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    • 3. 发明申请
    • METHOD FOR OPTIMIZATION OF A MULTI-CHANNEL COIL
    • 多通道线圈优化方法
    • WO2011029452A1
    • 2011-03-17
    • PCT/EP2009/006514
    • 2009-09-08
    • MAX-PLANCK-GESELLSCHAFT ZUR FÖRDERUNG DER WISSENSCHAFTEN E. V.KOZLOV, MikhailTURNER, Robert
    • KOZLOV, MikhailTURNER, Robert
    • G01R33/3415G01R33/36
    • G01R33/3628G01R33/3415G01R33/3642G01R33/5659
    • The invention relates to a method for optimization of the performance of a multi-channel coil (1) comprising at least three coil elements, wherein the method comprises the following steps: a) Exciting the coil elements of the multi-channel coil (1) by electrical power signals comprising a specific power, wherein the power of the power signals is partially reflected by the coil elements of the multi-channel coil (1), b) Measuring the power which is reflected by the individual coil elements of the multi-channel coil (1) or by the entire multi-channel coil (1) during excitation of the coil elements, c) Tuning the multi-channel coil (1) depending on the measured reflected power so that the performance of the multi-channel coil (1) is improved, wherein d) all coil elements of the multi-channel coil (1) are simultaneously excited, and e) the reflected power is measured during the simultaneous excitation of all coil elements of the multi-channel coil (1).
    • 本发明涉及一种用于优化包括至少三个线圈元件的多通道线圈(1)的性能的方法,其中该方法包括以下步骤:a)激励多通道线圈(1)的线圈元件, 通过包括特定功率的电功率信号,其中功率信号的功率被多通道线圈(1)的线圈元件部分地反射,b)测量由多通道线圈(1)的各个线圈元件反射的功率, 通道线圈(1)或整个多通道线圈(1)的激励期间,c)根据所测量的反射功率调谐多通道线圈(1),使得多通道线圈 (1)得到改善,其中d)多通道线圈(1)的所有线圈元件被同时激励,e)在多通道线圈(1)的所有线圈元件的同时激励期间测量反射功率, 。
    • 5. 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。