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Simulation Analysis on Quality Factor of RF Receiving Coil for an MRI System

Simulation Analysis on Quality Factor of RF Receiving Coil f...

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2009中国控制与决策会议

作者： Wu Chunli~1,Bai Zhiming~2,Xiao Jingkui~3,Wang Jinxing~2 1.School of Information Science & Engineering,Northeastern University,Shenyang 110004,China 2.School of Sciences,Northeastern University,Shenyang 110004,China 3.School of Sciences,Shenyang University,Shenyang 110016,China

Radio frequency(RF) receiving coil is an important element for the signal collection for magnetic resonance imaging(MRI) *** factor(Q) of the RF receiving coil is a crucial parameter impacting the signal-to-noise ratio(SNR) and imaging quality of an MRI *** quality factor Q value of conventional copper receiving coil has achieved a *** superconducting material as the resonance loop of receiving coil can decrease the equivalent resistance and enhance the quality *** this study,high frequency electromagnetism simulation software Ansoft HFSS was adopted to investigate the Q value of the RF receiving *** to the experiment dimension of the Bi2223 and MgB superconducting receiving coil,the simulation models were established,the frequency characteristic curves of the resonance loop were simulated and compared with the the same size copper *** study indicates that using superconducting material as RF receiving coil can efficiently enhance the quality factor for a low field MRI system, thus improve the SNR and imaging quality of an MRI *** research results are significant to the application of the high temperature superconductor in modern medical field.

关键词： Magnetic resonance Imaging(MRI) RF Receiving Coil Superconducting material Quality factor resonance loop

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