geometrically adjustable array was the introduction of decoupling capacitors that allow for automatic change in capacitance dependent on neighboring resonant element distance. The 16-element head array version of such an adjustable coil based on transmission line technology was compared to fixed geometry transmission line arrays (TLAs) of various sizes at 7T. The focus of this comparison was on parallel imaging performance, RF transmit efficiency, and signal-to-noise ratio (SNR). Significant gains in parallel imaging performance and SNR were observed for the new coil and attributed to its adjustability and to the design of the individual elements with a three-sided ground plane.",
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AU - Adriany, Gregor

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AU - Ritter, Johannes

AU - Moeller, Steen

AU - Auerbach, Edward J.

AU - Akgün, Can

AU - Snyder, Carl J.

AU - Vaughan, Thomas

AU - Uǧurbil, Kâmil

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