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Mode splitter/combiner for noise figure minimization and control of power in RF coil arrays
专利权人:
George Randall Duensing
发明人:
George Randall Duensing
申请号:
US14240520
公开号:
US09448297B2
申请日:
2012.08.27
申请国别(地区):
US
年份:
2016
代理人:
摘要:
A magnetic resonance (MR) system (10) minimizes noise for modes of an array of coils (261, 262, . . . , 26n). The system (10) includes an array of coils (261, 262, . . . , 26n) in which the coils of the array (261, 262, . . . 26n) share impedances. A splitter/combiner (30) receives a plurality of signals (S1 S2, . . . , Sn) from each of the coils (261, 262, . . . , 26n) and converts the plurality of signals (S1 S2, . . . , Sn) to a plurality of signals (S1 S2, . . . , Sn) which are compensated for the shared impedance. The splitter/combiner (30) splits the received signals (S1 S2, . . . , Sn) into components and combines components of like frequency and/or phase to create the impedance compensated signals (S1 S2, . . . , Sn). Each impedance compensated signal is amplified by a corresponding preamplifier (381, 382, . . . , 38n).
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