한국초전도ㆍ저온공학회논문지 (Progress in Superconductivity and Cryogenics)

  • 제14권1호
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  • Pages.44-47
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  • 2012
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  • 1229-3008(pISSN)
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  • 2287-6251(eISSN)
한국초전도저온학회 (The Korean Society of Superconductivity and Cryogenics)
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고온초전도 선재와 정합회로를 이용한 RF coil 제작에 대한 기초연구

Study on fabricated RF coil using high-temperature superconductor tape and matching circuit for low field MRI system

  • 김동혁 (인제대 대학원 의용공학과) ;
  • 고락길 (한국전기연구원 초전도연구센터) ;
  • 강부민 (한국전기연구원 초전도연구센터) ;
  • 하동우 (한국전기연구원 초전도연구센터) ;
  • 손명환 (한국전기연구원 초전도연구센터) ;
  • 문치웅 (인제대 의용공학과)
  • 투고 : 2012.02.03
  • 심사 : 2012.03.21
  • 발행 : 2012.03.31
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초록

The substantial improvement of the signal-to-noise ratio (SNR) can be achieved with small-size samples or low-field MRI system by high-temperature superconducting(HTS) RF coil. The typical HTS RF coil made of HTS thin film is expensive and is limited the coil geometry to planar surface coil. In this study, commercial Bi-2223 HTS tapes was used as RF coil for a 0.35T permanent MRI system. It has advantages of both much lower cost and easier fabrication over HTS thin film coil. SNR gain of the image obtained from the HTS RF coil over a conventional Cu RF coil at room temperature was about 2.4-fold and 1.9-fold using the spin echo pulse sequence and gradient echo pulse sequence respectively.

키워드

참고문헌

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