A 40-mm high-temperature superconducting surface resonator in a 3-T MRI system: Simulations and measurements

In Tsang Lin, Hong Chang Yang, Jyh Horng Chen

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2 Citations (Scopus)

Abstract

In this paper, the Ansoft high-frequency structure simulation (HFSS) was adapted to investigate the unloaded quality-factor value of the radio-frequency (RF) receiving resonator. This paper focused on the materials aspects, and a comparison between electromagnetic stimulations and measurement was conducted. A 40 mm in diameter Bi2Sr2Ca2Cu 3Ox (Bi-2223) tape high-Tc superconducting RF resonator in 3 T was stimulated and built. The simulation models were established according to the experimental dimension of the Bi-2223 surface resonator. Measurements show that the Bi-2223 surface resonator at 77 K provides a gain of 3.84-fold signal-to-noise ratio on phantom images over that of the homemade copper resonator at 300 K. Measuring results were in accordance with predicted ones, and the difference between the predicted SNR gains and measured SNR gains is 1%. This paper suggests that using a Bi-2223 surface resonator at 77 K could be more useful for magnetic resonance imaging coils than a copper surface resonator at 300 K.

Original languageEnglish
Article number6017104
Pages (from-to)3574-3580
Number of pages7
JournalIEEE Transactions on Applied Superconductivity
Volume21
Issue number6
DOIs
Publication statusPublished - 2011 Dec 1

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Keywords

  • BiSr CaCu O (Bi-2223)
  • high-frequency structure simulation (HFSS)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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