Patent ID: 9146288
Filing Date: 2015-09-29
Classification: G01R

Abstract:
1. A method for implementing a switching between a body coil and a head coil in a nuclear magnetic resonance imaging system, wherein the nuclear magnetic resonance imaging system comprises the body coil, the head coil and a power amplifier component, wherein the power amplifier component comprises: a plurality of sets of power amplifiers, each set of power amplifiers comprising a plurality of channels of power amplifiers combined by a Wilkinson circuit; a combiner configured to combine signals from the plurality of sets of power amplifiers and to connect the plurality of sets of power amplifiers to the body coil; a first switching device comprising a first terminal configured to be grounded; a second switching device connected in series in a resistor branch of the Wilkinson circuit; and a ¼ wavelength transformation transmission line located between the second switching device and the head coil, the method comprising: connecting the power amplifier component to the body coil or the head coil by setting states of both the first switching device and the second switching device.