원문정보
Study on fabricated RF coil using high-temperature superconductor tape and matching circuit for low field MRI system
초록
영어
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.
목차
1. 서론
2. 실험 방법
2.1. 표면 코일 제작 및 특성 평가
2.2. MRI system 및 image parameter
2.3. 영상 재구성 및 SNR 측정
3. 실험결과 및 고찰
4. 결론
참고문헌