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

doi:10.1109/TASC.2011.2162839

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

^*Corresponding author for this work

Institute and Undergraduate Program of Electro-Optical Engineering

Research output: Contribution to journal › Article › peer-review

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 ₃O_x (Bi-2223) tape high-T_c 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 language	English
Article number	6017104
Pages (from-to)	3574-3580
Number of pages	7
Journal	IEEE Transactions on Applied Superconductivity
Volume	21
Issue number	6
DOIs	https://doi.org/10.1109/TASC.2011.2162839
Publication status	Published - 2011 Dec

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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10.1109/TASC.2011.2162839

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

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.",

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author = "Lin, \{In Tsang\} and Yang, \{Hong Chang\} and Chen, \{Jyh Horng\}",

note = "Funding Information: Manuscript received January 29, 2011; revised May 30, 2011; accepted July 15, 2011. Date of publication September 12, 2011; date of current version December 2, 2011. This paper was recommended by Associate Editor M. Parizh. This work was supported by the National Health Research Institutes of Taiwan under Grant NHRI-EX100-10038.",

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N1 - Funding Information: Manuscript received January 29, 2011; revised May 30, 2011; accepted July 15, 2011. Date of publication September 12, 2011; date of current version December 2, 2011. This paper was recommended by Associate Editor M. Parizh. This work was supported by the National Health Research Institutes of Taiwan under Grant NHRI-EX100-10038.

PY - 2011/12

Y1 - 2011/12

N2 - 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.

AB - 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.

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

Abstract

Keywords

ASJC Scopus subject areas

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