지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
The RF shimming technique has been used to improve the transmit RF field homogeneity in highfield MRI. In the RF shimming technique, the amplitude and phase of the driving currents in each coil element are optimized to get homogenous flip angle or uniform image intensity. The inductive and capacitive coupling between the coil elements may degrade the RF field homogeneity if not taken into account in the optimization procedure. In this paper, we have analyzed the coupling effects on the RF shimming using a sixteen-element TEM RF coil model operating at 300 MHz. We have found that the coupling effects on the RF shimming can be reduced by putting high dielectric material between the active rung and the shield.
목차
등록된 정보가 없습니다.
참고문헌 (8)
참고문헌 신청
Adriany G / 2005 / Transmit and receive transmission line arrays for 7 Tesla parallel imaging / Magn Reson Med 53 : 433 ~ 444
Bottomley P / 1978 / RF magnetic field penetration, phase shift and power dissipation in biological tissue: implications for NMR imaging / Phys Med Biol 23 : 630 ~ 643
Collins CM / 2005 / Combination of optimized transmit arrays and some receive array reconstruction methods can yield homogeneous images at very high freque- ncies / Magn Reso
Collins CM / 2007 / Array-optimized composite pulse for excellent whole brain homogeneity in high-field MRI / Magn Reson Med 57 : 470 ~ 474
Glover GH / 1985 / Comparison of linear and circular-polarization for magnetic-resonance imaging / J Magn Reson 64 : 255 ~ 270
Bottomley P / 1978 / RF magnetic field penetration, phase shift and power dissipation in biological tissue: implications for NMR imaging / Phys Med Biol 23 : 630 ~ 643
Collins CM / 2005 / Combination of optimized transmit arrays and some receive array reconstruction methods can yield homogeneous images at very high freque- ncies / Magn Reso
Collins CM / 2007 / Array-optimized composite pulse for excellent whole brain homogeneity in high-field MRI / Magn Reson Med 57 : 470 ~ 474
Glover GH / 1985 / Comparison of linear and circular-polarization for magnetic-resonance imaging / J Magn Reson 64 : 255 ~ 270
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