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    • 9. 发明申请
    • A METHOD FOR MULTI-MODE, MULTI-LOAD, AND MULTI-DOMAIN OPTIMIZATION OF A MULTI-CHANNEL NEAR-FIELD RF TRANSMITTER
    • 一种用于多通道近场RF发射机的多模,多负载和多域优化的方法
    • WO2013135251A1
    • 2013-09-19
    • PCT/EP2012/001144
    • 2012-03-14
    • MAX-PLANCK-GESELLSCHAFT ZUR FÖRDERUNG DER WISSENSCHAFTEN E. V.KOZLOV, MikhailTURNER, Robert
    • KOZLOV, MikhailTURNER, Robert
    • G01R33/561
    • G01R33/54G01R33/3607G01R33/5612
    • The invention relates to a method for optimization of a performance of a multi-channel transmitter comprising several transmit elements, particularly in a magnetic resonance imaging device, wherein the method comprises the following steps: (a) Exciting the transmit elements of the multi-channel transmitter by electric excitation signals comprising a specific power, wherein the power of the excitation signals is partially reflected by the transmit elements of the multichannel transmitter, (b) Determining a reflected power which is reflected by the multi-channel transmitter during excitation of the transmit elements, (c) Determining reflection coefficients S xx of the multi-channel transmitter, (d) Determining reflection coefficients S xy of the multi-channel transmitter, (e) Calculating a performance criterion representing the performance of the multi-channel transmitter, wherein the performance criterion is based on el) the reflected power and e2) the reflection coefficients S xx and e3) the reflection coefficients S xy , (f) Tuning the multi-channel transmitter so that the performance criterion is optimized.
    • 本发明涉及一种用于优化包括几个发射元件的多信道发射机的性能的方法,特别是在磁共振成像设备中,其中该方法包括以下步骤:(a)激发多信道的发射元件 发射机通过包括特定功率的电激励信号,其中所述激励信号的功率被所述多信道发射机的发射元件部分地反射,(b)确定所述多信道发射机在所述发射激励期间反射的反射功率 (c)确定多声道发射机的反射系数Sxx,(d)确定多声道发射机的反射系数Sxy,(e)计算表示多声道发射机性能的性能标准,其中性能 标准基于el)反射功率和e2)反射系数Sxx和e3) 反射系数Sxy,(f)调谐多通道发射机,使性能标准得到优化。