| 摘要 |
FIELD: measurement equipment.SUBSTANCE: invention relates to measurement equipment and represents an assembly unit of radio frequency coils for use in a magnetic resonance system. The unit comprises a radio frequency coil and circuits of detune, locking, displacement, multiplexing. The specified circuits comprise resistive memory elements, for every one of which one may select a resistive condition, and which preserve selected resistive conditions after disconnection of a control signal. The detune circuit comprises a resistive memory element that switches the radio frequency coil between the tuned and detuned conditions. The locking circuit connected between the radio frequency coil and the pre-amplifier comprises a resistive memory element to shorten the inlet of the pre-amplifier. The displacement circuit develops a control signal in order to set resistive memory elements of detune and locking circuits into the first resistive condition in process of the transmission mode and into the second resistive condition in process of the reception mode of the magnetic resonance system.EFFECT: multiplexing circuit comprises multiple resistive memory elements to selectively connect selected outlets of radio frequency coils with a receiver.15 cl, 2 dwg |
